CCNA Discovery 4 Module 8 Exam Answers Version 4.0

1. Which mechanism is used to create a floating static route?
• administrative distance
• cost
• hop count
• passive interface

2. IPSec operates at which layer of the OSI model?
• application
• network
• datalink
• transport

3. Which is true regarding Frame Relay LMI?
• There are three LMI types standardized by ANSI, ITU-T, and Cisco.
• Routers at each end of a Frame Relay virtual circuit must always use the same LMI type.
• The LMI type must be manually configured.
• The only function of LMI is to verify the connection between the router and the Frame Relay switch.

4. Which statement identifies the IP address design for subinterfaces that are configured for a Frame Relay network?
• Multipoint configurations require the IP address of each subinterface on each router to be in its own subnet.
• Multipoint configurations require IP addresses for each subinterface on each router to be a part of the same subnet.
• Point-to-point configurations require IP addresses for each subinterface on each router to be a part of the same subnet.
• Point-to-point configurations do not require IP addresses on each subinterface on each router.
• Multipoint configurations do not require IP addresses on each subinterface on each router.

5. Which three algorithms can be used to encrypt user data in an IPSec VPN framework? (Choose three.)
• 3DES
• AES
• Diffie-Hellman
• DES
• ESP
• SHA

6. Which flag is set by a Frame Relay switch to inform the receiving station that congestion was experienced?
• BECN
• DE
• FECN
• FCS

7. Refer to the exhibit. The complete configuration of a Frame Relay interface on the Chicago router is shown. How does the Chicago router know which DLCI is mapped to the IP address of the remote router?
• DE
• CIR
• FECN
• Inverse ARP

8. What statement correctly defines the purpose of the split horizon rule?
• marks the route unreachable in a routing update that is sent to other routers
• prevents routers from advertising a network through the interface from which the update came
• prevents routers from accepting higher cost routes to networks previously marked as inaccessible before the timer expires
• limits the number of hops a packet can traverse through the network before it should be discarded

9. Which PVC status suggests that the router recognizes the DLCI configured on its interface as being present on the Frame Relay switch, but the PVC associated with the DLCI is not capable of end-to-end communication?
• active
• deleted
• inactive
• idle

10. Refer to the exhibit. Which router command is used to associate a Layer 2 address with the corresponding Layer 3 address?
• Miller(config-if)#frame-relay map ip 172.16.150.1 110
• Miller(config-if)#frame-relay map ip 172.16.150.1 112
• Miller(config-if)#frame-relay map ip 172.16.150.2 110
• Miller(config-if)#frame-relay map ip 172.16.150.2 112

11. A network administrator issued the command show frame-relay pvc. The response from the router shows the status of a PVC as deleted. What is the reason for this status?
• The DLCI is using the wrong LMI type.
• The DLCI is usable but has little activity.
• The DLCI is programmed in the switch but the circuit is not usable.
• The DLCI configured on the CPE device does not match the DLCI.

12. What is one benefit of using a network simulation software package?
• The network design can be tested before it is actually implemented.
• Simulation software packages are quickly updated to support new network technologies and devices.
• Simulated devices have the same features as actual devices, allowing for detection of all potential problems.
• Software packages can simulate all possible network traffic conditions, giving an accurate prediction of network performance.

13. What are two components a network designer considers when planning a VPN? (Choose two.)
• encryption algorithm for privacy and security
• encapsulation protocol to use when creating the VPN tunnel
• switching technology to optimize VPN WAN throughput
• tunneling technology for guarding against data corruption
• routing protocol on the gateway for optimum performance

14. When identifying VPN requirements for endpoint users, what care must be taken to protect the network when remote users log in from unsecured public locations?
• Ensure that the user has VPN client software that allows access to all internal resources.
• Ensure that the VPN user traffic does not slow down internally sourced traffic on the network.
• Ensure that there are no obstacles to hamper the users from accessing all internal resources.
• Ensure that remote users can only access network resources that are appropriate to their job function. 
15. Which two components are key elements when implementing a VPN? (Choose two.)
• concentration
• encryption
• prioritization
• compression
• encapsulation

16. What tool can help ease the configuration of VPN servers on routers?
• Cisco SDM
• PIX Firewall
• Cisco VPN Concentrator
• Cisco Adaptive Security Appliances

17. What is used to identify the path to the next frame-relay switch in a Frame Relay network?
• CIR
• DLCI
• FECN
• BECN

18. Which two statements are true regarding VPN security? (Choose two.)
• Users may only establish a VPN connection from secure locations and never from public areas.
• Users that connect to a network through a VPN do not have to log in to resources on the network.
• Users that connect to a network through a VPN are are considered trusted users on the network.
• Users may establish a VPN connection from unsecure locations such as airports and hotel lobbies.
• Users that connect to a network through a VPN should have access to all the resources on the network.

19. Refer to the exhibit. What is placed in the address field of a frame that will travel from the Orlando office to the DC office?
• MAC address of the Orlando router
• MAC address of the DC router
• 192.168.1.25
• 192.168.1.26
• DLCI 100
• DLCI 200

20. Two directly connected routers are able to ping each other through the Serial 0/0/0 interfaces. A network administrator changes the encapsulation on one router to PPP, and the other is left at the default value. What statement would appear in the output of the show interfaces command issued on one of the routers?
• Serial 0/0/0 is up, line protocol is up
• Serial 0/0/0 is down, line protocol is down
• Serial 0/0/0 is up, line protocol is down
• Serial 0/0/0 is down, line protocol is up
• Serial 0/0/0 is administratively down, line protocol is down

21. Refer to the exhibit. What statement is true about the configuration shown for R2?
• R2 is configured as the Frame Relay switch.
• R2 is configured as the main site in a multipoint Frame Relay WAN prototype.
• R2 is configured as the main site in a point-to-point Frame Relay WAN prototype.
• R2 is configured as a remote site in a multipoint Frame Relay WAN prototype.
• R2 is configured as a remote site in a point-to-point Frame Relay WAN prototype.

22. A company uses serial interfaces on its border router to connect to branch offices through WAN connections. The security policy dictates that the encapsulation should use PPP with authentication protocol CHAP. Which statement is true about the configuration requirement of CHAP?
• Both the username and password are case sensitive.
• Neither the username nor the password is case sensitive.
• The username is case sensitive but the password is not case sensitive.
• The password is case sensitive but the username is not case sensitive.

23. Which two statements about split tunnels are true? (Choose two.)
• Local LAN printing will use the VPN tunnel.
• The traffic load on the VPN server is increased.
• Traffic to the corporate network will be encrypted.
• There is a reduced security risk to the corporate network.
• All traffic travels across the VPN tunnel from client to server.
• Traffic to public web sites and general Internet navigation is not encrypted.

24. An IP address has been assigned to the S0/0/0 interface of a new Cisco router. The administrator wishes to quickly test basic connectivity with the serial interface of an adjoining Cisco router via the use of the default WAN protocol. Which WAN protocol will be used for this test?
• PPP
• Frame Relay
• DSL
• HDLC
• ATM

25. Which two statements about split tunnels are true? (Choose two.)
• Local LAN printing will use the VPN tunnel.
• The traffic load on the VPN server is increased.
• Traffic to the corporate network will be encrypted.
• There is a reduced security risk to the corporate network.
• All traffic travels across the VPN tunnel from client to server.
• Traffic to public web sites and general Internet navigation is not encrypted.

CCNA Discovery 4 Module 6 Exam Answers Version 4.0

1A network engineer researched whether there are mechanisms available to help with the
transition from an IPv4 addressing structure to IPv6. What three options did the engineer find?(Choose three.)

a.A protocol translation mechanism allows communication between the IPv4 and IPv6 networks.

b.A packet analyzer determines the addressing structure and converts it to the appropriate IPv4 or IPv6 scheme.

c. New Core devices that support IPV6 must be purchased.

d. A protocol converter changes IPv4 packets into IPv6 packets and vice versa.

e.A dual-stack network design allows both IPv4 and IPv6 addressing to be used on all network devices.

f.Tunneling allows IPv4 packets to be encapsulated so that they can traverse IPv6
networks and vice versa.


2
When should the command no auto-summary be used?

a.with RIP version 1, to enable classless routing

b.with RIP version 2, to enable classless routing

c. with RIP version 1, when discontigous networks exist

d. with RIP version 2, when discontigous networks exist


3
Refer to the exhibit. What must an administrator do on R3 to ensure that update packets are sent
with subnet mask information?

a.Add the commands:
R3(config-router)# auto-summary
R3(config-router)# no version 2

b.Add the commands:
R3(config-router)# version 2
R3(config-router)# no auto-summary

c.Change the network statement on R3:
R3(config)# network 10.10.4.0

d.Add the command:
R3(config)# ip route 0.0.0.0 0.0.0.0 s0/0


4
What best describes a discontiguous network?

a. combines several classfull networking address

b. contains more than one route to a destination

c. implements more than one routing protocol

d. separated from the rest of the hierarchical group by another network


5
Refer to the exhibit. A company has decided to add a new workgroup. If the subnetting scheme
for the network uses contiguous blocks of addresses, what subnet is assigned to WGROUP3?

a. 172.16.3.12/29

b. 172.16.3.16/29
c. 172.16.3.20/29

d. 172.16.3.24/29

e. 172.16.3.32/29


6
A network administrator is using the 10.0.0.0/8 network for the company. The administrator must
create a masking scheme to support 750 users at the main office and 620 users at the remote
office. What mask should be assigned to the 10.0.0.0/8 network to preserve the most addresses?

a. 255.255.255.0

b. /19

c. /20

d. 255.255.252.0

e. /23

f. /21


7
What is another format for the IPv6 address 1080:0000:0000:0000:0000:0000:1267:01A2?

a. 1080::1267:01A2

b. 1080:0:0:0:0:1267:01A2

c. 1080::0:1267:01A2

d. 1080:::::1267.01A2


8
How many bits make up an IPv6 address?

a. 32

b. 48

c. 64

d. 128


9
After activating IPv6 traffic forwarding, configuring IPv6 addresses, and globally configure RIPng,
what is the remaining step to activate RIPng?

a. Enter the ipv6 router rip name command and then use network statements to activate RIPng on the interfaces.


b. Enter the ipv6 router rip name command and then specify which interfaces run RIPng,
which are passive, and which only receive.

c. Enter the interface mode for each IPv6 interface and enable RIPng with the ipv6 rip name enable command.

d. Enter the interface mode for each IPv6 interface and enable the multicast group FF02::9,
and then activate RIPng globally using the ipv6 router rip name command.

e. Enter the router rip command, and then activate RIPng using the version command.

f. RIPng then automatically runs on all IPv6 interfaces.


10
Refer to the exhibit. The IT management has determined that the new subnet for WGROUP3
needs to be broken down into four more subnets. What would the subnet mask be for the four
newly created subnets within WGROUP3?

a. 255.255.128.0

b. 255.255.192.0

c. 255.255.224.0

d. 255.255.248.0

e. 255.255.252.0


11
Refer to the exhibit. What is the first usable IP address that can be assigned to the WGROUP3
switch?

a. 172.16.50.96/27

b. 172.16.50.97/27

c. 172.16.50.98/27

d. 172.16.50.99/27

e. 255.255.255.0


12
Refer to the exhibit. Which set of router commands is required to turn on unequal-cost load
sharing so that RTRA selects the path A-B-E and the lowest cost path A-C-E to the Internet?

a. RTRA(config)# router eigrp 1
RTRA(config-router)# variance 2

b. RTRA(config)# router eigrp 1
RTRA(config-router)# variance 1

c. RTRA(config)# router eigrp 1
RTRA(config-router)# maximum-paths 2

d. RTRA(config)# router eigrp 1
RTRA(config-router)# maximum-paths 1


13
Refer to the exhibit. Assuming that the default EIGRP configuration is running on both routers,
which statement is true about Router A reaching the 2.2.2.0/24 network?

a. The no auto-summary command needs to be issued to disable automatic summarization.

b. The network 2.2.2.0 command needs to be issued to ensure that Router A recognizes the 2.2.2.0 network.

c. EIGRP supports VLSM and automatically recognizes the 2.2.2.0 network.

d. EIGRP does not support VLSM; therefore it cannot be used with discontiguous networks.


14
Refer to the exhibit. The network administrator wants router RTA to send only the summarized
route of 10.10.0.0/16 to RTC. Which configuration accomplishes this?

a. RTA(config)# interface s0/0
RTA(config-if)# ip summary-address eigrp 101 10.10.0.0 255.255.0.0
RTA(config-if)# exit
RTA(config)# router eigrp 101
RTA(config-router)# no auto-summary

b. RTA(config)# interface s0/1
RTA(config-if)# ip summary-address eigrp 101 10.10.0.0 255.255.0.0
RTA(config-if)# exit
RTA(config)# router eigrp 101
RTA(config-router)# no auto-summary

c. RTA(config)# interface s0/0
RTA(config-if)# ip summary-address eigrp 101 10.10.0.0 255.255.0.0

d. RTA(config)# interface s0/1
RTA(config-if)# ip summary-address eigrp 101 10.10.0.0 255.255.0.0


15
What is a good design practice when developing a hierarchical addressing scheme?

a. Address the nodes in the Access Layer and work toward the Core Layer.

b. Assign addresses to the Core devices before planning the addressing scheme for the server farm.

c. Determine where statically configured addressing will be implemented.

d. Determine what percentage of devices are wired and what percentage of devices are wireless.


16
A network administrator is asked to design a new addressing scheme for a corporate network.
Presently, there are 850 users at the head office, 220 users at sales, 425 at manufacturing, and
50 at the research site. Which statement defines the correct VLSM addressing map with minimal
waste using the 172.17.0.0/16 network?

a. 172.17.0.0/20 head office
172.17.1.0/21 manufacturing
172.17.1.0/22 sales
172.17.3.0/26 research

b. 172.17.48.0/19 head office
172.17.16.0/20 manufacturing
172.17.48.128/25 sales
172.17.48.0/26 research

c. 172.17.0.0/22 head office
172.17.4.0/23 manufacturing
172.17.5.0/24 sales
172.17.6.0/26 research

d. 172.17.2.0/22 head office
172.17.3.0/23 manufacturing
172.17.4.0/26 sales
172.17.4.128/25 research


16
How would the routes for networks 172.16.1.0/24, 172.16.3.0/24, and 172.16.15.0/24 be summarized?

a. 172.16.0.0/20

b. 172.16.0.0/21

c. 172.16.0.0/22

d. 172.16.0.0/24


17
What two advantages does CIDR provide to a network? (Choose two.)

a. dynamic address assignment

b. automatic route redistribution

c. reduced routing update traffic

d. easier management of summarization
e. automatic summarization at classfull boundaries


18
Which statement describes MD5 authentication for neighbor authentication?

a. All passwords are sent in clear text when neighbors first learn about each other.

b. Only the initiating router sends its password using encrypted text when it first discovers a new router.

c. All routers send their password using encrypted text only when they first learn of each other.

d. All routers send their password using encrypted text each time they exchange update packets.


19
Refer to the exhibit. What are the broadcast addresses for each subnet?

a. Admin - 172.16.31.0
QA - 172.16.1.127
Development - 172.16.2.255
Sales - 172.16.32.255

b. Admin - 172.16.31.255
QA - 172.16.1.255
Development - 172.16.3.255
Sales - 172.16.63.255

c. Admin - 172.16.31.255
QA - 172.16.1.127
Development - 172.16.3.255
Sales - 172.16.63.255

d. Admin - 172.16.31.0
QA - 172.16.1.255
Development - 172.16.2.255
Sales - 172.16.32.255


20
Refer to the exhibit. The IT management is adding three VLANs to the wgroup3 switch.
The current subnet will be broken down to support 14 hosts for each of the new VLANs.
What will the new subnet mask be for these VLANs?

a. 255.255.255.192

b. 255.255.255.240

c. 255.255.248.0

d. 255.255.255.224

e. 255.255.240.0

f. 255.255.255.248


21
An administrator is configuring IPv6 on a router. The steps that
have already been completed are:
1. Activate IPv6 traffic forwarding.
2. Configure IPv6 addresses.
3. Globally configure RIPng.

What is the remaining step to complete the activation of RIPng?

a. Enter the ipv6 router rip name command and then use network statements to
activate RIPng on the interfaces.

b. Enter the ipv6 router rip name command and then specify which interfaces run
RIPng, which are passive, and which only receive.

c. Enter the interface mode for each IPv6 interface and enable RIPng with the ipv6
rip name enable command.

d. Enter the interface mode for each IPv6 interface and enable the multicast group
FF02::9, and then activate RIPng globally using the ipv6 router rip name command.

e. Enter the router rip command, and then activate RIPng using the version
command. RIPng then automatically runs on all IPv6 interfaces.


22
Which range includes all available networks in the 192.168.8.0/21 network?

a. 192.168.8.0/24 - 192.168.14.0/24

b. 192.168.8.0/24 - 192.168.15.0/24

c. 192.168.8.0/24 - 192.168.16.0/24

d. 192.168.8.0/24 - 192.168.17.0/24


23
Which two are best practices for creating a new IP addressing
scheme for a network? (Choose two.)

a. Plan and allow for significant growth.

b. Assign addresses to the access layer before any other layer.

c. Plan the entire addressing scheme before assigning any addresses.

d. Begin with the access layer network summary addresses and work to the edge.

e. Plan the addressing scheme to meet the current minimum requirement needs.

f. Implement statically assigned addresses to all hosts in the distribution layer first.


24
Refer to the exhibit. Which subnet will provide sufficient addresses for the Production
network with minimal waste?

a. 172.16.0.192/26

b. 172.16.0.192/27

c. 172.16.0.224/26

d. 172.16.0.160/26

e. 172.16.0.144/27


25
A network designer is implementing a new network for a company.
The designer is using all new Cisco equipment and has decided to select a hierarchical
routing protocol for the network. The designer wishes to minimize traffic from routing
updates but also needs fast routing convergence in the event of a topology change. Also,
the existing IP addressing scheme requires that the selected protocol support VLSM.
Which routing protocol should be chosen?

a. BGP

b. RIP v1

c. RIP v2

d. OSPF