CCNA4 Final Exam Form C - Online Assessment

1. Question

What is a primary difference between a company LAN and the WAN services that it uses?

The company must subscribe to an external WAN service provider.
The company has direct control over its WAN links but not over its LAN.
Each LAN has a specified demarcation point to clearly separate access layer and distribution layer equipment.
The LAN may use a number of different network access layer standards whereas the WAN will use only one standard.

2. Question

Which circumstance would result in an enterprise deciding to implement a corporate WAN?

when its employees become distributed across many branch locations
when the network will span multiple buildings
when the number of employees exceeds the capacity of the LAN
when the enterprise decides to secure its corporate LAN

3. Question

To which two layers of the OSI model do WAN technologies provide services? (Choose two.)

network layer
session layer
physical layer
transport layer
data link layer
presentation layer

4. Question

Which two technologies are private WAN technologies? (Choose two.)

cable
Frame Relay
DSL
ATM
cellular

5. Question

Which WAN technology can switch any type of payload based on labels?

PSTN
DSL
MPLS
T1/E1

6. Question

What technology can be used to create a private WAN via satellite communications?

VPN
3G/4G cellular
dialup
VSAT
WiMAX

7. Question

Which public WAN access technology utilizes copper telephone lines to provide access to subscribers that are multiplexed into a single T3 link connection?

ISDN
DSL
dialup
cable

8. Question

A corporation is searching for an easy and low cost solution to provide teleworkers with a secure connection to headquarters. Which solution should be selected?

dial-up connection
leased line connection
site-to-site VPN over the Internet
remote access VPN over the Internet

9. Question

How many DS0 channels are bounded to produce a 1.544 Mb/s DS1 line?

2
12
24
28

10. Question

Refer to the exhibit. Communication between two peers has failed. Based on the output that is shown, what is the most likely cause?

CCNA4 v6.0 Final Exam Form C 003

interface reset
unplugged cable
improper cable type
PPP issue

11. Question

Refer to the exhibit. Which type of Layer 2 encapsulation used for connection D requires Cisco routers?

CCNA4 v6.0 Final Exam Form C 002

Ethernet
PPPoE
HDLC
PPP

12. Question

Which three statements are true about PPP? (Choose three.)

PPP can use synchronous and asynchronous circuits.
PPP can only be used between two Cisco devices.
PPP carries packets from several network layer protocols in LCPs.
PPP uses LCPs to establish, configure, and test the data-link connection.
PPP uses LCPs to agree on format options such as authentication, compression, and error detection.

13. Question

A network administrator is configuring a PPP link with the commands:

R1(config-if)# encapsulation ppp
R1(config-if)# ppp quality 70

What is the effect of these commands?

The PPP link will be closed down if the link quality drops below 70 percent.
The NCP will send a message to the sending device if the link usage reaches 70 percent.
The LCP establishment phase will not start until the bandwidth reaches 70 percent or more.
The PPP link will not be established if more than 30 percent of options cannot be accepted.

14. Question

A network administrator is evaluating authentication protocols for a PPP link. Which three factors might lead to the selection of CHAP over PAP as the authentication protocol? (Choose three.)

establishes identities with a two-way handshake
uses a three-way authentication periodically during the session to reconfirm identities
control by the remote host of the frequency and timing of login events
transmits login information in encrypted format
uses an unpredictable variable challenge value to prevent playback attacks
makes authorized network administrator intervention a requirement to establish each session

15. Question

Which cellular or mobile wireless standard is considered a fourth generation technology?

LTE
GSM
CDMA
UMTS

16. Question

A company is looking for the least expensive broadband solution that provides at least 10 Mb/s download speed. The company is located 5 miles from the nearest provider. Which broadband solution would be appropriate?

satellite
DSL
WiMax
cable

17. Question

Which technology can ISPs use to periodically challenge broadband customers over DSL networks with PPPoE?

PAP
CHAP
HDLC
Frame Relay

18. Question

What are the three core components of the Cisco ACI architecture? (Choose three.)

Application Network Profile
Application Policy Infrastructure Controller
Cisco Nexus Switches
Microsoft hypervisor
Cisco Information Server
Virtual Security Gateway

19. Question

Which statement describes a feature of site-to-site VPNs?

The VPN connection is not statically defined.
VPN client software is installed on each host.
Internal hosts send normal, unencapsulated packets.
Individual hosts can enable and disable the VPN connection.

20. Question

What are three features of a GRE tunnel? (Choose three.)

creates nonsecure tunnels between remote sites
transports multiple Layer 3 protocols
creates additional packet overhead
uses RSA signatures to authenticate peeers
provides encryption to keep VPN traffic confidential
supports hosts as GRE tunnel endpoints by installing Cisco VPN client software

21. Question

Refer to the exhibit. What two commands are needed to complete the GRE tunnel configuration on router R1? (Choose two.)

CCNA4 v6.0 Final Exam Form C 007

R1(config-if)# tunnel source 209.165.202.129
R1(config-if)# tunnel source 172.16.2.1
R1(config-if)# tunnel destination 206.165.202.130
R1(config-if)# tunnel destination 172.16.2.2
R1(config-if)# tunnel source 209.165.202.130
R1(config-if)# tunnel destination 206.165.202.129

22. Question

What does BGP use to exchange routing updates with neighbors?

TCP connections
area numbers
group identification numbers
hellos

23. Question

Refer to the exhibit. The network administrator that has the IP address of 10.0.70.23/25 needs to have access to the corporate FTP server (10.0.54.5/28). The FTP server is also a web server that is accessible to all internal employees on networks within the 10.x.x.x address. No other traffic should be allowed to this server. Which extended ACL would be used to filter this traffic, and how would this ACL be applied? (Choose two.)

CCNA4 v6.0 Final Exam Form C 011

access-list 105 permit ip host 10.0.70.23 host 10.0.54.5
access-list 105 permit tcp any host 10.0.54.5 eq www
access-list 105 permit ip any any
access-list 105 permit tcp host 10.0.54.5 any eq www
access-list 105 permit tcp host 10.0.70.23 host 10.0.54.5 eq 20
access-list 105 permit tcp host 10.0.70.23 host 10.0.54.5 eq 21
access-list 105 permit tcp host 10.0.70.23 host 10.0.54.5 eq 20
access-list 105 permit tcp host 10.0.70.23 host 10.0.54.5 eq 21
access-list 105 permit tcp 10.0.0.0 0.255.255.255 host 10.0.54.5 eq www
access-list 105 deny ip any host 10.0.54.5
access-list 105 permit ip any any
R2(config)# interface gi0/0
R2(config-if)# ip access-group 105 in
R1(config)# interface gi0/0
R1(config-if)# ip access-group 105 out
R1(config)# interface s0/0/0
R1(config-if)# ip access-group 105 out

24. Question

Refer to the exhibit. A router has an existing ACL that permits all traffic from the 172.16.0.0 network. The administrator attempts to add a new statement to the ACL that denies packets from host 172.16.0.1 and receives the error message that is shown in the exhibit. What action can the administrator take to block packets from host 172.16.0.1 while still permitting all other traffic from the 172.16.0.0 network?

CCNA4 v6.0 Final Exam Form C 012

Manually add the new deny statement with a sequence number of 5.
Manually add the new deny statement with a sequence number of 15.
Create a second access list denying the host and apply it to the same interface.
Add a deny any any statement to access-list 1.

25. Question

Refer to the exhibit. What can be determined from this output?

CCNA4 v6.0 Final Exam Form C 001

The ACL is missing the deny ip any any ACE.
Because there are no matches for line 10, the ACL is not working.
The ACL is only monitoring traffic destined for 10.23.77.101 from three specific hosts.
The router has not had any Telnet packets from 10.35.80.22 that are destined for 10.23.77.101.

26. Question

What is the only type of ACL available for IPv6?

named standard
named extended
numbered standard
numbered extended

27. Question

Which IPv6 ACL command entry will permit traffic from any host to an SMTP server on network 2001:DB8:10:10::/64?

permit tcp any host 2001:DB8:10:10::100 eq 25
permit tcp host 2001:DB8:10:10::100 any eq 25
permit tcp any host 2001:DB8:10:10::100 eq 23
permit tcp host 2001:DB8:10:10::100 any eq 23

28. Question

Refer to the exhibit. Considering how packets are processed on a router that is configured with ACLs, what is the correct order of the statements?

CCNA4 v6.0 Final Exam Form C 008

C-B-A-D
A-B-C-D
C-B-D-A
B-A-D-C
D-A-C-B

29. Question

Which two hypervisors are suitable to support virtual machines in a data center? (Choose two.)

Virtual PC
VMware Fusion
VMware ESX/ESXi
Oracle VM VirtualBox
Microsoft Hyper-V 2012

30. Question

How can DHCP spoofing attacks be mitigated?

by disabling DTP negotiations on nontrunking ports
by implementing DHCP snooping on trusted ports
by implementing port security
by the application of the ip verify source command to untrusted ports

31. Question

What is a secure configuration option for remote access to a network device?

Configure SSH.
Configure Telnet.
Configure 802.1x.
Configure an ACL and apply it to the VTY lines.

32. Question

What action can a network administrator take to help mitigate the threat of VLAN attacks?

Disable VTP.
Configure all switch ports to be members of VLAN 1.
Disable automatic trunking negotiation.
Enable PortFast on all switch ports.

33. Question

What two protocols are supported on Cisco devices for AAA communications? (Choose two.)

VTP
LLDP
HSRP
RADIUS
TACACS+

34. Question

Which SNMP message type informs the network management system (NMS) immediately of certain specified events?

GET request
SET request
GET response
Trap

35. Question

Refer to the exhibit. A SNMP manager is using the community string of snmpenable and is configured with the IP address 172.16.10.1. The SNMP manager is unable to read configuration variables on the R1 SNMP agent. What could be the problem?

CCNA4 v6.0 Final Exam Form C 006

The SNMP agent is not configured for read-only access.
The community of snmpenable2 is incorrectly configured on the SNMP agent.
The ACL is not permitting access by the SNMP manager.
The incorrect community string is configured on the SNMP manager.

36. Question

Refer to the exhibit. Which SNMP authentication password must be used by the member of the ADMIN group that is configured on router R1?

CCNA4 v6.0 Final Exam Form C 005

cisco54321
cisco98765
cisco123456
cisco654321

37. Question

A network administrator has noticed an unusual amount of traffic being received on a switch port that is connected to a college classroom computer. Which tool would the administrator use to make the suspicious traffic available for analysis at the college data center?

RSPAN
TACACS+
802.1X
DHCP snooping
SNMP

38. Question

What network monitoring tool copies traffic moving through one switch port, and sends the copied traffic to another switch port for analysis?

802.1X
SNMP
SPAN
syslog

39. Question

Voice packets are being received in a continuous stream by an IP phone, but because of network congestion the delay between each packet varies and is causing broken conversations. What term describes the cause of this condition?

buffering
latency
queuing
jitter

40. Question

What mechanism compensates for jitter in an audio stream by buffering packets and then replaying them outbound in a steady stream?

digital signal processor
playout delay buffer
voice codec
WFQ

41. Question

Which QoS mechanism allows delay-sensitive data, such as voice, to be sent first before packets in other queues are sent?

CBWFQ
FIFO
LLQ
FCFS

42. Question

Which type of network traffic cannot be managed using congestion avoidance tools?

TCP
UDP
IP
ICMP

43. Question

Refer to the exhibit. As traffic is forwarded out an egress interface with QoS treatment, which congestion avoidance technique is used?

CCNA4 v6.0 Final Exam Form C 004

traffic shaping
weighted random early detection
classification and marking
traffic policing

44. Question

What is the function of a QoS trust boundary?

A trust boundary identifies the location where traffic cannot be remarked.
A trust boundary identifies which devices trust the marking on packets that enter a network.
A trust boundary only allows traffic to enter if it has previously been marked.
A trust boundary only allows traffic from trusted endpoints to enter the network.

45. Question

Which type of QoS marking is applied to Ethernet frames?

CoS
ToS
DSCP
IP precedence

46. Question

Which pillar of the Cisco IoT System allows data to be analyzed and managed at the location where it is generated?

data analytics
fog computing
network connectivity
application enhancement platform

47. Question

A network administrator has moved the company intranet web server from a switch port to a dedicated router interface. How can the administrator determine how this change has affected performance and availability on the company intranet?

Conduct a performance test and compare with the baseline that was established previously.
Determine performance on the intranet by monitoring load times of company web pages from remote sites.
Interview departmental administrative assistants to determine if web pages are loading more quickly.
Compare the hit counts on the company web server for the current week to the values that were recorded in previous weeks.

48. Question

In which stage of the troubleshooting process would ownership be researched and documented?

Gather symptoms.
Implement corrective action.
Isolate the problem.
Update the user and document the problem.

49. Question

Which troubleshooting approach is more appropriate for a seasoned network administrator rather than a less-experienced network administrator?

a less-structured approach based on an educated guess
an approach comparing working and nonworking components to spot significant differences
a structured approach starting with the physical layer and moving up through the layers of the OSI model until the cause of the problem is identified
an approach that starts with the end-user applications and moves down through the layers of the OSI model until the cause of the problem has been identified

50. Question

A router has been configured to use simulated network traffic in order to monitor the network performance between the router and a distant network device. Which command would display the results of this analysis?

show ip route
show ip protocols
show ip sla statistics
show monitor

51. Question

Which type of tool would an administrator use to capture packets that are going to and from a particular device?

NMS tool
knowledge base
baselining tool
protocol analyzer

52. Question

Refer to the exhibit. Which two statements describe the results of entering these commands? (Choose two.)

CCNA4 v6.0 Final Exam Form C 010

R1 will send system messages of levels 0 (emergencies) to level 4 (warnings) to a server.
R1 will not send critical system messages to the server until the command debug all is entered.
R1 will reset all the warnings to clear the log.
R1 will output the system messages to the local RAM.
The syslog server has the IPv4 address 192.168.10.10.

53. Question

Refer to the exhibit. A network administrator discovers that host A is having trouble with Internet connectivity, but the server farm has full connectivity. In addition, host A has full connectivity to the server farm. What is a possible cause of this problem?

CCNA4 v6.0 Final Exam Form C 009

The router has an incorrect gateway.
Host A has an overlapping network address.
Host A has an incorrect default gateway configured.
Host A has an incorrect subnet mask.
NAT is required for the host A network.

54. Question

Match the operation to the appropriate QoS model.

Sort elements

Best Effort
Best Effort
IntServ
IntServ
DiffServ
DiffServ

most scalable model
no packets receive preferential treatment
provides end-to-end QoS
requests network resources
network devices are setup to handle multiple traffic classes
traffic is identified in classes base on business

55. Question

Match the cloud model with the description.

Sort elements

uses Internet to provide services
consists of two or more types of clouds
customized for functional needs
available to a single specific organization

public cloud
hybrid cloud
community cloud
private cloud

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