MCQ's on Data Communication & Networks

MCQ 1:
Frames from one LAN can be transmitted to another LAN via the device

Router
Bridge
Repeater
Modem

MCQ 2:
Which of the following condition is used to transmit two packets over a medium at the same time?

Contention
Collision
Synchronous
Asynchronous

MCQ 3:
Bluetooth is an example of ______________________.

personal area network
local area network
virtual private network
wide area network

MCQ 4:
What is the default subnet mask for a class C network?

127.0.0.1
255.0.0.0
255.255.0.0
255.255.255.0

MCQ 5:
How many hosts are attached to each of the local area networks at your site?

128
64
256
254

MCQ 6:
The physical layer is concerned with ______________.

bit-by-bit delivery
process to process delivery
application to application delivery
port to port delivery

MCQ 7:
Which of the following device is used to connect two systems, especially if the systems use different protocols?

Hub
Bridge
Gateway
Repeater

MCQ 8:
Transport layer is implemented in __________________.

End system
NIC
Ethernet
Packet transport

MCQ 9:
A remote batch-processing operation in which data is solely input to a central computer would require a

telegraph line
simplex lines
mixedband channel
All of the above

MCQ 10:
What is Unicode?

Represents symbol or characters used in any language
Only few languages are supported
Supports only few characters
Characters from A to Z

MCQ 11:
For data communications to occur, the communicating devices must be part of a communication system made up of a combination of?

WAN and LAN
Hardware and software
Full duplex and half duplex
All of the above

MCQ 12:
Data communications system depends on fundamental characteristics.

receiver
Sender
Timeliness
Medium

MCQ 13:
What are the 4 fundamental characteristics of a data communication

Receiver, Sender, Timeliness and Jitter
Receiver, Sender, Jitter and Medium
Delivery, Sender, Timeliness and Jitter
Delivery, Accuracy, Timeliness and Jitter

MCQ 14:
A data communications system has how many components

4
5
6
8

MCQ 15:
Select the correct cable that transport signals in the form of light

Twisted Pair Cable
Fiber Optic Cable
Coaxial Cable
Shielded Twisted Pair Cable

MCQ 16:
Twisted pair wires, coaxial cable, optical fiber cables are the examples of.

Wired Media
Wireless Media
Both A & B
None of the above

MCQ 17:
Header of a frame generally contains ______________.

synchronization bytes
addresses
frame identifier
All of the above

MCQ 18:
CRC stands for _______________.

cyclic redundancy check
code repeat check
code redundancy check
cyclic repeat check

MCQ 19:
Which of the following is a data link protocol?

Ethernet
Point to point protocol
HDLC
All of the above

MCQ 20:
The network layer is concerned with ______________ of data

bits
frames
packets
bytes

MCQ 21:
Network layer firewall works as a _______________.

Frame filter
Packet filter
Content filter
Virus filter

MCQ 22:
A proxy firewall filters at _______________.

Physical layer
Data link layer
Network layer
Application layer

MCQ 23:
A packet filter firewall filters at _______________.

Physical layer
Data link layer
Network layer or Transport layer
Application layer

MCQ 24:
Which one of the following is not a function of network layer?

Routing
Inter-networking
Congestion control
Error control

MCQ 25:
A 4 byte IP address consists of _______________.

only network address
only host address
network address & host address
network address & MAC address

MCQ 26:
Which of the following routing algorithms can be used for network layer design?

shortest path algorithm
distance vector routing
link state routing
All of the above

MCQ 27:
Which network topology requires a central controller or hub?

Star
Mesh
Ring
Bus

MCQ 28:
_________________ topology requires a multipoint connection.

Star
Star
Ring
Bus

MCQ 29:
Data communication system spanning states, countries, or the whole world is ______________

LAN
WAN
MAN
PAN

MCQ 30:
Data communication system within a building or campus is___________________

LAN
WAN
MAN
PAN

MCQ 31:
WAN stands for ________________

World area network
Wide area network
Web area network
Web access network

MCQ 32:
Which of this is not a guided media?

Fiber optical cable
Coaxial cable
Wireless LAN
Copper wire

MCQ 33:
The HTTP request message is sent in ________________ part of three-way handshake

First
Second
Third
Fourth

MCQ 34:
In TCP, sending and receiving data is done as _______

Stream of bytes
Sequence of characters
Lines of data
Packets

MCQ 35:
Communication offered by TCP is _______

Full-duplex
Half-duplex
Semi-duplex
Byte by byte

MCQ 36:
FTP is built on _____ architecture.

Client-server
P2P
Data centric
Service oriented

MCQ 37:
Identify the incorrect statement regarding FTP.

FTP stands for File Transfer Protocol
FTP uses two parallel TCP connections
FTP sends its control information in-band
FTP sends exactly one file over the data connection

MCQ 38:
The size of an IP address in IPv6 is _________

4 bytes
128 bits
8 bytes
100 bits

MCQ 39:
Which among the following features is present in IPv6 but not in IPv4?

Fragmentation
Header checksum
Options
Anycast address

MCQ 40:
Which of this is not a class of IP address?

Class E
Class C
Class D
Class F

MCQ 41:
Which of the following are transport layer protocols used in networking?

TCP and FTP
UDP and HTTP
TCP and UDP
HTTP and FTP

MCQ 42:
A _______________ is a TCP name for a transport service access point.

port
pipe
node
protocol

MCQ 43:
A _________________ is a device that forwards packets between networks by processing the routing information included in the packet.

bridge
firewall
router
HUB

MCQ 44:
The number of layers in ISO OSI reference model is _______________.

6
7
8
5

MCQ 45:
Which of the following layers is an addition to OSI model when compared with TCP IP model?

Application layer
Presentation layer
Session layer
Session and Presentation laye

MCQ 46:
Application layer is implemented in _________________.

End system
NIC
Ethernet
Packet transport

MCQ 47:
ATM and frame relay are ________________.

virtual circuit networks
datagram networks
virtual private networks
virtual public networks

MCQ 48:
An interconnected collection of piconet is called __________________.

scatternet
micronet
mininet
multinet

MCQ 49:
Which of the following is false with respect to TCP?

Connection-oriented
Process-to-process
Transport layer protocol
Unreliable

MCQ 50:
Bluetooth is the wireless technology for _______________.

local area network
personal area network
metropolitan area network
wide area network

MCQ 51:
Which of the following tasks is not done by data link layer?

framing
error control
flow control
channel coding