CCNA Practice Exam 5 - MCQs

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Which of the following are true regarding passwords on a Cisco router?

a) All passwords can be encrypted
b) All passwords can be entered using the set-up dialogue
c) A password can be set before a user can enter the privileged mode
d) A password can be set for individual lines
e) TACACS or Radius password authentication can be used.

a, b, and c

a only

a,c,d, and e

none of the above

How many bytes is an Ethernet address?

Identify which of the services below use both TCP and UDP ports:

FTP

DNS

TELNET

SSH

Which of the following is true of a Switch?

Switches forward packets based on Layer3 protocol.

Switches forward packets based on IPX address.

Switches forward packets based on MAC address.

Switches forward packets based on IP address.

Frame Relay technique uses

Circuit Switching

Message Switching

Connection oriented Packet Switching

Hybrid Switching

A client workstation is connected to a DHCP server through a switch and a router, The client machine has been able to access the network resources without any problem. However, after the recent configuration change on the DHCP server, the client workstation is not able to access any network resources. What is the likely solution.

Issue a tracert command to DHCP serve

Reset switch MAC address table

Clear arp cache on the router
Issue a tracert command to DHCP server

Use ipconfig command with /release and /renew options

You are asked to evolve a TCP/IP addressing scheme for your Organization. How many network numbers (subnet number) must you allow when you design the network for your organization?

One for each WAN connection only

One for each network card

One for each subnet, one for each WAN connection

One subnet for each Host

Host A receives a frame and discards it after determining that it is corrupt. At which OSI layer are frames checked for errors?

Physical

Data-link

FCS or CRC

Application

Which of the following requires thst all channels in a message transmission path be of the same speed?

Packet-switched Networks

Circuit-switched Networks

Message-switched Networks

None of the above

FDDI is an example of which topology?

Bus Topology

Ring Topology

Star Topology

None of these

Which protocol working at the Transport layer provides a connectionless service between hosts?

ARP

UDP

TCP

Please see the figure below. Host A is trying to telnet to Host B. However,
the Ethernet interface fa0/0 on RTC is not functioning. Which of the following
statements are true? (choose 2 best answers)

RTC will inform Host A that Host B is unreachable

RTC will inform RTA that Host B is unreachable

RTC will send a destination unreachable message

RTB will send a destination unreachable message to RTA

How should a router that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates?

Configure a separate sub-interface for each PVC with a unique DLCI and subnet assigned to the sub-interface

Configure a single sub-interface to establish multiple PVCconnections to multiple remote router interfaces

Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic

Configure many sub-interfaces on the same subnet

You have an IP of 156.233.42.56 with a subnet mask of 7 bits. How many hosts and subnets are possible assuming that subnet 0 is not used?

512 subnets and 128 hosts

510 subnets and 126 hosts

128 subnets and 512 hosts
512 subnets and 128 hosts

126 subnets and 510 hosts

You want to ping the loopback address of your local host. What will you type? (choose two)

Ping ::1

Trace 0.0.::1

Ping 127.0.0.1

Ping 0.0.0.0

You find that one of the serial interfaces on your router is not forwarding traffic. You have given “show ip interfaces” command. In the response, you observed the following entries against that interface:

Serial 0 is up, line protocol is down. What is the likely problem?

There is a problem with the route both at physical and protocol layers

The link was administratively down

There is a problem exchanging the routing information

There is a problem at physical layer

An administrator issues the command “ping 127.0.0.1″ from the command line prompt on a PC host named PC1. If an ICMP reply is received, what does this confirm?

The PC host PC1 has the TCP/IP protocol stack correctly installed

The PC host PC1 has connectivity up to Layer 5 of the OSI model

The PC host PC1 has connectivity with a local host

The PC host PC1 has connectivity with a Layer 3 device

Match the following:

1. Segments A. Associated with Data Link Layer

2. Packets B. Associated with Network Layer

3. Frames C. Associated with Transport Layer

1—>A; 2—->B; 3 —>C

1—>C; 2—->B; 3 —>A

1—>C; 2—->A; 3 —>B

1—>A; 2—->C; 3 —>B

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

RARP

ICMP

ARP

BootP

Which one of the following is a Class C IP address?

135.23.112.57

10.10.14.118

204.67.118.54

191.200.199.199

A default Frame Relay WAN is classified as what type of physicalnetwork?

broadcast point-to-multipoint

nonbroadcast multipoint

nonbroadcast multi-access

broadcast multi-access

How should a router that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates?

Configure a single sub-interface to establish multiple PVCconnections to multiple remote router interfaces

Configure a separate sub-interface for each PVC with a unique DLCI and subnet assigned to the sub-interface

Configure many sub-interfaces on the same subnet

Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic

After carefully examining the network diagram above, select the correct statement regarding broadcast and collision domains:

There are two broadcast domains and 12 collision domains.

There is one broadcast domain and seven collision domains.

There are two broadcast domains and seven collision domains.

There are two broadcast domains and five collision domains.

Which of the following commands is used to verify the encapsulation type on a frame relay link?

show interfaces

show frame-relay map

show frame-relay pvc

show frame
-relay lmi

What range of addresses can be used in the first octet of a Class B network address?

1-126

1-127

128-190

128-191

Two sub layers of OSI Data Link layer are which of the following?

Data Link Control, Physical Layer Control

Logical Link Control, Media Access Control

Media Access Control, Physical Layer Control

Logical Link Control, Data Link Control

Match the following:

A. Repeaters 1. Data Link Layer

B. Bridges 2. Network Layer

C. Routers 3. Physical Layer

A —>2, B—>3, C—>1

A—>3, B—->1, C—->2

A—>3, B—–>2, C—->1

A—->1, B—->2, C—->3

An administrator issues the command “ping 127.0.0.1″ from the command line prompt on a PC host named PC1. If an ICMP reply is received, what does this confirm?

The PC host PC1 has the TCP/IP protocol stack correctly installed

The PC host PC1 has a default gateway correctly configured

The PC host PC1 has a default gateway correctly

The PC host PC1 has connectivity with a Layer 3 device

The PC host PC1 has connectivity with a local host

What would the result be when the following commands are executed on a Cisco Catalyst switch:

TechTarget-SW1 (config-if)# switchport port-security
TechTarget-SW1 (config-if)# switchport port-security mac-address sticky

The MAC address learned dynamically is saved permanently in the VLAN database.

The first MAC address “seen” on the specific port is allowed to access the network until the port-security timer expires

The MAC address learned dynamically is saved in the switch’s startup-configuration.

The command frame-relay map ip 10.126.16.9 102 broadcast was entered on the router.Which of the following statements is true concerning this command?

This command should be executed from the global configuration mode.

The IP address 10.121.16.8 is the local router port used to forward data.

102 is the remote DLCI that will receive the information.

This command is required for all Frame Relay configurations.

The broadcast option allows packets, such as RIP updates, to be forwarded across the PVC.