Networking
Networking MCQ form Nirali Prakashan Book
Chapter 1 : Introduction to Computer Network
1.
Which topology requires a central controller or hub?
A)
Star
B)
Mesh
C)
Bus
D)
Ring
Answer:
A) Star
2.
Which topology requires a multipoint connection?
A)
Mesh
B)
Star
C)
Ring
D)
Bus
Answer:
C) Ring
3.
Which of the following is Not a Key element of a protocol?
A)
Semantics
B)
Signal
C)
Syntax
D)
Timing
Answer:
B) Signal
4.
In a network with 25 computers, which topology would require the most extensive
cabling?
A)
Star
B)
Mesh
C)
Bus
D)
Ring
Answer: B) Mesh
5.
In a _____ connection, more than two devices can share a single link.
A)
Point-to-Point
B)
Primary
C)
Multipoint
D)
Secondary
Answer:
C) Multipoint
6.
Which of the following topology is most susceptible to failure following a
cable break?
A)
Star
B)
Mesh
C)
Bus
D)
Tree
Answer:
C) Bus
7.
Communication channel is shared by all the machines on the network in ____.
A)
Broadcast network
B)
Unicast network
C)
Multicast Network
D)
None of the mentioned
Answer:
A) Broadcast network
8.
____ is the technology that connects the machines and people within a site in a
small area.
A)
LAN
B)
MAN
C)
WAN
D)
None of these
Answer:
A) LAN
9.
_____ is a network that covers geographic areas that are larger, such as
districts or cities.
A)
LAN
B)
MAN
C)
WAN
D)
None of these
Answer:
B) MAN
Chapter 2 : Network Models
1.
Which layer of the OSI reference model corresponds to the IP protocol of the
TCP/IP protocol Stack?
A)
Transport
B)
Network
C)
Internet
D)
Data Link
Answer:
B) Network
2.
The entities in the same layer on different machines are called_____.
A)
Hosts
B)
Peers
C)
Protocols
D)
IMP’s
Answer:
B) Peers
3.
As the data packet moves from the lower to the upper layers, headers are
______.
A)
Added
B)
Rearranged
C)
Modified
D)
Subtracted
Answer:
D) Subtracted
4.
As the data packet moves from the lower tot the upper layer, headers are
______.
A)
IP
B)
FTP
C)
UDP
D)
ICMP
Answer:
C) UDP
5.
What is the main function of the transport layer?
A)
Process-to-process delivery
B)
Note-to-node delivery
C)
Synchronization
D)
Updating and maintenance of routing tables
Answer:
A) Process-to-process delivery
6.
Which of the following device operates at the network layer of the OSI Model?
A)
Repeater
B)
Router
C)
Bridge
D)
Hub
Answer:
B) Router
7.
The length of an IP address if IPv4 is ____ bits.
A)
46
B)
32
C)
16
D)
64
Answer:
B) 32
8.
Which of the following is a NOT an Internet layer protocol in the TCP/IP stack?
A)
IP
B)
UDP
C)
ARP
D)
ICMP
Answer:
B) UDP
9.
The OSI model has ____ layers.
A)
4
B)
5
C)
6
D)
7
Answer:
D) 7
10.
TCP/IP model does not have _____ layer but OSI model have this layer.
A)
session layer
B)
presentation layer
C)
application layer
D)
both (a) and (b)
Answer:
D) both (a) and (b)
11.
Which layer links the network support layer and user support layers
A)
session layer
B)
data link layer
C)
transport layer
D)
network layer
Answer:
C) transport layer
12.
Which address is used in an internet employing the TCP/IP protocols?
A)
Physical address and logical address
B)
Port address
C)
specific address
D)
all of the mentioned
Answer:
D) all of the mentioned
13.
TCP/IP model was developed _____ the OSI model.
A)
prior to
B)
after
C)
simultaneous to
D)
none of the mentioned
Answer:
A) prior to
14.
Which layer is responsible for process to process delivery?
A)
network layer
B)
Transport layer
C)
session Layer
D)
data link Layer
Answer:
B) Transport layer
15.
Which address identifies a process on a host?
A)
physical address
B)
logical address
C)
port address
D)
specific address
Answer:
C) port address
16.
Which layer provides the services to user?
A)
application layer
B)
session layer
C)
presentation layer
D)
none of the mentioned
Answer:
A) application layer
17.
Transmission data rate is decided by _____.
A)
network layer
B)
physical layer
C)
data link layer
D)
transport layer
Answer:
B) physical layer
18.
The physical layer concern with _____.
A)
bit-by-bit delivery
B)
process to process delivery
C)
application to application delivery
D)
none of the mentioned
Answer:
A) bit-by-bit delivery
Chapter 3 : Transmission Media
1.
BNC stands for _____
A)
Bayonet Neill-Concelman
B)
Boys Net-Concelman
C)
Bayonet Neill-Connector
D)
Bayonet Network-Concelman
Answer:
A) Bayonet Neill-Concelman
2.
The “RJ” in RJ45 stands for ______
A)
Resistance Jet
B)
Registered Jack
C)
Routing Jack
D)
Fiber Optic
Answer:
B) Registered Jack
3.
Which of following is not Unguided Media?
A)
Microwaves
B)
Radio Waves
C)
Ifrared
D)
Fiber Optic
Answer:
D) Fiber Optic
4.
________ cables carry data signals in the form of Light.
A)
Coaxial
B)
Fiber Optic
C)
Twisted Pair
D)
None of these
Answer:
B) Fiber Optic
5.
____ Cables consists of two insulated copper wire twisted together.
A)
Coaxial
B)
Fiber optic
C)
Twisted Pair
D)
One of these
Answer:
C) Twisted Pair
6.
_______ cable consists of an inner copper core and a second conducting outer
sheath.
A)
Twisted-pair
B)
Coaxial
C)
Fiber-optic
D)
Shielded twisted-pair
Answer:
D) Shielded twisted-pair
7.
In fiber optics, the signal is _____.
A)
Light
B)
Radio
C)
Infrared
D)
Very low-frequency Waves.
Answer:
A) Light
8.
Signals with a frequency between 2 MHz and 30 MHz use_____ propagation.
A)
ground
B)
Sky
C)
line-of-sight
D)
none of the above
Answer:
B) Sky
9.
A parabolic dish antenna is a(n) ______ antenna.
A)
omnidirectional
B)
bidirectional
C)
unidirectional
D)
horn
Answer:
C) unidirectional
10.
Which of the following is not a guided medium?
A)
twisted-pair cable
B)
coaxial cable
C)
fiber-optic cable
D)
atmosphere
Answer:
D) atmosphere
Chapter 4 : Wired and Wireless LAN
1.
Ethernet frame consists of _______
A)
MAC address
B)
IP address
C)
Default Mask
D)
Network Address
Answer:
A) MAC address
2.
MAC address is of ______.
A)
24 bits
B)
36 bits
C)
42 bits
D)
48 bits
Answer:
D) 48 bits
3.
In a backbone, the _____ backbone is a just switch.
A)
bus
B)
ring
C)
star
D)
mesh
Answer:
C) star
4.
An interconnected collection of Piconet is called _____
A)
Scatternet
B)
Micronet
C)
Mininet
D)
Multinet
Answer:
A) Scatternet
5.
Bluetooth is the wireless technology for ________
A)
Local area Network
B)
personal area network
C)
Metropolitan Area Network
D)
Wide area Network
Answer:
B) personal area network
Chapter 5 : Network Devices
1. __________ called Network layer device.
A)
Router
B)
Gateway
C)
Bridge
D)
Switch
Answer:
A) Router
2.
_________ device is not amplified the signal.
A)
Router
B)
Gateway
C)
Bridge
D)
Switch
Answer:
B) Gateway
3.
The device that provides a central connection point for cables is _________
A)
Router
B)
Gateway
C)
HUB
D)
Switch
Answer:
C) HUB
4.
Which networking device connects one LAN to other LAN using same protocol.
A)
Router
B)
Gateway
C)
HUB
D)
Switch
Answer:
D) Switch
5. __________ device is called intelligent
device in networking.
A)
Router
B)
Gateway
C)
HUB
D)
Switch
Answer:
A) Router
Chapter 6 : Network Security
1.
The _______ is the original message before transformation.
A)
Ciphertext
B)
Plaintext
C)
Secret-text
D)
none of the above
Answer:
B) Plaintext
2.
In an asymmetric-key cipher, the sender uses the ____ key.
A)
Private
B)
Public
C)
Either (a) and (b)
D)
neither (a) nor (b)
Answer:
B) Public
3.
A combination of an encryption algorithm and a decryption algorithm is called a
_____
A)
cipher
B)
secret
C)
key
D)
none of the above
Answer:
A) cipher
4.
Proxy firewall filters ______.
A)
physical layer
B)
data-link layer
C)
network layer
D)
application layer
Answer:
D) application layer
5.
Technically, ________ is specialized version of a router.
A)
Firewall
B)
Bridge
C)
Gateway
D)
Modem
Answer:
A) Firewall
Reviewed by technical_saurabh
on
June 26, 2021
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