CCNA4 Practice Final - Online Assessment

1. Question

Which two components of a WAN would more likely be used by an ISP? (Choose two.)

CO
CPE
demarcation point
DTE
toll network

2. Question

What are two advantages of packet switching over circuit switching? (Choose two.)

The communication costs are lower.
There are fewer delays in the data communications processes.
Multiple pairs of nodes can communicate over the same network channel.
A dedicated secure circuit is established between each pair of communicating nodes.
A connection through the service provider network is established quickly before communications start.

3. Question

What are two common types of circuit-switched WAN technologies? (Choose two.)

ISDN
MPLS
PSTN
ATM
Frame Relay

4. Question

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

public infrastructure
private infrastructure
dedicated
Internet
packet-switched

5. Question

Which WAN technology is capable of transferring voice and video traffic by utilizing a fixed payload of 48 bytes for every frame?

Frame Relay
ISDN
ATM
Ethernet WAN

6. Question

Which type of long distance telecommunication technology provides point-to-point connections and cellular access?

WiMax
municipal Wi-Fi
satellite
mobile broadband

7. Question

A small law firm wants to connect to the Internet at relatively high speed but with low cost. In addition, the firm prefers that the connection be through a dedicated link to the service provider. Which connection type should be selected?

DSL
ISDN
cable
leased line

8. Question

Refer to the exhibit. What type of Layer 2 encapsulation will be used for connection D on the basis of this configuration on a newly installed router:

RtrA(config)# interface serial0/0/0
RtrA(config-if)# ip address 128.107.0.2 255.255.255.252
RtrA(config-if)# no shutdown

CCNA4 v6.0 Practice Final Exam 003

Ethernet
Frame Relay
HDLC
PPP

9. Question

Which two protocols in combination should be used to establish a link with secure authentication between a Cisco and a non-Cisco router? (Choose two.)

HDLC
PPP
SLIP
PAP
CHAP

10. Question

Which statement is true about NCP?

Link termination is the responsibility of NCP.
Each network protocol has a corresponding NCP.
NCP establishes the initial link between PPP devices.
NCP tests the link to ensure that the link quality is sufficient.

11. Question

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

CCNA4 v6.0 Practice Final Exam 007

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.

12. Question

A network engineer is troubleshooting the failure of CHAP authentication over a PPP WAN link between two routers. When CHAP authentication is not included as part of the interface configuration on both routers, communication across the link is successful. What could be causing CHAP to fail?

The username configured on each router matches the hostname of the other router.
The secret password configured on each router is different.
The clock rate has not been configured on the DCE serial interface.
The hostname configured on each router is different.

13. Question

Which statement describes the difference between CHAP and PAP in PPP authentication?

PAP and CHAP provide equivalent protection against replay attacks.
PAP sends the password encrypted and CHAP does not send the password at all.
PAP uses a two-way handshake method and CHAP uses a three-way handshake method.
PAP sends the password once and CHAP sends the password repeatedly until acknowledgment of authentication is received.

14. Question

A technician at a remote location is troubleshooting a router and has emailed partial debug command output to a network engineer at the central office. The message that is received by the engineer only contains a number of LCP messages that relate to a serial interface. Which WAN protocol is being used on the link?

Frame Relay
HDLC
PPP
VPN

15. Question

Which DSL technology provides higher downstream bandwidth to the user than upstream bandwidth?

ADSL
SDSL
CDMA
TDMA

16. Question

Which communication protocol allows the creation of a tunnel through the DSL connection between the customer router and the ISP router to send PPP frames?

PPPoE
CHAP
POTS
ADSL

17. Question

Which group of APIs are used by an SDN controller to communicate with various applications?

eastbound APIs
westbound APIs
northbound APIs
southbound APIs

18. Question

Which two technologies are core components of Cisco ACI architecture? (Choose two.)

Application Network Profile
OpenFlow enabled switches
Interface to the Routing System
Application Policy Infrastructure Controller
Transparent Interconnection of Lots of Links

19. Question

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

20. Question

When GRE is configured on a router, what do the tunnel source and tunnel destination addresses on the tunnel interface refer to?

the IP addresses of the two LANs that are being connected together by the VPN
the IP address of host on the LAN that is being extended virtually
the IP addresses at each end of the WAN link between the routers
the IP addresses of tunnel interfaces on intermediate routers between the connected routers

21. Question

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.

What problem is preventing the hosts from communicating across the VPN tunnel?

The EIGRP configuration is incorrect.
The tunnel IP addresses are incorrect.
The tunnel source interfaces are incorrect.
The tunnel destinations addresses are incorrect.

22. Question

Which routing protocol is used to exchange routing information between autonomous systems on the Internet?

IS-IS
EIGRP
OSPF
BGP

23. Question

Refer to the exhibit. For which autonomous system would running BGP not be appropriate?

65002
65003
65004
65005

24. Question

What two functions describe uses of an access control list? (Choose two.)

ACLs assist the router in determining the best path to a destination.
Standard ACLs can restrict access to specific applications and ports.
ACLs provide a basic level of security for network access.
ACLs can permit or deny traffic based upon the MAC address originating on the router.
ACLs can control which areas a host can access on a network.

25. Question

A network administrator is explaining to a junior colleague the use of the lt and gt keywords when filtering packets using an extended ACL. Where would the lt or gt keywords be used?

in an IPv6 extended ACL that stops packets going to one specific destination VLAN
in an IPv4 named standard ACL that has specific UDP protocols that are allowed to be used on a specific server
in an IPv6 named ACL that permits FTP traffic from one particular LAN getting to another LAN
in an IPv4 extended ACL that allows packets from a range of TCP ports destined for a specific network device

26. 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 ACE 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 Practice Final Exam 001

Manually add the new deny ACE with a sequence number of 5.
Manually add the new deny ACE 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 ACE to access-list 1.

27. Question

Which three implicit access control entries are automatically added to the end of an IPv6 ACL? (Choose three.)

deny ip any any
deny ipv6 any any
permit ipv6 any any
deny icmp any any
permit icmp any any nd-ns
permit icmp any any nd-na

28. Question

Which statement describes a difference between the operation of inbound and outbound ACLs?

In contrast to outbound ALCs, inbound ACLs can be used to filter packets with multiple criteria.
Inbound ACLs can be used in both routers and switches but outbound ACLs can be used only on routers.
Inbound ACLs are processed before the packets are routed while outbound ACLs are processed after the routing is completed.
On a network interface, more than one inbound ACL can be configured but only one outbound ACL can be configured.

29. Question

What is the result of a DHCP starvation attack?

Legitimate clients are unable to lease IP addresses.
Clients receive IP address assignments from a rogue DHCP server.
The attacker provides incorrect DNS and default gateway information to clients.
The IP addresses assigned to legitimate clients are hijacked.

30. Question

What is a recommended best practice when dealing with the native VLAN?

Turn off DTP.
Use port security.
Assign it to an unused VLAN.
Assign the same VLAN number as the management VLAN.

31. Question

Which management protocol can be used securely with Cisco devices to retrieve or write to variables in a MIB?

SNMP version 1
SNMP version 2
SNMP version 2c
SNMP version 3

32. Question

What are two benefits of using SNMP traps? (Choose two.)

They reduce the load on network and agent resources.
They can passively listen for exported NetFlow datagrams.
They limit access for management systems only.
They can provide statistics on TCP/IP packets that flow through Cisco devices.
They eliminate the need for some periodic polling requests.

33. Question

What is an advantage of SNMPv3 over SNMPv1 or SNMPv2?

faster response times
security
support of other network monitoring protocols
mobility

34. 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

35. Question

RSPAN depends on which type of VLAN?

native VLAN
management VLAN
default VLAN
RSPAN VLAN
black hole VLAN
private VLAN

36. Question

Why is QoS an important issue in a converged network that combines voice, video, and data communications?

Data communications must be given the first priority.
Data communications are sensitive to jitter.
Voice and video communications are more sensitive to latency.
Legacy equipment is unable to transmit voice and video without QoS.

37. Question

What are two characteristics of voice traffic? (Choose two.)

It is delay sensitive.
It is bursty.
It can tolerate latency up to 400 ms.
It consumes few network resources.
It is insensitive to packet loss.

38. Question

True or False.
DiffServ is a QoS strategy that enforces end-to-end guarantees.

true
false

39. Question

What QoS step must occur before packets can be marked?

policing
shaping
classifying
queuing

40. Question

Refer to the exhibit. A network administrator has deployed QoS and has configured the network to mark traffic on the VoIP phones as well as the Layer 2 and Layer 3 switches. Where should initial marking occur to establish the trust boundary?

CCNA4 v6.0 Practice Final Exam 002

Trust Boundary 1
Trust Boundary 2
Trust Boundary 3
Trust Boundary 4

41. Question

Which IoT pillar provides the infrastructure for application mobility?

the Fog computing pillar
the application enablement platform pillar
the network connectivity pillar
the management and automation pillar

42. Question

What are three abstraction layers of a computer system? (Choose three.)

hardware
firmware
services
security
network
data

43. Question

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

44. Question

A user is unable to connect to the Internet. The network administrator decides to use the top-down troubleshooting approach. Which action should the administrator perform first?

Run the tracert command to identify the faulty device.
Check the patch cable connection from the PC to the wall.
Enter an IP address in the address bar of the web browser to determine if DNS has failed.
Run the ipconfig command to verify the IP address, subnet mask, and gateway on the PC.

45. Question

How do network administrators use IP SLAs to monitor a network and to detect a network failure early?

by using network protocol analyzers to evaluate errors
by measuring the CPU and memory usage on routers and switches
by simulating network data and IP services to collect network performance data in real time
by taking a snap shot of network performance and comparing with an established baseline

46. Question

What are two examples of network problems that are found at the data link layer? (Choose two.)

encapsulation errors
framing errors
electromagnetic interference
incorrect interface clock rates
late collisions and jabber

47. Question

The output of the show ip interface brief command indicates that Serial0/0/0 is up but the line protocol is down. What are two possible causes for the line protocol being in the down state? (Choose two.)

The clock rate is not set on the DTE.
An incorrect default gateway is set on the router.
A network is missing from the routing protocol configuration.
The encapsulation on the Serial0/0/0 interface is incorrect.
Keepalives are not being sent by the remote device.

48. Question

Refer to the exhibit. A small office uses an ISR to provide connectivity for both wired and wireless computers. One day, a sales person who is using a laptop cannot connect to Server1 through the wireless network. A network technician attempts to determine if the problem is on the wireless or the wired network. The technician pings successfully from the wireless laptop to the default gateway IP address on the ISR. What should be the next troubleshooting step?

CCNA4 v6.0 Practice Final Exam 005

Ping from the laptop to PC1.
Ping from Server1 to PC1.
Ping from Server1 to its gateway IP address.
Ping from the laptop to the Ethernet port on the cable modem.

49. Question

Refer to the exhibit. A ping from R1 to 10.1.1.2 is successful, but a ping from R1 to any address in the 192.168.2.0 network fails. What is the cause of this problem?

CCNA4 v6.0 Practice Final Exam 006

There is no gateway of last resort at R1.
The serial interface between the two routers is down.
A default route is not configured on R1.
The static route for 192.168.2.0 is incorrectly configured.

50. Question

Which feature is unique to IPv6 ACLs when compared to those of IPv4 ACLs?

the use of wildcard masks
an implicit deny any any statement
the use of named ACL statements
an implicit permit of neighbor discovery packets

51. Question

Match the QoS solution to the category. (Not all options are used.)

Sort elements

First-In, First-Out (FIFO)
Low latency Queuing (LLQ)
Integrated service (InServ)
Differentiated services (DiffServ)
weighted random early detection (WRED)

QoS Queuing Algorithm
QoS Queuing Algorithm
QoS Policy Model
QoS Policy Model

52. Question

Match the QoS marking field to its corresponding OSI model layer.

Sort elements

Layer 2
Layer 2
Layer 2
Layer 3
Layer 3

Experimental (EXP)
Class of Service (CoS)
Wi-Fi Traffic Identifier (TID)
IP Precedence
Differentiated Services Code Point (DSCP)

53. Question

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.

A user reports that PC0 cannot visit the web server http://www.server.com. Troubleshoot the network configuration to identify the problem.

What are three configuration issues that are causing the problem? (Choose three.)

SW1 has a port configuration issue.
VLAN 20 is not created correctly on SW1.
Routing on HQ is not configured correctly.
One of the interfaces on Branch is not activated.
The subinterface g0/0.1 on Branch is configured incorrectly for VLAN 10.
There is an encapsulation issue for the link between Branch and SW1.

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