CCNA 4 R&S: Connecting Networks Chapter 9 v5.02 Exam Answers 2016

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1. Users are reporting longer delays in authentication and in accessing network resources during certain time periods of the week. What kind of information should network engineers check to find out if this situation is part of a normal network behavior?

syslog records and messages
the network performance baseline
debug output and packet captures
network configuration files

2. A team of engineers has identified a solution to a significant network problem. The proposed solution is likely to affect critical network infrastructure components. What should the team follow while implementing the solution to avoid interfering with other processes and infrastructure?

change-control procedures
one of the layered troubleshooting approaches
knowledge base guidelines
syslog messages and reports

3. After which step in the network troubleshooting process would one of the layered troubleshooting methods be used?

documenting symptoms
determining ownership
narrowing the scope
gathering symptoms from suspect devices

4. A user reports that the workstation cannot connect to a networked printer in the office in order to print a report created with word processing software. Which troubleshooting action by the helpdesk technician would follow the divide-and-conquer approach?

Ask the user to launch the web browser.
Ask the user to save the working document.
Ask the user to issue the ipconfig command.
Ask the user to unplug and reattach the network cable.

5. A network engineer is troubleshooting a network problem and can successfully ping between two devices. However, Telnet between the same two devices does not work. Which OSI layers should the administrator investigate next?

all of the layers
from the network layer to the application layer
from the network layer to the physical layer
only the network layer

6. Which troubleshooting method begins by examining cable connections and wiring issues?

top-down
bottom-up
substitution
divide-and-conquer

7.

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

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.

8. An administrator is troubleshooting an Internet connectivity problem on a router. The output of the show interfaces gigabitethernet 0/0 command reveals higher than normal framing errors on the interface that connects to the Internet. At what layer of the OSI model is the problem likely occurring?

Layer 1
Layer 2
Layer 3
Layer 4
Layer 7

9. Users report that the new web site http://www.company1.biz cannot be accessed. The helpdesk technician checks and verifies that the web site can be accessed with http://www.company1.biz:90. Which layer in the TCP/IP model is involved in troubleshooting this issue?

application
transport
internet
network access

10. A user reports that after an OS patch of the networking subsystem has been applied to a workstation, it performs very slowly when connecting to network resources. A network technician tests the link with a cable analyzer and notices that the workstation sends an excessive number of frames smaller than 64 bytes and also other meaningless frames. What is the possible cause of the problem?

cabling faults
corrupted NIC driver
Ethernet signal attenuation
corrupted application installation

11. A network administrator is configuring SSH on a router. When verifying the configuration, the administrator notices that the SSH connection requests fail, but the Telnet connection requests from the same workstation are successful. Which two parts of the router configuration should be checked to try to locate the problem? (Choose two.)

The ip access-class command is missing.
The password is misconfigured on the console line.
The transport input command is incorrect on the vty lines.*
A standard ACL is possibly blocking the workstation from access to the router.
An extended ACL that is referencing the port argument for SSH is misconfigured.
*

12. A user in a large office calls technical support to complain that a PC has suddenly lost connectivity to the network. The technician asks the caller to talk to nearby users to see if other machines are affected. The caller reports that several immediate neighbors in the same department have a similar problem and that they cannot ping each other. Those who are seated in other departments have connectivity. What should the technician check as the first step in troubleshooting the issue?

the power outlet to the PC that is used by the caller
the trunks between switches in the wiring closet
the status of the departmental workgroup switch in the wiring closet
the cable that connects the PC of the caller to the network jack
the cable connection between a PC and a network outlet that is used by a neighbor

13. After cables were reconnected to a switch in a wiring closet, several PCs that had been previously configured manually can no longer access resources outside the local network. The PC configurations were not altered in the process and resources on the local network can still be accessed. What is a possible cause of the problem?

The cabling to the PCs is faulty.
The PCs are no longer on the correct VLAN.
The DHCP server has been misconfigured.
The DNS configuration on the PCs is incorrect.

14.

Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.)

There is connectivity between this device and the device at 192.168.100.1.
The connectivity between these two hosts allows for videoconferencing calls.
There are 4 hops between this device and the device at 192.168.100.1.
The average transmission time between the two hosts is 2 miliseconds.
This host does not have a default gateway configured.

15. Fill in the blank.

Use the ” ARP   ” cache to verify IPv4 address to Layer 2 Ethernet address mappings on a host computer.

16. Which two specialized troubleshooting tools can monitor the amount of traffic that passes through a switch? (Choose two.)

digital multimeter
TDR
NAM
portable network analyzer
DTX cable analyzer

17. A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.)

ipconfig
telnet
ping
arp -a
nslookup
tracert
netsh interface ipv6 show neighbor

18. A company is setting up a web site with SSL technology to protect the authentication credentials required to access the web site. A network engineer needs to verify that the setup is correct and that the authentication is indeed encrypted. Which tool should be used?

baselining tool
cable analyzer
protocol analyzer
fault-management tool

19. In which step of gathering symptoms does the network engineer determine if the problem is at the core, distribution, or access layer of the network?

Determine ownership.
Narrow the scope.
Gather information.
Document the symptoms.
Determine the symptoms.

20. A network technician is troubleshooting an email connection problem. Which question to the end-user will provide clear information to better define the problem?

How big are the emails you tried to send?
When did you first notice your email problem?
Is your email working now?
What kind of equipment are you using to send emails?

21. A network engineer issues the show cdp neighbor command on several network devices during the process of network documentation. What is the purpose of performing this command?

to obtain information about directly connected Cisco devices 
to check the networks that are advertised by the neighboring routers
to verify the network addresses that are attached to the network devices
to check the connectivity of PCs that are connected to the network devices

22.

Refer to exhibit. A network engineer is troubleshooting a WAN connectivity problem. A ping to a remote router is successful and an attempt to telnet to the same router displays the exhibited output. What does the output verify?

A Telnet password has not been configured on the remote router.
The transport layer is connecting successfully.
The web server service is password protected.
The remote router IPv6 address is incorrect.

23. When should a network performance baseline be measured?

after normal work hours to reduce possible interruptions
during normal work hours of an organization 
when a denial of service attack to the network is detected and blocked
immediately after the main network devices restarted

24. Which number represents the most severe level of syslog logging?

7
0
1
10

25.

Place the options in the following order: 
[+] CiscoView 
[+] What’s Up Gold 
[+] HP OpenviewBTO 
[#] SolarWinds LAN surveyor 
[#] CyberGauge software 
[*] Internet search engines 
[*] Cisco Tools & Resources web site

[+] Order does not matter within this group.
[#] Order does not matter within this group.
[*] Order does not matter within this group.

Here are some updated questions and answers as of 08/18/20115. (Currently in class)

26. Which statement describes the physical topology for a LAN?

It shows the order in which hosts access the network.
It describes whether the LAN is a broadcast or token-passing network.
It defines how hosts and network devices connect to the LAN.*
It depicts the addressing scheme that is employed in the LAN.
27.What is a purpose of establishing a network baseline?

It provides a statistical average for network performance.
It checks the security configuration of network devices.
It manages the performance of network devices.
It creates a point of reference for future network evaluations.*
28. The newly configured ASBR that connects a company to the Internet has a default route configured and has the default-information originate command entered. Devices connected through this router can access the Internet. The problem is that no other OSPF routers have a default route in the routing table and no other users throughout the organization can access the Internet. What could be the problem?

The ASBR should use the exit_interface argument instead of next-hop on the default route.
The ASBR does not have OSPF configured.
The ASBR does not have an OSPF neighbor.*
The other routers are not configured to accept LSA type 4s.
29. An internal corporate server can be accessed by internal PCs, but not by external Internet users that should have access. What could be the issue?

The switch port to which the server connects has an incorrect VLAN configured.
Static NAT has not been configured properly or at all.*
The default gateway router for the server does not have a default route.
The server does not have a private IP address assigned.

30. A networked PC is having trouble accessing the Internet, but can print to a local printer and ping other computers in the area. Other computers on the same network are not having any issues. What is the problem?

The default gateway router does not have a default route.
The switch port to which the PC connects has an incorrect VLAN configured.
The PC has a missing or incorrect default gateway.*
The link between the switch to which the PC connects and the default gateway router is down.

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

baselining tool
protocol analyzer*
knowledge base
NMS tool

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CCNA4 Final Exam (v5.03)

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1. Which two statements about DSL are true? (Choose two.)

users are on a shared medium

uses RF signal transmission

local loop can be up to 3.5 miles (5.5km)*

physical and data link layers are defined by DOCSIS

user connections are aggregated at a DSLAM located at the CO*

2. Which two statements are true regarding a PPP connection between two Cisco routers? (Choose two.)

LCP tests the quality of the link.*

LCP manages compression on the link.*

Only a single NCP is allowed between the two routers.

NCP terminates the link when data exchange is complete.

With CHAP authentication, the routers exchange plain text passwords.

3. A network administrator is asked to design a system to allow simultaneous access to the Internet for 250 users. The ISP can only supply five public IP addresses for this network. What technology can the administrator use to accomplish this task?

classful subnetting

variable length subnet masks

classless interdomain routing

port-based Network Address Translation*

4. Refer to the exhibit. An administrator is configuring NAT to provide Internet access to the inside network. After the configuration is completed, users are unable to access the Internet. What is the cause of the problem?

The NAT pool is using an invalid address range.

The inside and outside interfaces are backwards.

The ACL is referencing the wrong network address.

The NAT inside source command is referring to the wrong ACL.*

5. What is the expected behavior of an ADSL service?

The download rate is faster than the upload rate.*

The upload rate is faster than the download rate.

The download and upload rates are the same.

The user can select the upload and download rates based on need.

6. A network administrator is troubleshooting the dynamic NAT that is configured on router R2. Which command can the administrator use to see the total number of active NAT translations and the number of addresses that are allocated from the NAT pool?

R2# show ip nat statistics*

R2# show ip nat translations

R2# show running-config

R2# clear ip nat translation

7. Which type of traffic would most likely have problems when passing through a NAT device?

Telnet

IPsec*

HTTP

ICMP

DNS

8. Refer to the exhibit. The inside local IP address of PC-A is 192.168.0.200. What will be the inside global address of packets from PC-A after they are translated by R1?

10.0.0.1

172.16.0.1

192.168.0.1

192.168.0.200

209.165.200.225*

9. Refer to the exhibit. What kind of NAT is being configured on R1?

PAT

dynamic NAT

NAT overload

port forwarding*

10. What benefit does NAT64 provide?

It allows sites to use private IPv6 addresses and translates them to global IPv6 addresses.

It allows sites to connect multiple IPv4 hosts to the Internet via the use of a single public IPv4 address.

It allows sites to connect IPv6 hosts to an IPv4 network by translating the IPv6 addresses to IPv4 addresses.*

It allows sites to use private IPv4 addresses, and thus hides the internal addressing structure from hosts on public IPv4 networks.

11. What are three benefits of using Frame Relay for WAN connectivity? (Choose three.)

QoS support using the IP precedence field

one physical interface that can be used for several circuits*

integrated encryption

mature technology*

reasonable cost*

seamless direct connectivity to an Ethernet LAN

12. The DLCI number assigned to a Frame Relay circuit is to be manually added on a point-to-point link. Which three subinterface commands could be used to complete the configuration? (Choose three.)

bandwidth kilobits*

encapsulation frame-relay

frame-relay interface-dlci dlci*

frame-relay map ip ip-address dlci

frame-relay map ip ip-address dlci broadcast

ip address ip-address mask*

no shutdown

13. Which command can be used to check the information about congestion on a Frame Relay link?

show frame-relay pvc*

show frame-relay lmi

show interfaces

show frame-relay map

14. 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.

15. Refer to the exhibit. A network administrator has implemented the configuration in the displayed output. What is missing from the configuration that would be preventing OSPF routing updates from passing to the Frame Relay service provider?

The passive-interface command has not been issued on interface serial 0/1/0.

The broadcast keyword has not been issued.*

The directly connected neighbor should have been identified by using static mapping.

The command to disable split horizon has not been issued.

16. What is a characteristic of Frame Relay that allows customer data transmissions to dynamically “burst” over their CIR for short periods of time?

The combination of LMI status messages and Inverse ARP messages enables the CIR to be exceeded.

The physical circuits of the Frame Relay network are shared between subscribers and there may be times when unused bandwidth is available.*

Bursting is enabled by the configuration of multiple subinterfaces on one physical interface.

BECN and FECN messages notify the router that the CIR can be exceeded.

17. Which broadband technology would be best for a small office that requires fast upstream connections?

DSL

fiber-to-the-home*

cable

WiMax

18. What is the protocol that provides ISPs the ability to send PPP frames over DSL networks?

PPPoE*

CHAP

ADSL

LTE

19. Which technology requires the use of PPPoE to provide PPP connections to customers?

dialup analog modem

dialup ISDN modem

DSL*

T1

20. Why is it useful to categorize networks by size when discussing network design?

Knowing the number of connected devices will define how many multilayer switches will be necessary at the core layer.

Knowing the number of connected devices will define how many additional layers will be added to the three-tier hierarchical network design.

A high-level redundancy at the access layer may be better implemented if the number of connected devices is known.

The complexity of networking infrastructure will vary according to the number of connected devices.*

21. A company connects to one ISP via multiple connections. What is the name given to this type of connection?

single-homed

multihomed

dual-multihomed

dual-homed*

22. What is one advantage to designing networks in building block fashion for large companies?

failure isolation*

increased network access time

coarse security control

fewer required physical resources

23. Which network module maintains the resources that employees, partners, and customers rely on to effectively create, collaborate, and interact with information?

access-distribution

services

data center*

enterprise edge

24. A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.)

arp -a

ipconfig*

nslookup*

ping*

telnet

tracert

netsh interface ipv6 show neighbor

25. A team of engineers has identified a solution to a significant network problem. The proposed solution is likely to affect critical network infrastructure components. What should the team follow while implementing the solution to avoid interfering with other processes and infrastructure?

change-control procedures*

one of the layered troubleshooting approaches

knowledge base guidelines

syslog messages and reports

26. Which troubleshooting tool would a network administrator use to check the Layer 2 header of frames that are leaving a particular host?

protocol analyzer*

baselining tool

knowledge base

CiscoView

27. Which two specialized troubleshooting tools can monitor the amount of traffic that passes through a switch? (Choose two.)

TDR

digital multimeter

NAM*

portable network analyzer*

DTX cable analyzer

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

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.*

29. Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.)

There is connectivity between this device and the device at 192.168.100.1.*

The connectivity between these two hosts allows for videoconferencing calls.

There are 4 hops between this device and the device at 192.168.100.1.*

The average transmission time between the two hosts is 2 miliseconds.

This host does not have a default gateway configured.

30. Which statement is a characteristic of SNMP MIBs?

The MIB organizes variables in a flat manner.

The SNMP agent uses the SNMP manager to access information within the MIB.

The NMS must have access to the MIB in order for SNMP to operate properly.*

The MIB structure for a given device includes only variables that are specific to that device or vendor.

31. Refer to the exhibit. Router R1 was configured by a network administrator to use SNMP version 2. The following commands were issued:

R1(config)# snmp-server community batonaug ro SNMP_ACL
R1(config)# snmp-server contact Wayne World
R1(config)# snmp-server host 192.168.1.3 version 2c batonaug
R1(config)# ip access-list standard SNMP_ACL
R1(config-std-nacl)# permit 192.168.10.3

Why is the administrator not able to get any information from R1?

The snmp-server enable traps command is missing.

The snmp-server community command needs to include the rw keyword.

There is a problem with the ACL configuration.*

The snmp-server location command is missing.

32. What is used as the default event logging destination for Cisco routers and switches?

terminal line

syslog server

console line*

workstation

33. In the data gathering process, which type of device will listen for traffic, but only gather traffic statistics?

NMS

syslog server

NetFlow collector*

SNMP agent

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

GET request

SET request

GET response

Trap*

35. Which three flows associated with consumer applications are supported by NetFlow collectors? (Choose three.)

bandwidth regulation

accounting*

billing*

quality of service

error correction

network monitoring*

36. Which algorithm is considered insecure for use in IPsec encryption?

3DES*

AES

RSA

SHA-1

37. Which statement describes a characteristic of dense wavelength division multiplexing (DWDM)?

It supports the SONET standard, but not the SDH standard.

It enables bidirectional communications over one pair of copper cables.

It can be used in long-range communications, like connections between ISPs.*

It assigns incoming electrical signals to specific frequencies.

38. Two corporations have just completed a merger. The network engineer has been asked to connect the two corporate networks without the expense of leased lines. Which solution would be the most cost effective method of providing a proper and secure connection between the two corporate networks?

Cisco AnyConnect Secure Mobility Client with SSL

Cisco Secure Mobility Clientless SSL VPN

Frame Relay

remote access VPN using IPsec

site-to-site VPN*

39. Refer to the exhibit. Which IP address is configured on the physical interface of the CORP router?

10.1.1.1

10.1.1.2

209.165.202.133*

209.165.202.134

40. What are three characteristics of the generic routing encapsulation (GRE) protocol? (Choose three.)

GRE tunnels support multicast traffic.*

By default, GRE does not include any flow control mechanisms.*

Developed by the IETF, GRE is a secure tunneling protocol that was designed for Cisco routers.

GRE uses AES for encryption unless otherwise specified.

GRE creates additional overhead for packets that are traveling through the VPN.*

GRE provides encapsulation for a single protocol type that is traveling through the VPN.

41. Which WAN technology can serve as the underlying network to carry multiple types of network traffic such as IP, ATM, Ethernet, and DSL?

ISDN

MPLS*

Frame Relay

Ethernet WAN

42. Which two statements describe remote access VPNs? (Choose two.)

Remote access VPNs are used to connect entire networks, such as a branch office to headquarters.

End users are not aware that VPNs exists.

A leased line is required to implement remote access VPNs.

Client software is usually required to be able to access the network.*

Remote access VPNs support the needs of telecommuters and mobile users.*

43. 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

44. An intercity bus company wants to offer constant Internet connectivity to the users traveling on the buses. Which two types of WAN infrastructure would meet the requirements? (Choose two.)

private infrastructure

public infrastructure*

dedicated

circuit-switched

cellular*

45. Under which two categories of WAN connections does Frame Relay fit? (Choose two.)

public infrastructure

private infrastructure*

dedicated

Internet

packet-switched*

46. What term is used to identify the point where the customer network ends and the service provider network begins?

CSU/DSU

the central office

the local loop

the demarcation point*

47. Which two characteristics describe time-division multiplexing? (Choose two.)

Traffic is allocated bandwidth across a single wire based on preassigned time slots.*

Bandwidth is allocated to channels based on whether a station has data to transmit.

Encoding technology provides high data throughput in a minimum RF spectrum by supporting parallel data transmission.

Depending on the configured Layer 2 protocol, data is transmitted across two or more channels via the use of time slots.

Data capacity across a single link increases as bits from multiple sources are transmitted using interleaved slices of time.*

48. A branch office uses a leased line to connect to the corporate network. The lead network engineer confirms connectivity between users in the branch office, but none of the users can access corporate headquarters. System logs indicate that nothing has changed in the branch office network. What should the engineer consider next to resolve this network outage?

The network technician for the branch office should troubleshoot the switched infrastructure.

The system administrator in the branch office should reconfigure the default gateway on the user PCs.

The server administrator in the branch office should reconfigure the DHCP server.

The service provider for the branch office should troubleshoot the issue starting from the point of demarcation.*

49. Refer to the exhibit. Which three steps are required to configure Multilink PPP on the HQ router? (Choose three.)

Assign the serial interfaces to the multilink bundle.*

Assign the Fast Ethernet interface to the multilink bundle.

Enable PPP encapsulation on the multilink interface.

Enable PPP encapsulation on the serial interfaces.*

Bind the multilink bundle to the Fast Ethernet interface.

Create and configure the multilink interface.*

50. 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?

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.*

51. Refer to the exhibit. H1 can only ping H2, H3, and the Fa0/0 interface of router R1. H2 and H3 can ping H4 and H5. Why might H1 not be able to successfully ping H4 and H5?

Router R1 does not have a route to the destination network.

Switch S1 does not have an IP address configured.

The link between router R1 and switch S2 has failed.

Host H1 does not have a default gateway configured.*

Hosts H4 and H5 are members of a different VLAN than host H1.

52. What is required for a host to use an SSL VPN to connect to a remote network device?

VPN client software must be installed.

A site-to-site VPN must be preconfigured.

A web browser must be installed on the host.*

The host must be connected to a wired network.

53. What type of information is collected by Cisco NetFlow?

interface errors

CPU usage

memory usage

traffic statistics*

54. Match the characteristic to the appropriate authentication protocol. (Not all options are used.)

Place the options in the following order: 
PAP Characteristics
uses two-way handshake
single challenge
weak authentication
clear text passwords

CHAP Characteristics
uses three-way handshake
repeated challenges
strong authentication
encrypted passwords

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