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CS8591-Computer Networks

Total questions: 45

Worksheet time: 45mins

Name
Class
Date
1.

Which of these is a standard interface for serial data transmission?

a)

ASCII

b)

RS232C

c)

2

d)

Centronics

2.

Which type of topology is best suited for large business which must carefully control & coordinate the operation of distributed branch outlets?

a)

Ring

b)

Tree

c)

Mesh

d)

Star

3.

Which of the following transmission directions listed is not a legitimate channel?

a)

simplex

b)

half duplex

c)

full duplex

d)

double duplex

4.

parity bits are used for

a)

encryption of data

b)

To transmit faster

c)

to detect errors

d)

to identify the users

5.

What kind of transmission medium is most suitable to carry data in a computer network that is exposed to electrical interference?

a)

unshielded twisted pair

b)

optical fiber

c)

coaxial cable

d)

microwave

6.

A collection of hyperlinked documents on the internet forms?

a)

WWW

b)

E-mail

c)

Mailing list

d)

HTML

7.

The location of resource on the internet is given by its

a)

protocol

b)

URL

c)

E-mail

d)

ICQ

8.

The term HTTP stands for?

a)

Hyper terminal tracing program

b)

Hypertext tracing protocol

c)

Hypertext transfer program

d)

Hypertext transfer protocol

9.

Which one of the following would breach the integrity of a system?

a)

Looking the room to prevent theft

b)

Full access rights for all users

c)

Fitting the system with an anti-theft device

d)

Protecting the device against willful or accidental damage

10.

Which software prevents the external access to a system?

a)

Firewall

b)

Gateway

c)

Router

d)

Virus checker

11.

Which one of the following is the most common internet protocol?

a)

HTML

b)

NetBEUI

c)

TCP/IP

d)

IPX/SPX

12.
Provides a connection oriented reliable service for sending messages
a)
TCP
b)
UDP
c)
IP
d)
All of the above
13.
Which of the following layer is called as end to end layer ?
a)
Physical Layer
b)
Datalink Layer
c)
Network Layer
d)
Transport Layer
14.
What is the meaning of bandwidth in network?
a)
Transmission capacity for communication channel
b)
Connected computers in the network
c)
Class of IP used in Network
d)
None of the above
15.
Which of the following layer does error checking of data ? 
a)
Data Link Layer
b)
Network Layer
c)
Physical Layer
d)
Transport Layer
16.
The physical layer is responsible for the transmission of __  over the physical medium
a)
Packets
b)
bits
c)
message
d)
segment
e)
all of the above
17.
A device that can convert digital signals to analog
a)
A packet
b)
A modem
c)
An emulator
d)
None of the above
18.

----------------is a connectionless Protocol

a)

TCP

b)

UDP

19.

Ø ---------- policies are applied to prevent congestion before it happens .

a)

Closed loop congestion control policies

b)

Open loop congestion control policies

c)

implicit Signalling

d)

Explicit Signalling

20.
What type of network is this?
a)
Star
b)
Bus
c)
LAN
d)
WAN
21.
What type of network is this?
a)
Star
b)
Mesh
c)
LAN
d)
WAN
22.

The functionalities of the presentation layer include ____________

a)

Data compression

b)

Data Encryption

c)

Data decryption

d)

All of the mentioned

23.

Delimiting and synchronization of data exchange is provided by __________

a)

Application Layer

b)

Session Layer

c)

Physical Layer

d)

None of the above

24.

In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______

a)

Added

b)

Removed

c)

Rearranged

d)

Randomized

25.

Which of the following transmission media provides the highest transmission speed in a network?

a)

Co axial Cable

b)

Twisted Pair Cable

c)

Fiber Optics

d)

Cable

26.

What is the size of an IP address in IPV4?

a)

128 bit

b)

32 bit

c)

512 bit

d)

64 bit

27.

MAC addresses are also known as?

a)

Hardware Address

b)

Physical Address

c)

IP Address

d)

Both a and b

28.

UDP is an unreliable protocol.

a)

True

b)

False

29.

Which of the IP headers decides when the packet should be

discarded?

a)

Checksum

b)

Header

c)

CRC

d)

TTL

30.

Which of the following is the multiple access protocol for channel access control?

a)

CSMA/CD

b)

CSMA/CA

c)

Both of the Above

d)

HDLC

31.

The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called ____________

a)

Piggybacking

b)

Parity Check

c)

Checksum

d)

None of the above

32.
Unique address  given to each device on the  internet
a)
Media Access Control address
b)
Internet Protocol  address
c)
Data Packets address 
d)
Data Protocol  address
33.
which type of computer on a network provides something such as file space? 
a)
Client
b)
Server
c)
Peer
d)
Node
34.
Which of these is NOT an advantage of networks?
a)
Sharing peripheral devices such as printers and scanners
b)
Possible to communicate globally
c)
Can protect against viruses
d)
PCs can be backed up and updated by one central PC
35.
Which is the correct answer to the below:
"A number of devices that communicate with each other without the need of the internet"
a)
LAN
b)
WAN
c)
TCP/IP
d)
DSL
36.
The industry standard for LANs.
a)
ethernet
b)
P2P
c)
gateway
d)
TCP/IP
37.
The suite of protocols and programs that supports low-level network communication.
a)
HTTP
b)
P2P
c)
gateway
d)
TCP/IP
38.
Transfer files to and from another computer.
a)
HTTP
b)
FTP
c)
MIME type
d)
SMTP
39.
The network protocol that breaks messages into packets, reassembles the packets at the destination, and takes care of errors.
a)
Telnet
b)
TCP
c)
DSL
d)
UDP
40.

Two fundamental VPN technologies are

a)

Security

b)

Encryption

c)

Internet

d)

Tunnelling

41.

Select the functions of protocols

a)

Translate into machine code

b)

Prevent deadlock

c)

Check the speed of data transmission

d)

Manage flow control

42.
What is IP used for?
a)
To send information across the internet in packets
b)
To ensure that information is sent to the correct computer
c)
To send mail across the internet
d)
To transmit webpages across the internet
43.
What are HTTP[S] used for?
a)
To send information across the internet in packets
b)
To ensure that information is sent to the correct computer
c)
To send mail across the internet
d)
To transmit webpages across the internet
44.
Which of these is a disadvantage of the ring topology?
a)
If one cable is disabled the whole network can crash
b)
If the central hub crashes the whole network breaks
c)
Only four computers can be attached to the ring
d)
Everyone has to sit facing each other
45.

The IP network 192.168.50.0 is to be divided into 10 equal sized subnets. Which of the following subnet masks can be used for the above requirement?

a)

255.243.240 .0

b)

255.255.0.0

c)

255.255.0

d)

255.255.255