CCNA 4 - Module 1 Exam Answers

1

Which of the following can be done to allow the users on the 10.0.0.0 network to communicate with the Web Server shown in the graphic? (Choose two.)
* Configure the Miami router to use NAT.
• Configure the Web Server with a private address.
* Configure the Miami router to use PAT.
• Change the Internet link IP address of 128.56.0.0 to a private address.
• Configure the Tampa router to use PAT.

2 What is the default number of pings issued by a DHCP server to a pool address before sending the DHCPOFFER to a client?
• one
* two
• three
• four
• five

3 What is the purpose of the DHCPDECLINE message?
• If the DHCP client received multiple DHCPOFFERs, it uses the DHCPDECLINE to refuse the offers it does not use.
• If the DHCP server sends an IP configuration update that the DHCP client does not need, it uses the DHCPDECLINE to refuse the information.
• The DHCP server uses the DHCPDECLINE message to refuse a DHCP client's request for IP configuration information.
* If the DHCP client detects that the address supplied by the DHCP server is in use on the network, it uses the DHCPDECLINE to refuse the offer.

4 Which configuration parameters are provided by the dynamic allocation process of DHCP? (Choose three.)
* Gateway address
* DNS server
• DHCP Server
* Subnet mask
• Key server
• ARP server

5

What is the purpose of the command marked with an arrow shown in the partial configuration output of a Cisco 806 broadband router?
• defines which addresses are allowed out of the router
• defines which addresses are allowed into the router
* defines which addresses can be translated
• defines which addresses are assigned to a NAT pool

6

Given the accompanying debug output from a Cisco router, what kind of address is 10.10.10.3 with the IP identification number of 29855?
* inside local
• inside global
• outside local
• outside global

7

Given the accompanying graphic, which statement would be applied to the S0 interface when configuring NAT on the Tampa router?
• ip nat inside
* ip nat outside
• ip pat inside
• ip pat outside

8

Given the accompanying graphic, which addresses could be assigned to traffic leaving S0 as a result of the statement ip nat pool Tampa 179.9.8.96 179.9.8.111 netmask 255.255.255.240? (Choose two.)
• 10.0.0.125
• 179.9.8.95
* 179.9.8.98
* 179.9.8.101
• 179.9.8.112

9

Refer to the exhibit. Which command would establish a group of 30 IP addresses that could be used to hide inside addresses from the Internet?
• ip nat pool Raleigh 10.0.0.32 10.0.0.63 netmask 255.255.255.224
• ip nat pool Raleigh 10.0.0.32 10.0.0.63 netmask 255.255.255.240
* ip nat pool Raleigh 171.11.10.32 171.11.10.63 netmask 255.255.255.224
• ip nat pool Raleigh 171.11.10.32 171.11.10.63 netmask 255.255.255.240

10

Given the accompanying diagram, which commands are necessary to implement PAT on the Raleigh router? (Choose four.)
* access-list 10 permit 192.168.10.0 0.0.0.255
• access-list 10 permit 171.11.0.0 0.0.255.255
• ip nat inside source static 192.168.10.1 171.11.0.0
* ip nat inside source list 10 interface S0 overload
* ip nat outside
* ip nat inside

11 What is true regarding the differences between NAT and PAT?
• PAT uses the word "overload" at the end of the access-list statement to share a single registered address.
• Static NAT allows an unregistered address to map to multiple registered addresses.
• Dynamic NAT allows hosts to receive the same global address each time external access is required.
* PAT uses unique source port numbers to distinguish between translations.

12 Which of the following are broadcasts sent by a client to a DHCP server? (Choose two.)
* DHCPDISCOVER
• DHCPRELEASE
• DHCPACK
* DHCPREQUEST
• DHCPOFFER

13 In addition to assigning addresses from predefined pools, which other services can a DHCP server offer? (Choose three.)
* DNS server addresses
* domain names
• global IP assignments
• NAT translations
* WINS server addresses

14 Users are complaining that they cannot attach to network resources. A technician has confirmed that clients are not properly receiving IP configuration information through the DHCP process. The network administrator wants to watch the DHCP process while the technician tries to release and renew addresses on the clients. Which command would the network administrator use to monitor the process of address allocation?
• show ip dhcp server statistics
• show ip dhcp binding
* debug ip dhcp server events
• debug ip dhcp binding

15

Refer to the graphic. Which command would allow the router to forward DHCP broadcasts from Host A to the DHCP server?
* ip helper-address
• dhcp helper-address
• dhcp relay-agent
• dhcp-relay

16 What is the default lease time for addresses assigned to clients through Easy IP?
* twenty-four hours
• forty-eight hours
• one week
• two weeks

17

The Raleigh router shown in the diagram is configured with PAT. Which of the following must be changed if the private network is migrated to a 10.0.0.0 network? (Choose two.)
* E0 interface address
• S0 interface address
* the access-list statement
• the NAT outside interface
• the NAT inside interface

18 A network administrator needs to configure a router to offer DHCP services. Assuming the router is operating with factory defaults and the IOS supports DHCP, what must be done to start the DHCP service?
• Use the global configuration command service dhcp.
• Use the privileged command service dhcp start.
• Use the start service dhcp command during the setup processes.
* Do nothing. The DHCP service is enabled by default during start up.

19 Which of the following traffic types are supported by Cisco IOS NAT? (Choose two.)
• Routing table updates
* ICMP
* FTP
• BOOTP
• SNMP

20 Which configuration information might a DHCPOFFER include? (Choose three.)
* IP address
* DNS server address
• DHCP binding
* Lease time
• DHCP database

21 A company was issued 207.48.12.8/29 as its registered address from its ISP. Which of the following is a solution that will allow Internet access to 300 employees simultaneously?
• VLSM to further subnet the registered address and create more IP addresses
• normal subnetting on the Class C network and address the host
* RFC 1918 and port address translation
• this is an impossible scenario because there are not enough addresses

Final Exam (versi 2)

Which cable diagram displays the end to end pinout for a console cable used with Cisco devices?
*Cable B

How many broadcast domains are shown in the diagram?
*three

Refer to the exhibit. What device does Device X represent in the graphic to allow PC1 to ping PC4?
*router

Refer to the exhibit. How many collision domains are present in the topology?
*6

What can be verified by successfully pinging the reserved loopback address on a host?
*The TCP/IP stack of the local host is installed correctly.

When using Category 5 UTP cable, which RJ-45 pin pairs are used to exchange data between hosts on an Ethernet network?
*1 and 2; 3 and 6

A collision has occurred on an Ethernet network. Which three statements explain the CSMA/CD process? (Choose three.)
*After the jam signal, all transmission stops for a random period.
*When the backoff period expires, each host checks to see whether the networking media is idle and then attempts to transmit.
*When the collision is detected, the hosts continue to transmit using a jam pattern for a short time to ensure that all hosts detect the collision.

A workstation is browsing a web server. What will be the partial contents of the segment sent from the workstation to the web server?
*source port 1026, destination port 80, sequence number 1, ack number 0

Which protocols are TCP/IP application layer protocols? (Choose two.)
*FTP
*SMTP

A company has the following addressing scheme requirements:-currently has 25 subnets-uses a Class B IP address-has a maximum of 300 computers on any network segment-needs to leave the fewest unused addresses in each subnetWhat subnet mask is appropriate to use in this company?
*255.255.254.

Refer to the exhibit. Host A has been added to the network. However, host A cannot communicate with the server B or the Internet. All cables have been tested and are functioning to standards. At which layer of the OSI model is this problem occurring?
*Layer 3

Refer to the exhibit. Workstation 1 pings the Fa0/1 interface of Router 1. Which MAC address will workstation 1 obtain during the ARP request for this communication?
*00-08-A3-B6-CE-02

When the receiving workstation detects an error in the data it has received, it does not acknowledge receipt of the data. The source workstation retransmits the unacknowledged data. Which layer of the OSI model supports this process of retransmission?
*transport

Which subnet masks would be valid for a subnetted Class B address? (Choose two.)*255.255.252.0
*255.255.255.192

A network user is using the FTP protocol to transfer data from the local host to an FTP server. The local host is also using the SNMP protocol to report the system status to the network management system. Which statement describes the communication from the host?
*FTP uses TCP to establish a session before any data is transferred.

A NIC of a computer has been assigned an IP address of 172.31.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
*172.31.192.160

Which devices segment collision domains? (Choose two.)
*switch
*router

Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between Host A and Host B?
*crossover cable

Refer to the exhibit. What must be configured on Host B to allow it to communicate with the Host C? (Choose three.)
*a unique host IP address
*the default gateway address
*the subnet mask for the LAN

Refer to the exhibit. The connections in the exhibit are labeled A through E. Which of these indicate WAN links? (Choose three.)
*link B
*link C
*link D

Refer to the exhibit. Which type of UTP cable should be used to connect Switch1 to Switch2?*crossover

A user initiates three simultaneous FTP connections from the local host to the same FTP server. Which OSI layer is responsible for establishing and managing these different FTP connections?*session

Which layer of the OSI model defines the process of adding the source and destination IP address to a data packet?
*network

Refer to the exhibit. What is the purpose of the highlighted address?
*It allows the NIC to communicate with other devices on the same network.

What is the correct number of usable subnetworks and hosts for the IP network address 192.168.99.0 subnetted with a /29 mask?
*30 networks / 6 hosts

Refer to the exhibit. Which type of cabling should be used at each of the connection points shown?*A-straight-through B-crossover C-straight-through D-fiber E-straight-through

Which combination of network id and subnet mask correctly identifies all IP addresses from 172.16.128.0 through 172.16.159.255?
*172.16.128.0 to 255.255.224.0

Which binary number is a representation of the decimal number 248?
*11111000

What are three characteristics of the TCP protocol? (Choose three.)
*forces the retransmission of unacknowledged packets
*creates a virtual session between end-user applications
*is responsible for breaking messages into segments and reassembling them at their destination.

Refer to the exhibit. A company needs to attach workstation E at a point 150 meters from an existing hub. What device should be placed at location D to allow the new host to connect to the network with the least amount of latency?
*repeater

Refer to the exhibit. An instructor in the network class has given the students the network diagram and asks the students to select the appropriate network devices. The goals are to provide a collision-free LAN environment and to provide Internet connectivity. What is the correct design?*Replace Box 1 with a Layer 2 switch and Box 2 with a router.

A simplified CAM table for Switch1 is shown in the exhibit. If host A sends a frame with a destination MAC address of 66C, how does the switch process this frame?
*The switch sends the frame out ports 2, 3, and 4.

Refer to the exhibit. A newly hired technician has a task of terminating CAT 5 UTP cables. The network administrator visually examined the cables the technician terminated. Some of the cables have connectors as shown in the exhibit. What should the network administrator explain to the technician about the cables?
*The cable in Graphic A will produce more crosstalk.

Which of the following increases the potential for a collision to occur?
*an increase in the number of devices attached to the hub

Which type of address is 223.168.17.167/29?
*multicast address

Refer to the exhibit. The internetwork in the exhibit has been assigned the IP address 172.20.0.0. What would be the appropriate subnet mask to maximize the number of networks available for future growth?
*255.255.252.0

Workstation A sends data to workstation B. What will have to be altered as the data passes through the router? (Choose two.)
*Layer 1 bit pattern
*Layer 2 frames

What should a network administrator consider when migrating to Gigabit Ethernet architecture from Fast Ethernet? (Choose three.)
*Existing NICs might need to be upgraded.
*Existing switches might need to be upgraded.
*Existing UTP must be tested for CAT 5e compatibility.

What type of routing is it when the network administrator manually configures a route?
*static

Refer to the exhibit. A network administrator attempts to increase the available bandwidth for workstation A by setting the NIC to full-duplex mode. After the configuration is changed, there are increased collisions and errors occurring. Why is this occurring in the network?
*The hub will be continually producing a jam signal.

Refer to the received frame in the exhibit. In what two ways is the information from the received frame used by a switch? (Choose two.)
*192.168.10.11 is left intact as the frame is forwarded.
*To make the forwarding decision, the switch looks in its switch table for address aaaa.bbbb.cccc.

An IT administrator desires to install a Gigabit Ethernet link between the two buildings shown in the exhibit. Conflicting suggestions have been given to the administrator from a variety of sources. Which suggestion should the administrator adopt to ensure the success of this project?
*A combination of UTP, repeaters, and multimode optical fiber will reach 900 meters with Gigabit Ethernet.

Refer to the exhibit. What is the order of the TCP/IP Protocol Data Units as data is moved as indicated through the OSI model?
*data, segments, packets, frames, bits

Which technologies are considered to be WAN technologies? (Choose two.)
*DSL
*Frame Relay

Which statement describes a star topology?
*Each host is connected to a hub or switch, either of which acts as a central point for all network connections.

Refer to the exhibit. A network administrator is testing a connectivity issue in the network. The administrator discovers that host A cannot communicate with host B, host C, or RouterA. A ping command on host A to 127.0.0.1 succeeds. The NIC link indicator on host A is illuminated. Temporarily, the administrator removes the cable from host A and uses the LAN cable from host B to connect from host A to port 1 on the switch. While using the substitute cable, host A can communicate with host C and RouterA. At which layer of the OSI model was the problem occurring?
*physical

Refer to the exhibit. What type of cable connects the two routers together without any intermediary device?
*crossover

Refer to the exhibit. What is an advantage of using this type of topology?
*Network communication continues in the event of a break.

Refer to the exhibit. Host A is being manually configured for connectivity to the LAN. Which two addressing scheme combinations are possible configurations that can be applied to the host for connectivity? (Choose two.)
*Address - 192.168.1.82 Gateway - 192.168.1.65
*Address - 192.168.1.70 Gateway - 192.168.1.65

Which of the following devices extend a collision domain? (Choose two.)
*hub
*repeater

A technician needs to connect a FastEthernet port from a router to a FastEthernet port on a switch. The graphic shows the RJ-45 cable ends for a patch cable. What result can be expected if this cable is used for the link?
*The cable will be able to pass traffic between the devices.

CCNA 1 - Module 11 Exam Answers

What three pieces of information does the transport layer use to manage the communication of separate data streams between hosts? (Choose three.)
port numbers
*checksum values
authentication keys
*sequence numbers
encryption algorithms
*acknowledgment numbers

Which protocol is used to transfer files from computer to computer but is considered connectionless?
FTP
*TFTP
SNMP
TCP
DHCP

FTP provides a reliable, connection-oriented service for transferring of files. Which transport layer protocol is used for data transfer when this service is being used?
TFTP
*TCP
DNS
IP
UDP

What are the features of the User Datagram Protocol (UDP). (Choose three.)
*no guaranteed delivery of datagrams
connection-oriented
provides reliable full-duplex data transmission
*reliability provided by the application layer
*connectionless
utilizes sliding windowing techniques

What does the http portion of the URL http://www.cisco.com/edu/ communicate to a web browser?
The web browser needs to locate the www server.
The address is located on a site whose name is http.
*The web browser is notified as to which protocol to use.
The http portion represents the type of web browser that needs to be used.

What is the purpose of TCP/UDP port numbers?
indicate the beginning of a three-way handshake
reassemble the segments into the correct order
identify the number of data packets that may be sent without acknowledgment
*track different conversations crossing the network at the same time

Which of the following are primary duties of the OSI transport layer?
(Choose two.)
path determination
*end-to-end connectivity
*flow control
security control
data representation
encryption of data

Which application layer protocol allows network devices to exchange management information?
SMTP
*SNMP
FTP
TFTP
EIGRP

When the receiving workstation detects an error in the data it has received, it does not acknowledge receipt of the data. The source workstation retransmits the unacknowledged data. Which layer of the OSI model supports this process of retransmission?
network
application
session
*transport

An application is using a protocol that exchanges data without using windowing or flow control and must rely on higher layer protocols to transmit data. Which protocol and transfer method are being used?
UDP, connection-oriented
*UDP, connectionless
TCP, connection-oriented
TCP, connectionless

Which port numbers are commonly assigned for FTP use? (Choose two.)
19
*20
*21
22

Which Application layer protocol is widely used to support resolving host names to IP addresses?
FTP
SMTP
SNMP
*DNS
HTTP
WWW

Which layer of the OSI model can provide a connection-oriented, reliable data transfer between two hosts?
Application
Presentation
Session
*Transport

TCP is referred to as connection-oriented. What does this mean?
TCP uses only LAN connections.
TCP requires devices to be directly connected.
*TCP negotiates a session for data transfer between hosts.
TCP reassembles the data steams in the order that it is received.

Which protocol is used by e-mail servers to communicate with each other?
FTP
HTTP
TFTP
*SMTP
POP
SNMP

CCNA 1 - Module 10 Exam Answers

How does subnetting provide some level of security in a network?
The number of switches must increase.
The collisions prevent the copying of data.
*The broadcasts are contained within a subnet.
The number of host IP addresses is increased.

Refer to the exhibit. The network administrator has assigned the internetwork of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 mask. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network. By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the IP server properties to get connectivity to the network through the router?
IP address: 192.168.10.38 Subnet mask: 255.255.255.240 Default gateway: 192.168.10.39
IP address: 192.168.10.38 Subnet mask: 255.255.255.240 Default gateway: 192.168.10.33
*IP address: 192.168.10.38 Subnet mask: 255.255.255.248 Default gateway: 192.168.10.33
IP address: 192.168.10.39 Subnet mask: 255.255.255.248 Default gateway: 192.168.10.31
IP address: 192.168.10.254 Subnet mask: 255.255.255.0 Default gateway: 192.168.10.1

Refer to the exhibit. A newly hired technician is testing the connectivity of all hosts by issuing a ping command. The technician notices that a default gateway is not configured on all the hosts, but all hosts have connectivity between hosts, a fact which seems to confuse the technician. How would you explain the connectivity to the technician?

The hosts are detecting the default gateway configured on the hub.
*The hosts are all in one LAN, so default gateway information is not needed.
The hosts in the network only require that one host has a gateway configured.
The hosts in the network would only need a gateway if a switch replaces the hub.
The hosts are using broadcast to reach each other since no gateway is configured.

What is the primary purpose of the routing process?

to propagate broadcast messages
to map IP addresses to MAC addresses
to switch traffic to all available interfaces
to map IP addresses to MAC addresses
*to find paths from one network or subnet to another

Refer to the exhibit. A technician is planning an addressing scheme for a branch office as shown in the exhibit. What is the status of the intended network?

The configuration will work as planned.
The subnetwork mask of host A is incorrect.
The default gateway of host A is a network address.
*The addresses on the router LAN interfaces are on the same subnetwork.
The IP address of host A is on a different subnetwork than the subnetwork that the Ethernet router interface is on.

A company is using a Class B IP addressing scheme and expects to need as many as 100 networks.
What is the correct subnet mask to use with the network configuration?

*255.255.0.0
255.255.240.0
255.255.254.0
255.255.255.0
255.255.255.128
255.255.255.192

Refer to the exhibit. Host A is connected to the LAN, but it cannot get access to any resources on the Internet. The configuration of the host is shown in the exhibit. What could be the cause of the problem?

*The host subnet mask is incorrect.
The default gateway is a network address.
The default gateway is a broadcast address.
The default gateway is on a different subnet from the host.

An IP network address has been subnetted so that every subnetwork has 14 usable host IP addresses. What is the appropriate subnet mask for the newly created subnetworks?

255.255.255.128
255.255.255.224
*255.255.255.240
255.255.255.248
255.255.255.252

Which type of routing uses manual entry of information and does not scale well in large internetworks?

interior
exterior
*static
dynamic

What header address information does a router change in the information it receives from an attached Ethernet interface before information is transmitted out another interface?

only the Layer 2 source address
only the Layer 2 destination address
only the Layer 3 source address
only the Layer 3 destination address
*the Layer 2 source and destination address
the Layer 3 source and destination address

Refer to the exhibit. A student in the Cisco network class has designed a small office network to enable hosts to access the Internet. What recommendation should the teacher provide to the student in regards to the network design?

Replace the Layer 2 switch with a hub.
*Replace the Layer 2 switch with a router.
Replace the Layer 2 switch with a bridge.
Replace the Layer 2 switch with a transceiver.

How does a router decide where the contents of a received frame should be forwarded?

*by matching destination IP addresses with networks in the routing table
by matching the destination IP address with IP addresses listed in the ARP table
by matching the destination MAC address with MAC addresses listed in the CAM table
by forwarding the frame to all interfaces except the interface on which the frame was received

What do switches and routers use to make forwarding decisions?

Switches and routers both use IP addresses.
Switches and routers use both MAC and IP addresses.
Switches use IP addresses. Routers use MAC addresses.
*Switches use MAC addresses. Routers use IP addresses.
Switches use MAC and IP addresses. Routers use IP addresses.

Company XYZ uses a network address of 192.168.4.0. It uses the mask of 255.255.255.224 to create subnets. What is the maximum number of usable hosts in each subnet?

6
14
*30
62

Refer to the exhibit. After host 2 is connected to the switch on the LAN, host 2 is unable to communicate with host 1. What is the cause of this problem?

The subnet mask of host 2 is incorrect.
*Host 1 and host 2 are on different networks.
The switch needs an IP address that is not configured.
The router LAN interface and host 1 are on different networks.
The IP address of host 1 is on a different network than is the LAN interface of the router.

Refer to the exhibit. Host A pings host B. When R4 accepts the ping into the Ethernet interface, what two pieces of header information are included? (Choose two.)

source IP address: 192.168.10.129
source IP address: BBBB.3333.5677
source MAC address: 5555.AAAA.6666
destination IP address: 192.168.10.33
*destination IP address: 192.168.10.134
*destination MAC address: 9999.DADC.1234

At which layer of the OSI model does the device reside that is functioning as the default gateway for hosts on a network?

Layer 1
Layer 2
*Layer 3
Layer 4
Layer 5
Layer 7

Given a host with the IP address 172.32.65.13 and a default subnet mask, to which network does the host belong?

172.32.65.0
172.32.65.32
*172.32.0.0
172.32.32.0

Which statements describe Layer 2 and Layer 3 packet address changes as the packet traverses from router to router? (Choose two.)

Layer 3 header is removed and replaced at every Layer 3 device.
Layer 2 and Layer 3 addresses do not change when the packet traverse.
*Layer 3 source and destination addresses do not change when the packet traverse.
*Layer 2 frame header and trailer are removed and replaced at every Layer 3 device.
Layer 2 source and destination addresses do not change when the packet travels.

Host A is connected to the LAN, but it cannot connect to the Internet. The host configuration is shown in the exhibit. What are the two problems with this configuration? (Choose two.)

*The host subnet mask is incorrect.
The host is not configured for subnetting.
The default gateway is a network address.
*The default gateway is on a different network than the host.
The host IP address is on a different network from the Serial interface of the router.

A company is planning to subnet its network for a maximum of 27 hosts. Which subnet mask would provide the needed hosts and leave the fewest unused addresses in each subnet?

255.255.255.0
255.255.255.192
*255.255.255.224
255.255.255.240
255.255.255.248

Which device would add security to a network by not forwarding broadcasts?

*hub
router
switch
bridge
repeater

What is the purpose of a subnet mask in a network?

A subnet mask is not necessary when a default gateway is specified.
A subnet mask is required only when bits are borrowed on a network.
*A subnet mask is used to determine in which subnet an IP address belongs.
A subnet mask is used to separate the 48-bit address into the OUI and the vendor serial number.

Which type of routing allows routers to adapt to network changes?

static routes
*dynamic routing
only default routes
No routing is necessary.

Refer to the exhibit. A network administrator is planning the addressing scheme for the LAN using 172.25.14.0/26. The hosts are to be assigned addresses 172.25.14.1 – 172.25.14.25. The LAN interface of the router is to be configured using 172.25.14.63 as the IP address. What would describe this addressing scheme?

The LAN is being addressed properly.
The subnet that is being assigned is not a usable subnet address.
*The router LAN interface is being assigned a broadcast address.
The subnet mask does not allow enough host addresses in a single subnet.

CCNA 1 - Module 9 Exam Answers

1. What is the primary responsibility of the transport layer?
• allows access to the network media
• provides data representation and encoding
• selects paths through the network for data to travel
* defines end-to-end connectivity between host applications

2. Why is IP considered a best-effort protocol?
• IP detects lost packets.
• IP validates the content of the packets.
* IP does not provide acknowledgment of the data delivery.
• IP reorders the packet as they arrive at the destination host.

3. Which two statements correctly describe the IP address 127.0.0.1? (Choose two.)
* It belongs to the Class A range of addresses.
• It belongs to the Class B range of addresses.
• It belongs to the Class C range of addresses.
* It is reserved for loopback testing.
• It is reserved for multicast group testing.
• It is reserved for unicast testing.

4.

Refer to the exhibit. Which two statements are correct in reference to the output shown? (Choose two.)
• The LAN segment is subnetted to allow 254 subnets.
• The DNS server for this host is on the same subnet as the host.
• The host automatically obtained the IP addresses 192.168.1.100.
* The host received the IP address from the router on the local LAN segment.
* The host is assigned an address of 00-50-8D-F1-EA-8D by the administrator.

5. Which three addresses are considered to be private addresses? (Choose three.)
* 10.45.09.23
• 15.87.234.87
• 172.32.45.90
* 172.17.78.98
• 192.169.89.56
* 192.168.45.23

6. What is the purpose of a DHCP server on a network?
• to resolve MAC addresses to IP addresses
• to resolve IP addresses to MAC addresses
• to resolve host names to IP addresses
* to assign IP addresses dynamically to hosts
• to assign a MAC address to a host

7.

Refer to the exhibit. The small office LAN shown in the exhibit may eventually be connected to the Internet. According to Cisco best practice, which IP network addresses should be used?
• 12.0.0.0
• 172.0.0.0
• 172.168.0.0
• 192.32.17.0
* 192.168.67.0
• 225.1.5.0

8.

Refer to the exhibit. Which devices are recommended to have the IP addresses manually configured?
• PC1 and PC2
* all servers
• only PC2 Laptop
• all hosts and all servers

9.

Refer to the exhibit. Based on the information shown, which two statements are true? (Choose two.)
• An ARP request must be used to obtain an address that is placed in the ARP table.
• Frames from other hosts in the network to this host will use a destination address of 00-06-25-25-6e-5d.
• The only remote locations that can be reached from this host are 192.168.1.97 and 192.168.1.254.
* If a packet is sent to a network device other than 192.168.1.97 and 192.168.1.254, an ARP request must be used.
* If the computer with the IP address of 192.168.1.94 sends a packet to the device with the IP address 192.168.1.97, no ARP request is required.

10. Which TCP/IP model layer supports both LAN and WAN technologies?
* network access layer
• internet layer
• transport layer
• application layer

11. Which subnet mask would be assigned to the network address of 192.168.32.0 to provide 254 useable host addresses per subnetwork?
• 255.255.0.0
* 255.255.255.0
• 255.255.254.0
• 255.255.248.0

12.

Refer to the exhibit. Host A pings host B. When R4 accepts the ping into the Ethernet interface, what two pieces of header information are included? (Choose two.)
• source IP address: 192.168.10.129
• source IP address: BBBB.3333.5677
• source MAC address: 5555.AAAA.6666
• destination IP address: 192.168.10.33
* destination IP address: 192.168.10.134
* destination MAC address: 9999.DADC.1234

13. What header address information does a router change in the information it receives from an attached Ethernet interface before information is transmitted out another interface?
• only the Layer 2 source address
• only the Layer 2 destination address
• only the Layer 3 source address
• only the Layer 3 destination address
* the Layer 2 source and destination address
• the Layer 3 source and destination address

14.

Host A is connected to the LAN, but it cannot connect to the Internet. The host configuration is shown in the exhibit. What are the two problems with this configuration? (Choose two.)
* The host subnet mask is incorrect.
• The host is not configured for subnetting.
• The default gateway is a network address.
* The default gateway is on a different network than the host.
• The host IP address is on a different network from the Serial interface of the router.

15. An IP network address has been subnetted so that every subnetwork has 14 usable host IP addresses. What is the appropriate subnet mask for the newly created subnetworks?
• 255.255.255.128
• 255.255.255.224
* 255.255.255.240
• 255.255.255.248
• 255.255.255.252

16. A company is using a Class B IP addressing scheme and expects to need as many as 100 networks. What is the correct subnet mask to use with the network configuration?
• 255.255.0.0
• 255.255.240.0
* 255.255.254.0
• 255.255.255.0
• 255.255.255.128
• 255.255.255.192

17.

Refer to the exhibit. The network administrator has assigned the internetwork of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 mask. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network. By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the IP server properties to get connectivity to the network through the router?
• IP address: 192.168.10.38 Subnet mask: 255.255.255.240 Default gateway: 192.168.10.39
• IP address: 192.168.10.38 Subnet mask: 255.255.255.240 Default gateway: 192.168.10.33
* IP address: 192.168.10.38 Subnet mask: 255.255.255.248 Default gateway: 192.168.10.33
• IP address: 192.168.10.39 Subnet mask: 255.255.255.248 Default gateway: 192.168.10.31
• IP address: 192.168.10.254 Subnet mask: 255.255.255.0 Default gateway: 192.168.10.1

18.

Refer to the exhibit. A technician is planning an addressing scheme for a branch office as shown in the exhibit. What is the status of the intended network?
• The configuration will work as planned.
• The subnetwork mask of host A is incorrect.
• The default gateway of host A is a network address.
* The addresses on the router LAN interfaces are on the same subnetwork.
• The IP address of host A is on a different subnetwork than the subnetwork that the Ethernet router interface is on.

19.

Refer to the exhibit. After host 2 is connected to the switch on the LAN, host 2 is unable to communicate with host 1. What is the cause of this problem?
• The subnet mask of host 2 is incorrect.
* Host 1 and host 2 are on different networks.
• The switch needs an IP address that is not configured.
• The router LAN interface and host 1 are on different networks.
• The IP address of host 1 is on a different network than is the LAN interface of the router.

20.

Refer to the exhibit. A network administrator is planning the addressing scheme for the LAN using 172.25.14.0/26. The hosts are to be assigned addresses 172.25.14.1 - 172.25.14.25. The LAN interface of the router is to be configured using 172.25.14.63 as the IP address. What would describe this addressing scheme?
• The LAN is being addressed properly.
• The subnet that is being assigned is not a usable subnet address.
* The router LAN interface is being assigned a broadcast address.
• The subnet mask does not allow enough host addresses in a single subnet.

21. Which type of routing allows routers to adapt to network changes?
• static routes
* dynamic routing
• only default routes
• No routing is necessary.

22. How does a router decide where the contents of a received frame should be forwarded?
* by matching destination IP addresses with networks in the routing table
• by matching the destination IP address with IP addresses listed in the ARP table
• by matching the destination MAC address with MAC addresses listed in the CAM table
• by forwarding the frame to all interfaces except the interface on which the frame was received

23. What do switches and routers use to make forwarding decisions?
• Switches and routers both use IP addresses.
• Switches and routers use both MAC and IP addresses.
• Switches use IP addresses. Routers use MAC addresses.
* Switches use MAC addresses. Routers use IP addresses.
• Switches use MAC and IP addresses. Routers use IP addresses.

24.

Refer to the exhibit. A newly hired technician is testing the connectivity of all hosts by issuing a ping command. The technician notices that a default gateway is not configured on all the hosts, but all hosts have connectivity between hosts, a fact which seems to confuse the technician. How would you explain the connectivity to the technician?
• The hosts are detecting the default gateway configured on the hub.
* The hosts are all in one LAN, so default gateway information is not needed.
• The hosts in the network only require that one host has a gateway configured.
• The hosts in the network would only need a gateway if a switch replaces the hub.
• The hosts are using broadcast to reach each other since no gateway is configured.

25. Given a host with the IP address 172.32.65.13 and a default subnet mask, to which network does the host belong?
• 172.32.65.0
• 172.32.65.32
* 172.32.0.0
• 172.32.32.0

CCNA 1 - Module 8 Exam Answers

What is characteristic of the operation of a Layer 2 switch?
*uses the destination MAC address to determine the specific interface to forward a frame

Two newly hired technicians are discussing the implementation of a new LAN. One technician proposes installing a hub. The other technician advises installing a switch. Which statements are true about the differences between a hub and a switch? (Choose two.)
*A switch provides more throughput to hosts on a LAN
*A switch provides a collision-free environment on a LAN.

Refer to the exhibit. Forty-eight workstations are connected to a hub. The users are able to connect to the network, but access is very slow. An entry-level technician replaces the 10 Mbps hub with 100 Mbps hub but the problem still exists. What is the most economical way to correct the problem?
*Replace the hub with a switch.

Exhibited is a portion of ABC Company internetwork. Which of the connections can be full duplex?
*segments 2, 3, and 4

Refer to the exhibit. The switch and the hub have default configurations, and the switch has built its CAM table. Which of the hosts will receive the data when workstation A sends a unicast packet to workstation C?
*workstation C

An administrator would like to connect ten workstations on a 192.168.0.0/24 network. The device selected by the administrator must allow connectivity between hosts without sharing bandwidth. Which device would be appropriate?
*switch

Which networking devices use the MAC address to make forwarding decisions? (Choose two.)
*bridge
*switch

Which devices are primarily used to extend cable segments within a collision domain by regenerating the data signals? (Choose two.)
*repeater
*hub

Which devices will create multiple collision domains in an Ethernet network? (Choose two.)
*switch

*router

Refer to the exhibit. How many broadcast domains exist in classroom 240?
*1

A PC receives a frame. Which situation will cause the NIC on the receiving host to pass the frame contents up the OSI layers to be processed by the PC?
*The destination MAC address of the frame is FFFF.FFFF.FFFF.

A network administrator has a multi-floor LAN to monitor and maintain. Through careful monitoring, the administrator has noticed a large amount of broadcast traffic slowing the network. Which device would you use to best solve this problem?
*router

What will a bridge do if it receives a frame with a MAC address that is not within the table?
*send frame to all ports except source port

Which networking device reduces the size of both collision domains and broadcast domains?
*router

What is used to prevent Layer 2 switching loops?
*Spanning-Tree Protocol

CCNA 1 - Module 7 Exam Answers

Which Ethernet standard does the IEEE 802.3 standard recommend for backbone installations?
*1000BASE-LX

Which statements describe Gigabit Ethernet technology? (Choose two.)
*typically used for backbone cabling
*can be implemented over copper and fiber

Which of the following are Fast Ethernet technologies? (Choose two.)
*100BASE-FX
*100BASE-TX

To make sure timing limitations are not violated when implementing a 10 Mbps Ethernet network involving hubs or repeaters, a technician should adhere to which rule?
*the 5-4-3 rule

At which OSI layer do the differences between standard Ethernet, Fast Ethernet and Gigabit Ethernet occur?
*physical layer

How does 1000BASE-T use the UTP wire pairs to accomplish transmission?
*all four pairs are used in parallel by both hosts to transmit and receive simultaneously

What RJ-45 pins are unused when transmitting and receiving data in an Ethernet 100BASE-T Category 5 UTP cable? (Choose two.)
*4 and 5
*7 and 8

What is the maximum distance that 10BASE-T will transmit data before signal attenuation affects the data delivery?
*100 meters

Which media types can be used in an implementation of a 10BASE-T network? (Choose three.)
*Category 5 UTP
*Category 5e UTP
*Category 3 UTP

Which of the following Ethernet technologies are considered legacy Ethernet? (Choose three.)
*10BASE2
*10BASE5
*10BASE-T

Which RJ-45 pins are used to transmit and receive data in an Ethernet 100BASE-TX Category 5 UTP cable? (Choose two.)
*1 and 2
*3 and 6