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WorksheetsComputer Networks MCQs
Total questions: 66
Worksheet time: 33mins
The IETF standards documents are called ________
RFC
RCF
ID
DFC
In the layer hierarchy as the data packet moves from the upper to the lower layers, headers are ___________
Added
Removed
Rearranged
Modified
The structure or format of data is called ___________
Syntax
Semantics
Struct
Formatting
Communication between a computer and a keyboard involves ______________ transmission.
Automatic
Half-duplex
Full-duplex
Simplex
The first Network was called ________
CNNET
NSFNET
ASAPNET
ARPANET
A _______ is the physical path over which a message travels.
Path
Medium
Protocol
Route
Which organization has authority over interstate and international commerce in the communications field?
ITU-T
IEEE
FCC
ISOC
Which of this is not a network edge device?
PC
Smartphones
Servers
Switch
A _________ set of rules that governs data communication.
Protocols
Standards
RFCs
Servers
Three or more devices share a link in ________ connection.
Unipoint
Multipoint
Point to point
Simplex
When collection of various computers seems a single coherent system to its client, then it is called _________
computer network
distributed system
networking system
mail system
Two devices are in network if __________
a process in one device is able to exchange information with a process in another device
a process is running on both devices
PIDs of the processes running of different devices are same
a process is active and another is inactive
Which of the following computer networks is built on the top of another network?
prior network
chief network
prime network
overlay network
In computer network nodes are _________
the computer that originates the data
the computer that routes the data
the computer that terminates the data
all of the mentioned
Communication channel is shared by all the machines on the network in ________
broadcast network
unicast network
multicast network
anycast network
Bluetooth is an example of __________
personal area network
local area network
virtual private network
wide area network
A __________ is a device that forwards packets between networks by processing the routing information included in the packet.
bridge
firewall
router
hub
A list of protocols used by a system, one protocol per layer, is called ________
protocol architecture
protocol stack
protocol suite
protocol system
Network congestion occurs _________
in case of traffic overloading
when a system terminates
when connection between two nodes terminates
in case of transfer failure
Which of the following networks extends a private network across public networks?
local area network
virtual private network
enterprise private network
storage area network
Which of this is not a constituent of residential telephone line?
A high-speed downstream channel
A medium-speed downstream channel
A low-speed downstream channel
An ultra-high speed downstream channel
DSL telcos provide which of the following services?
Wired phone access
ISP
Wired phone access and ISP
Network routing and ISP
The function of DSLAM is to __________
Convert analog signals into digital signals
Convert digital signals into analog signals
Amplify digital signals
De-amplify digital signals
Which of the following terms is not associated with DSL?
DSLAM
CO
Splitter
CMTS
Which of the following terms is not associated with DSL?
DSLAM
CO
Splitter
CMTS
HFC contains _______
Fibre cable
Coaxial cable
A combination of Fibre cable and Coaxial cable
Twisted Pair Cable
Which of the following statements is not applicable for cable internet access?
It is a shared broadcast medium
It includes HFCs
Cable modem connects home PC to Ethernet port
Analog signal is converted to digital signal in DSLAM
Among the optical-distribution architectures that are essentially switched ethernet is __________
AON
PON
NON
MON
StarBand provides __________
FTTH internet access
Cable access
Telephone access
Satellite access
Home Access is provided by __________
DSL
FTTP
Cable
All of the mentioned
ONT is connected to splitter using _________
High speed fibre cable
HFC
Optical cable
Twisted pair cable
Which of the following factors affect transmission rate in DSL?
The gauge of the twisted-pair line
Degree of electrical interfernece
Shadow fading
The gauge of the twisted-pair line and degree of electrical interference
How many layers are present in the Internet protocol stack (TCP/IP model)?
5
7
6
10
The number of layers in ISO OSI reference model is __________
5
7
6
10
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 layer
Application layer is implemented in ____________
End system
NIC
Ethernet
Packet transport
Transport layer is implemented in ______________
End system
NIC
Ethernet
Signal transmission
The functionalities of the presentation layer include ____________
Data compression
Data encryption
Data description
All of the mentioned
Delimiting and synchronization of data exchange is provided by __________
Application layer
Session layer
Transport layer
Link layer
In OSI model, when data is sent from device A to device B, the 5th layer to receive data at B is _________
Application layer
Transport layer
Link layer
Session layer
In TCP IP Model, when data is sent from device A to device B, the 5th layer to receive data at B is ____________
Application layer
Transport layer
Link layer
Session layer
In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______
Added
Removed
Rearranged
Randomized
Which of the following statements can be associated with OSI model?
A structured way to discuss and easier update system components
One layer may duplicate lower layer functionality
Functionality at one layer no way requires information from another layer
It is an application specific network model
OSI stands for __________
open system interconnection
operating system interface
optical service implementation
open service Internet
The number of layers in ISO OSI reference model is __________
4
5
6
7
TCP/IP model does not have ______ layer but OSI model have this layer.
session layer
transport layer
application layer
network layer
Which layer is used to link the network support layers and user support layers?
session layer
data link layer
transport layer
network layer
Which address is used on the internet for employing the TCP/IP protocols?
physical address and logical address
port address
specific address
all of the mentioned
TCP/IP model was developed _____ the OSI model.
prior to
after
simultaneous to
with no link to
Which layer is responsible for process to process delivery in a general network model?
network layer
transport layer
session layer
data link layer
Which address is used to identify a process on a host by the transport layer?
physical address
logical address
port address
specific address
Which layer provides the services to user?
application layer
session layer
presentation layer
physical layer
Transmission data rate is decided by ____________
network layer
physical layer
data link layer
transport layer
The physical layer is concerned with ___________
bit-by-bit delivery
process to process delivery
application to application delivery
port to port delivery
Which transmission media provides the highest transmission speed in a network?
coaxial cable
twisted pair cable
optical fiber
electrical cable
Bits can be sent over guided and unguided media as analog signal by ___________
digital modulation
amplitude modulation
frequency modulation
phase modulation
The portion of physical layer that interfaces with the media access control sublayer is called ___________
physical signalling sublayer
physical data sublayer
physical address sublayer
physical transport sublayer
The physical layer provides __________
mechanical specifications of electrical connectors and cables
electrical specification of transmission line signal level
specification for IR over optical fiber
all of the mentioned
In asynchronous serial communication the physical layer provides ___________
start and stop signalling
flow control
both start & stop signalling and flow control
only start signalling
The physical layer is responsible for __________
line coding
channel coding
modulation
all of the mentioned
The physical layer translates logical communication requests from the ______ into hardware specific operations.
data link layer
network layer
transport layer
application layer
A single channel is shared by multiple signals by ____________
analog modulation
digital modulation
multiplexing
phase modulation
Wireless transmission of signals can be done via ___________
radio waves
microwaves
infrared
all of the mentioned
The data link layer takes the packets from _________ and encapsulates them into frames for transmission.
network layer
physical layer
transport layer
application layer
Which of the following tasks is not done by data link layer?
framing
error control
flow control
channel coding
Which sublayer of the data link layer performs data link functions that depend upon the type of medium?
logical link control sublayer
media access control sublayer
network interface control sublayer
error control sublayer
