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Networking - Quiz(MCQ)
1 .
Which one of the following is true regarding VLANs?
A)
Two VLANs are configured by default on all Cisco switches.
B)
You should not have more than 10 switches in the same VTP domain.
C)
VTP is used to send VLAN information to switches in a configured VTP domain.
D)
VLANs only work if you have a complete Cisco switched internetwork. No off-brand switches are allowed.

Correct Answer : Option (C) :   VTP is used to send VLAN information to switches in a configured VTP domain.

Explanation : Switches do not propagate VLAN information by default; you must configure the VTP domain. VLAN Trunking Protocol (VTP) is used to propagate VLAN information across a trunk link.

2 .
How many collision domains are created when you segment a network with a 12-port switch?
A)
12
B)
10
C)
8
D)
6

Correct Answer : Option (A) :   12

Explanation : Layer 2 switching creates individual collision domains.

3 .
What command will display the line, protocol, DLCI, and LMI information of an interface?
A)
sh pvc
B)
show interface
C)
show run
D)
show frame-relay pvc

Correct Answer : Option (B) :   show interface

Explanation : The show interface command shows the line, protocol, DLCI, and LMI information of an interface.

4 .
Which protocol does Ping use?
A)
TCP
B)
ICMP
C)
ARP
D)
BootP

Correct Answer : Option (B) :   ICMP

Explanation : ICMP is the protocol at the Network layer that is used to send echo requests and replies.

5 .
How many layers are present in the Internet protocol stack (TCP/IP model)?
A)
10
B)
8
C)
6
D)
5

Correct Answer : Option (D) :   5

Explanation : There are five layers in the Internet Protocol stack. The five layers in Internet Protocol stack is Application, Transport, Network, Data link and Physical layer. The internet protocol stack model is also called the TCP/IP model and it’s used in modern Internet Communication.

6 .
The number of layers in ISO OSI reference model is ______
A)
5
B)
6
C)
7
D)
10

Correct Answer : Option (C) :   7

Explanation : The seven layers in ISO OSI reference model is Application, Presentation, Session, Transport, Network, Data link and Physical layer. OSI stands for Open System Interconnect and it is a generalized model.

7 .
Which of the following layers is an addition to OSI model when compared with TCP IP model?
A)
Session layer
B)
Application layer
C)
Presentation layer
D)
Session and Presentation layer

Correct Answer : Option (D) :   Session and Presentation layer

Explanation : The only difference between OSI model and TCP/IP model is that the functions of Presentation and Session layer in the OSI model are handled by the transport layer itself in TCP/IP. OSI is a generalized model and TCP/IP is an application specific model.

8 .
Application layer is implemented in ______
A)
End system
B)
NIC
C)
Ethernet
D)
Packet transport

Correct Answer : Option (A) :   End system

Explanation : Not only application layer, but presentation layer, session layer and transport layer are also implemented in the end system. The layers below are implemented outside the end system, for example, the network layer is implemented on the routers and the physical layer is implemented for the medium.

9 .
Transport layer is implemented in _______
A)
NIC
B)
End system
C)
Ethernet
D)
Signal Transmission

Correct Answer : Option (B) :   End system

Explanation : Application, Presentation, Session and Transport layer are implemented in the end system. The transport layer handles the process to process delivery of the packet through ports.

10 .
In OSI model, when data is sent from device A to device B, the 5th layer to receive data at B is _____
A)
Link layer
B)
Transport layer
C)
Session layer
D)
Application layer

Correct Answer : Option (C) :   Session layer

Explanation : In OSI reference model, the fifth layer is Session layer. Session layer provides the mechanism for opening, closing and managing a session between end-user application processes. In TCP/IP protocol stack, the functions of the session layer are handled by the transport layer itself and thus the session layer is missing from the TCP/IP model.