Unit 2 : Network Models
Q.1. In the layer
hierarchy as the data packet moves from the upper to the lower layers, headers
are ___________
1.
Added
2.
Removed
3.
Rearranged
4.
Modified
Answer:- (1)
Q.2. The structure or
format of data is called ___________
1.
Syntax
2.
Semantics
3.
Struct
4.
Formatting
Answer:- (1)
Q.3. Communication
between a computer and a keyboard involves ______________ transmission.
1.
Automatic
2.
Half-duplex
3.
Full-duplex
4.
Simplex
Answer:- (4)
Q.4. The first Network
was called ________
1.
CNNET
2.
NSFNET
3.
ASAPNET
4.
ARPANET
Answer:- (4)
Q.5. A _________ set of rules that governs data
communication.
1.
Protocols
2.
Standards
3.
RFCs
4.
Servers
Answer:- (1)
Q.6. In computer network nodes are _________
1.
the computer
that originates the data
2.
the computer
that routes the data
3.
the computer
that terminates the data
4.
all of the
mentioned
Answer:- (4)
Q.7. Communication
channel is shared by all the machines on the network in ________
1.
broadcast
network
2.
unicast network
3.
multicast
network
4.
anycast network
Answer:- (1)
Q.8. A __________ is a
device that forwards packets between networks by processing the routing
information included in the packet.
1.
bridge
2.
firewall
3.
router
4.
hub
Answer:- (3)
Q.9. Network congestion
occurs _________
1.
in case of
traffic overloading
2.
when a system
terminates
3.
when connection
between two nodes terminates
4.
in case of
transfer failure
Answer:- (1)
Q.10. Which of the
following networks extends a private network across public networks?
1.
local area
network
2.
virtual private
network
3.
enterprise private
network
4.
storage area
network
Answer:- (2)
Q.11. How many layers are present in the Internet
protocol stack (TCP/IP model)?
1.
5
2.
7
3.
6
4.
10
Answer:- (1)
Q.12. The number of
layers in ISO OSI reference model is __________
1.
5
2.
7
3.
6
4.
10
Answer:- (2)
Q.13. Which of the
following layers is an addition to OSI model when compared with TCP IP model?
1.
Application
layer
2.
Presentation
layer
3.
Session layer
4.
Session and
Presentation layer
Answer:- (4)
Q.14. The
functionalities of the presentation layer include ____________
1.
Data compression
2.
Data encryption
3.
Data description
4.
All of the
mentioned
Answer:- (4)
Q.15. Delimiting and synchronization of data
exchange is provided by __________
1.
Application
layer
2.
Session layer
3.
Transport layer
4.
Link layer
Answer:- (2)
Q.16. In OSI model,
when data is sent from device A to device B, the 5th layer to receive data at B
is _________
1.
Application
layer
2.
Transport layer
3.
Link layer
4.
Session layer
Answer:- (4)
Q.17. In TCP IP Model,
when data is sent from device A to device B, the 5th layer to receive data at B
is ____________
1.
Application
layer
2.
Transport layer
3.
Link layer
4.
Session layer
Answer:- (1)
Q.18. Which layer is
used to link the network support layers and user support layers?
1.
session layer
2.
data link layer
3.
transport layer
4.
network layer
Answer:- (3)
Q.19. Transmission data
rate is decided by ____________
1.
network layer
2.
physical layer
3.
data link layer
4.
transport layer
Answer:- (2)
Q.20. OSI stands for
__________
1.
open system
interconnection
2.
operating system
interface
3.
optical service
implementation
4.
open service
Internet
Answer:- (1)
Q.21. The physical
layer translates logical communication requests from the ______ into hardware
specific operations.
1.
data link layer
2.
network layer
3.
transport layer
4.
application
layer
Answer:- (1)
Q.22. A single channel
is shared by multiple signals by ____________
1.
analog
modulation
2.
digital
modulation
3.
multiplexing
4.
phase modulation
Answer:- (3)
Q.23. Wireless
transmission of signals can be done via ___________
1.
radio waves
2.
microwaves
3.
infrared
4.
all of the
mentioned
Answer:- (4)
Q.24. CRC stands for
__________
1.
cyclic
redundancy check
2.
code repeat
check
3.
code redundancy
check
4.
cyclic repeat
check
Answer:- (1)
Q.25. Which one of the following is not a function
of network layer?
1.
routing
2.
inter-networking
3.
congestion
control
4.
error control
Answer:- (4)
Q.26. Which one of the
following algorithm is not used for congestion control?
1.
traffic aware
routing
2.
admission
control
3.
load shedding
4.
routing
information protocol
Answer:- (4)
Q.27. ICMP is primarily
used for __________
1.
error and
diagnostic functions
2.
addressing
3.
forwarding
4.
routing
Answer:- (1)
Q.28. Which of the
following are transport layer protocols used in networking?
1.
TCP and FTP
2.
UDP and HTTP
3.
TCP and UDP
4.
HTTP and FTP
Answer:- (3)
Q.29. Which one of the
following is a version of UDP with congestion control?
1.
datagram
congestion control protocol
2.
stream control
transmission protocol
3.
structured
stream transport
4.
user congestion
control protocol
Answer:- (1)
Q.30. Which of the following
is a transport layer protocol?
1.
stream control
transmission protocol
2.
internet control
message protocol
3.
neighbour
discovery protocol
4.
dynamic host
configuration protocol
Answer:- (1)
Q.31. _____ is the
multiplexing technique that shifts each signal to a different carrier
frequency.
1.
FDM
2.
TDM
3.
Both FDM &
TDM
4.
PDM
Answer:- (1)
Q.32. If link transmits
4000frames per second, and each slot has 8 bits, the transmission rate of
circuit this TDM is _________
1.
32kbps
2.
500bps
3.
500kbps
4.
32bps
Answer:- (1)
Q.33. If there are n
signal sources of same data rate, then the TDM link has _______ slots.
1.
n
2.
n/2
3.
n*2
4.
2n
Answer:- (1)
Q.34. The state when
dedicated signals are idle are called __________
1.
Death period
2.
Poison period
3.
Silent period
4.
Stop period
Answer:- (3)
Q.35. In TDM, slots are
further divided into _________
1.
Seconds
2.
Frames
3.
Packets
4.
Bits
Answer:- (2)
Q.36. In TDM, the
transmission rate of a multiplexed path is always _______ the sum of the
transmission rates of the signal sources.
1.
Greater than
2.
Lesser than
3.
Equal to
4.
Equal to or
greater than
Answer:- (1)
Q.37. The time required
to examine the packet’s header and determine where to direct the packet is part
of __________
1.
Processing delay
2.
Queuing delay
3.
Transmission
delay
4.
Propagation
delay
Answer:- (1)
Q.38. Transmission
delay does not depend on _____________
1.
Packet length
2.
Distance between
the routers
3.
Transmission
rate
4.
Bandwidth of
medium
Answer:- (2)
Q.39. Propagation delay
depends on ___________
1.
Packet length
2.
Transmission
rate
3.
Distance between
the routers
4.
Speed of the CPU
Answer:- (3)
Q.40. Which of the
following delay is faced by the packet in travelling from one end system to
another?
1.
Propagation
delay
2.
Queuing delay
3.
Transmission
delay
4.
All of the
mentioned
Answer:- (4)
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