ccna model exam question

7/18/2019 CCNA Model Exam Question

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CCNA Exam 200-120

Section 1

1. Which of the following statements is/are true with regard to the device shownbelow? (Choose all that apply.)

A. It includes one collision domain and one broadcast domainB. It includes one collision domain and 10 broadcast domains

C. It includes 10 collision domains and one broadcast domain

D. It includes one collision domain and 10 broadcast domains

E. It includes 10 collision domains and 10 broadcast domains.

2. With respect to the OSI model, which of the following are correct statements

about PDUs?A. A segment contains IP addresses.

B. A packet contains IP addresses.C. A segment contains MAC addresses.

D.A packet contains MAC addresses

3.You are the Cisco administrator for your company. A new branch office is opening

and you are selecting the necessary hardware to support the network. There will be two

groups of computers, each organized by department. The Sales group computers will

be assigned IP addresses ranging from 192.168.1.2 to 192.168.1.50. The Accounting

group will be assigned IP addresses ranging from 10.0.0.2 to 10.0.0.50. What type ofdevice should you select to connect the two groups of computers so that data commu-

nication can occur?

A. Hub

B. Switch

C. Router

D. Bridge

4. The most effective way to mitigate congestion on a LAN would be to ?A.

Upgrade the network cardsB. Change the cabling to CAT 6C. Replace the hubs with switchesD. Upgrade the CPUs in the routers



5. You need to provide network connectivity to 150 client computers that will reside in

the same sub network, and each client computer must be allocated dedicated band-

width. Which device should you use to accomplish the task?

A. Hub

B. SwitchC. Router

D. Bridge

6. Which of the following is an example of a routed protocol?

A. EIGRP

B. IP

C. OSPF

D. BGP

7. Which of the following is NOT a function carried out on the Application layer of theOSI model?

A. email

B. data translation and code formatting

C. file transfers

D. client/server processes

8. Which of the following layers of the OSI model was later subdivided into two

layers?A. Presentation

B. Transport

C. Data Link

D. Physical

9. An example of a device that operates on the physical layer is a .

A. Hub

B. Switch

C. Router

D. Bridge

10.Which of the following is NOT a benefit of using a reference model?

A. divides the network communication process into smaller and simpler

components

B. encourages industry standardization

C. enforces consistency across vendors

D. allows various types of network hardware and software to communicate



11.Which of the following statements is not true with regard to routers?

A. They forward broadcasts by default

B. They can filter the network based on Network layer information

C. They perform path selection

D. They perform packet switching

12.Switches break up _______ domains and routers break up ___

domains.

A. broadcast, broadcast

B. collision, collision

C. collision, broadcastD. broadcast, collision

13. How many collision domains are present in the diagram below?



A. eight

B. nineC. ten

D. eleven

15. Which of the following layers of the OSI model is not involved in defining how theapplications within the end stations will communicate with each other as well as with

users?A. TransportB. Application

C. Presentation

D. Session

16.Which if the following is the ONLY device that operates at all layers of the OSI

model?

A. Network host

B. Switch

C. Router

D. Bridge

14. How many collision domains are present in thediagram below?



Section 2

1. On a VLSM network, which mask should you use on point-to-point WAN links inorder to reduce the waste of IP addresses?

A./27B. /28

C. /29

D. /30

E. /31

2. In the diagram below, in order to have as efficient IP addressing as possible, whichnetwork should use a /29 mask?

A. A

B. B

C. C

D. D

3. To use VLSM, what capability must the routing protocols in use possess?

A.Support for multicast

B. Multiprotocol support

C. Transmission of subnet mask information

D. Support for unequal load balancing



4. If Host A is configured with an incorrect default gateway and all other computersand the router are known to be configured correctly, which of the following statementsis TRUE?

A. Host A cannot communicate with the router.

B. Host A can communicate with other hosts in the same subnet.

C.Host A can communicate with hosts in other subnets.

D. Host A can communicate with no other systems.

5. Which of the following troubleshooting steps, if completed successfully, alsoconfirmsthe other steps will succeed as well?

A. ping a remote computer

B. ping the loopback address

C. ping the NIC

D. ping the default gateway

6. When a ping to the local host IP address fails, what can you assume?

A. The IP address of the local host is incorrect.

B. The IP address of the remote host is incorrect.

C. The NIC is not functional.

D. The IP stack has failed to initialize.

7. When a ping to the local host IP address succeeds but a ping to the default gatewayIP address fails, what can you rule out? (Choose all that apply.)

A. The IP address of the local host is incorrect.

B.The IP address of the gateway is incorrect.

C. The NIC is not functional.

D. The IP stack has failed to initialize.

8.When you issue the ping command, what protocol are you using?A. DNS

B. DHCP

C. ARP

D. ICMP

9.What network service is the most likely problem if you can ping a computer by IPaddress but not by name?

A. DNS

B. DHCP

C. ARPD. ICMP



10.Which of the following commands displays the networks traversed on a path to anetwork destination?

A. ping

B. traceroute

C. pingroute

D. pathroute

11.What command generated the output shown below?

Reply from 172.16.10.2: bytes=32 time<1ms TTL=128Reply from 172.16.10.2: bytes=32 time<1ms TTL=128Reply from 172.16.10.2: bytes=32 time<1ms TTL=128Reply from 172.16.10.2: bytes=32 time<1ms TTL=128

A. traceroute

B. show ip route

C. ping

D. pathping

12. Which of the following network addresses correctly summarizes the three networksshown below efficiently?

10.0.0.0/16

10.1.0.0/16

10.2.0.0/16

A. 10.0.0.0/15

B. 10.1.0.0/8

C. 10.0.0.0/14

D.10.0.0.8/16

13.What command displays the ARP table on a Cisco router?

A. show ip arp

B. traceroute

C. arp -a

D. tracert

14.What switch must be added to the ipconfig command on a PC to verify DNSconfiguration?

A. /dnsB. -dns

C. /all

D. showall



15.Which of the following is the best summarization of the following networks:192.168.128.0 through 192.168.159.0

A. 192.168.0.0/24

B. 192.168.128.0/16

C. 192.168.128.0/19

D. 192.168.128.0/20



Section 3

1. What is the maximum number of IP addresses that can be assigned to hosts on a localsubnet that uses the 255.255.255.224 subnet mask?

A. 14

B. 15

C. 16

D. 30

E. 31

F. 62

2. You have a network that needs 29 subnets while maximizing the number of hostaddresses available on each subnet. How many bits must you borrow from the hostfield to provide the correct subnet mask?

A. 2

B. 3

C. 4

D. 5

E. 6

F. 7

3. What is the subnetwork address for a host with the IP address 200.10.5.68/28?

A. 200.10.5.56

B. 200.10.5.32

C. 200.10.5.64

D.200.10.5.0



4. The network address of 172.16.0.0/19 provides how many subnets and hosts?

A. 7 subnets, 30 hosts each

B. 7 subnets, 2,046 hosts each

C. 7 subnets, 8,190 hosts eachD. 8 subnets, 30 hosts each

E. 8 subnets, 2,046 hosts each

F. 8 subnets, 8,190 hosts each

5. Which two statements describe the IP address 10.16.3.65/23? (Choose two.)

A. The subnet address is 10.16.3.0 255.255.254.0.

B. The lowest host address in the subnet is 10.16.2.1 255.255.254.0.

C. The last valid host address in the subnet is 10.16.2.254 255.255.254.0.

D. The broadcast address of the subnet is 10.16.3.255 255.255.254.0.

E.The network is not subnetted.

6. If a host on a network has the address 172.16.45.14/30, what is the subnetwork thishost belongs to?

A. 172.16.45.0

B. 172.16.45.4

C. 172.16.45.8

D. 172.16.45.12

E. 172.16.45.16

7. Which mask should you use on point-to-point WAN links in order to reduce thewaste of IP addresses?

A. /27B. /28

C. /29

D. /30

E. /31

8. What is the subnetwork number of a host with an IP address of 172.16.66.0/21?

A. 172.16.36.0

B. 172.16.48.0C. 172.16.64.0

D. 172.16.0.0



9. You have an interface on a router with the IP address of 192.168.192.10/29. Includingthe router interface, how many hosts can have IP addresses on the LAN attached tothe router interface?

A.6

B.8

C.30

D.62

E. 126

10.You need to configure a server that is on the subnet 192.168.19.24/29. The router hasthe first available host address. Which of the following should you assign to theserver?

A. 192.168.19.0 255.255.255.0

B. 192.168.19.33 255.255.255.240

C. 192.168.19.26 255.255.255.248

D.

192.168.19.31 255.255.255.248E. 192.168.19.34 255.255.255.240

11.You have an interface on a router with the IP address of 192.168.192.10/29. What isthe broadcast address the hosts will use on this LAN?

A. 192.168.192.15B. 192.168.192.31

C. 192.168.192.63

D. 192.168.192.127

E. 192.168.192.255

12.You need to subnet a network that has 5 subnets, each with at least 16 hosts. Whichclassful subnet mask would you use?

A.255.255.255.192

B.255.255.255.224

C.255.255.255.240

D.255.255.255.248

13.You configure a router interface with the IP address 192.168.10.62 255.255.255.192and receive the following error:

Bad mask /26 for address 192.168.10.62

Why did you receive this error?

A. You typed this mask on a WAN link and that is not allowed.

B. This is not a valid host and subnet mask combination.

C. ip subnet-zero is not enabled on the router.

D. The router does not support IP.



14.If an Ethernet port on a router were assigned an IP address of 172.16.112.1/25, whatwould be the valid subnet address of this interface?A. 172.16.112.0

B. 172.16.0.0

C. 172.16.96.0

D. 172.16.255.0E. 172.16.128.0

15. Using the following illustration, what would be the IP address of E0 if you were

using the eighth subnet? The network ID is 192.168.10.0/28 and you need to use the last

available IP address in the range. The zero subnet should not be considered valid for

this question.

A. 192.168.10.142

B. 192.168.10.66

C. 192.168.100.254

D. 192.168.10.143

E. 192.168.10.126

16. Using the illustration from the previous question, what would be the IP address of

S0 if you were using the first subnet? The network ID is 192.168.10.0/28 and you needto use the last available IP address in the range. Again, the zero subnet should not becon- sidered valid for this question.

A. 192.168.10.24

B. 192.168.10.62

C. 192.168.10.30

D. 192.168.10.127



17.Which configuration command must be in effect to allow the use of 8 subnets if theClass C subnet mask is 255.255.255.224?A. Router(config)#ip classless

B. Router(config)#ip version 6

C. Router(config)#no ip classful

D. Router(config)#ip unnumberedE. Router(config)#ip subnet-zero

F. Router(config)#ip all-nets

18. You have a network with a subnet of 172.16.17.0/22. Which is the valid host

address?

A. 172.16.17.1 255.255.255.252

B. 172.16.0.1 255.255.240.0

C. 172.16.20.1 255.255.254.0

D. 172.16.16.1 255.255.255.240

E. 172.16.18.255 255.255.252.0F. 172.16.0.1 255.255.255.0

19. Your router has the following IP address on Ethernet0: 172.16.2.1/23. Which of thefollowing can be valid host IDs on the LAN interface attached to the router? (Choosetwo.)

A. 172.16.0.5B. 172.16.1.100

C. 172.16.1.198

D. 172.16.2.255

E. 172.16.3.0F. 172.16.3.255

20. To test the IP stack on your local host, which IP address would you ping?

A. 172.0.0.1

B. 1.0.0.127

C. 127.0.0.1

D. 127.255.255.255

E. 255.255.255.255



Section 4

1. What must happen if a DHCP IP conflict occurs?A. Proxy ARP will fix the issue.

B.The client uses a gratuitous ARP to fix the issue.

C. The administrator must fix the conflict by hand at the DHCP server.

D. The DHCP server will reassign new IP addresses to both computers.

2. Which of the following Application layer protocols sets up a secure session that'ssimilar to Telnet?

A. FTP

B. SSH

C. DNS

D. DHCP

3. Which of the following mechanisms is used by the client to avoid a duplicate IPaddressduring the DHCP process?

A. pingB. traceroute

C. gratuitous arp

D. pathping

4. What protocol is used to find the hardware address of a local device?

A. RARPB. ARPC. IP

D. ICMP

E. BootP

5. Which of the following are layers in the TCP/IP model? (Choose three.)

A. Application

B. Session

C. Transport

D. InternetE. Data Link

F. Physical



6. Which class of IP address provides a maximum of only 254 host addresses pernetwork ID?

A. Class A

B. Class B

C. Class C

D. Class DE. Class E

7. Which of the following describe the DHCP Discover message? (Choose two.)

A. It uses FF:FF:FF:FF:FF:FF as a layer 2 broadcast.

B. It uses UDP as the Transport layer protocol.

C. It uses TCP as the Transport layer protocol.

D. It does not use a layer 2 destination address.

8. Which layer 4 protocol is used for a Telnet connection?A. IP

B. TCP

C. TCP/IP

D. UDP

E. ICMP

9. Private IP addressing was specified in RFC ____________

10. Which of the following services use TCP? (Choose three.)A. DHCP

B. SMTP

C. SNMP

D. FTP

E. HTTP

F. TFTP

=

11. Which Class of IP addresses uses the pattern shown below?

Network Network Network Host

A. Class AB. Class B

C. Class C

D. Class D



12.Which of the following is an example of a multicast address?

A. 10.6.9.1

B. 192.168.10.6

C. 224.0.0.10

D. 172.16.9.5

13. If you use either Telnet or FTP, what layer are you using to generate the data?A. Application

B. Presentation

C. Session

D. Transport

14.The DoD model (also called the TCP/IP stack) has four layers. Which layer of theDoD model is equivalent to the Network layer of the OSI model?

A. Application

B. Host-to-Host

C. Internet

D. Network Access

15.Which two of the following are private IP addresses?

A. 12.0.0.1

B. 168.172.19.39

C. 172.20.14.36

D. 172.33.194.30

E.192.168.24.43

16.What layer in the TCP/IP stack is equivalent to the Transport layer of the OSImodel?

A. Application

B. Host-to-Host

C. Internet

D. Network Access

17.Which statements are true regarding ICMP packets? (Choose two).

A. ICMP guarantees datagram delivery.

B. ICMP can provide hosts with information about network problems.C. ICMP is encapsulated within IP datagrams.

D. ICMP is encapsulated within UDP datagrams.



18.What is the address range of a Class B network address in binary?A. 01xxxxxx

B. 0xxxxxxx

C. 10xxxxxx

D. 110xxxxx



Section 4

1. A network administrator issues the ping 192.168.2.5 command and successfully tests

connectivity to a host that has been newly connected to the network. Which protocols were used

during the test? (Choose two)

A. ARP

B. CDP

C. DHCP

D. DNS

E. ICMP

2. Refer to the exhibit. What command sequence will enable NAT from the inside to outside

network?

ip nat pool isp-net 1.2.4.10 1.2.4.240 netmask 255.255.255.0!

interface ethernet 1

description ISP Connectionip address 1.2.4.2 255.255.255.0

ip nat outside

!interface ethernet 0

description Ethernet to Firewall eth0

ip address 10.10.0.1 255.255.255.0

ip nat inside

!access-list 1 permit 10.0.0.0 0.255.255.255

A. (config)# ip nat pool isp-net 1.2.4.2 netmask 255.255.255.0 overload

B. (config-if)# ip nat outside overload

C. (config)# ip nat inside source list 1 interface ethernet1 overload

D. (config-if)# ip nat inside overload



3. Refer to the exhibit. A junior network engineer has prepared the exhibited configuration file.

What two statements are true of the planned configuration for interface fa0/1? (Choose two)

A. The two FastEthernet interfaces will require NAT configured on two outside serial interfaces.B. Address translation on fa0/1 is not required for DMZ Devices to access the Internet.

C. The fa0/1 IP address overlaps with the space used by s0/0.

D. The fa0/1 IP address is invalid for the IP subnet on which it resides.

E. Internet hosts may not initiate connections to DMZ Devices through the configuration that is

shown.

4. Which two benefits are provided by creating VLANs? (Choose two)

A. added security

B. dedicated bandwidth

C. provides segmentation

D. allows switches to route traffic between subinterfaces

E. contains collisions



5. Which command is used to configure a default route?

A. ip route 172.16.1.0 255.255.255.0 0.0.0.0

B. ip route 172.16.1.0 255.255.255.0 172.16.2.1

C. ip route 0.0.0.0 255.255.255.0 172.16.2.1

D. ip route 0.0.0.0 0.0.0.0 172.16.2.1

6. When troubleshooting a Frame Relay connection, what is the first step when performing a

loopback test?

A. Set the encapsulation of the interface to HDLC.

B. Place the CSU/DSU in local-loop mode.

C. Enable local-loop mode on the DCE Frame Relay router.

D. Verify that the encapsulation is set to Frame Relay.

7. Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco

routers?

A. Q933-A Annex A

B. IETF

C. ANSI Annex D

D. HDLC

8. Which two statements are true regarding EIGRP? (Choose two)

A – Passive routes are in the process of being calculated by DUAL

B – EIGRP supports VLSM, route summarization, and routing update authentication

C – EIGRP exchanges full routing table information with neighboring routers with every update

D – If the feasible successor has a higher advertised distance than the successor route, it becomes

the primary route

E – A query process is used to discover a replacement for a failed route if a feasible successor is

not identified from the current routing information

9. A network administrator is troubleshooting an EIGRP problem on a router and needs to

confirm the IP addresses of the devices with which the router has established adjacency. The

retransmit interval and the queue counts for the adjacent routers also need to be checked. What

command will display the required information?



A. Router# show ip eigrp adjacency

B. Router# show ip eigrp topology

C. Router#show ip eigrp interfaces

D. Router#show ip eigrp neighbors

10. Refer to the graphic. It has been decided that PC1 should be denied access to Server. Which

of the following commands are required to prevent only PC1 from accessing Server1 while

allowing all other traffic to flow normally? (Choose two)

A –

Router(config)# interface fa0/0Router(config-if)# ip access-group 101 outB – Router(config)# interface fa0/0

Router(config-if)# ip access-group 101 in

C – Router(config)# access-list 101 deny ip host 172.16.161.150 host 172.16.162.163

Router(config)# access-list 101 permit ip any anyD – Router(config)# access-list 101 deny ip 172.16.161.150 0.0.0.255 172.16.162.163 0.0.0.0

Router(config)# access-list 101 permit ip any any

11. A network administrator wants to add a line to an access list that will block only Telnet

access by the hosts on subnet 192.168.1.128/28 to the server at 192.168.1.5. What command

should be issued to accomplish this task?

A – access-list 101 deny tcp 192.168.1.128 0.0.0.15 192.168.1.5 0.0.0.0 eq 23

access-list 101 permit ip any any

B – access-list 101 deny tcp 192.168.1.128 0.0.0.240 192.168.1.5 0.0.0.0 eq 23


C – access-list 1 deny tcp 192.168.1.128 0.0.0.255 192.168.1.5 0.0.0.0 eq 21


D –

access-list 1 deny tcp 192.168.1.128 0.0.0.15 host 192.168.1.5 eq 23access-list 1 permit ip any any

12. The following access list below was applied outbound on the E0 interface connected to the

192.169.1.8/29 LAN:



access-list 135 deny tcp 192.169.1.8 0.0.0.7 eq 20 any

access-list 135 deny tcp 192.169.1.8 0.0.0.7 eq 21 any

How will the above access lists affect traffic?

A – FTP traffic from 192.169.1.22 will be denied

B –

No traffic, except for FTP traffic will be allowed to exit E0

C – FTP traffic from 192.169.1.9 to any host will be denied

D – All traffic exiting E0 will be denied

E – All FTP traffic to network 192.169.1.9/29 will be denied

13. Refer to the exhibit. What will happen to HTTP traffic coming from the Internet that is

destined for 172.16.12.10 if the traffic is processed by this ACL?

router#show access-listsExtended IP access list 110

10 deny tcp 172.16.0.0 0.0.255.255 any eq telnet

20 deny tcp 172.16.0.0 0.0.255.255 any eq smtp30 deny tcp 172.16.0.0 0.0.255.255 any eq http

40 permit tcp 172.16.0.0 0.0.255.255 any

A. Traffic will be dropped per line 30 of the ACL.

B. Traffic will be accepted per line 40 of the ACL.

C. Traffic will be dropped, because of the implicit deny all at the end of the ACL.

D. Traffic will be accepted, because the source address is not covered by the ACL.

14. In which solution is a router ACL used?

A. protecting a server from unauthorized access

B. controlling path selection, based on the route metric

C. reducing router CPU utilization

D. filtering packets that are passing through a router

15. If the subnet mask is 255.255.255.224, which of the following addresses can be assigned to

network hosts? (Choose three)

A – 15.234.118.63

B – 92.11.178.93

C – 134.178.18.56

D – 192.168.16.87



16. Which statement about access lists that are applied to an interface is true?

A. you can apply only one access list on any interface

B. you can configure one access list, per direction, per layer 3 protocol

C. you can place as many access lists as you want on any interface

D. you can configure one access list, per direction, per layer 2 protocol

17. The network administrator is asked to configure 113 point-to-point links. Which IP

addressing scheme best defines the address range and subnet mask that meet the requirement and

waste the fewest subnet and host addresses?

A. 10.10.0.0/18 subnetted with mask 255.255.255.252

B. 10.10.0.0/25 subnetted with mask 255.255.255.252

C. 10.10.0.0/24 subnetted with mask 255.255.255.252

D. 10.10.0.0/23 subnetted with mask 255.255.255.252

E. 10.10.0.0/16 subnetted with mask 255.255.255.252



Lab Question

18. Please use the following topology to complete this lab exercise:

Task 1:Configure the hostnames on routers R1 and R3 as illustrated in the topology.

Task 2:

Configure R1 S0/0 which is a DCE to provide a clock rate of 768Kbps to R3. Configure the IP

addresses on the Serial interfaces of R1 and R3 as illustrated in the topology. Configure a static

default route on R1 pointing to R3 over the Serial connection between the two routers. Also

configure a static default route on R3 pointing to R1 via the Serial connection between the two

routers. Configure the Loopback interfaces specified in the diagram on R1 and R3.

Task 3:

To test connectivity, ping R1 from R3 Serial0/0, Loopback10, Loopback20 and Loopback30

interfaces. To ping from the Loopback interfaces, use the ping <ip_address> source

<interface> command.

Task 4:

On R1, create a standard numbered ACL to prevent inbound traffic from the Loopback20 subnet

on R3, but explicitly allow all inbound traffic from Loopback10 and Loopback30 subnets on R3.

Apply this ACL inbound on Serial0/0. Now, try to ping R1 from R3 Serial0/0, Loopback10,

Loopback20, and Loopback30 using the ping <ip_address> source <interface>. If you have

configured this correctly, only Loopback10 and Loopback30 should still be able to ping.

ccna model exam question

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