Computer/Computer Networks MCQs Sample Test,Sample questions

Question:
 In Go-Back-N window, when the timer of the packet times out, several packets have to be resent even some may have arrived safe. Whereas in Selective Repeat window, the sender resends ___________

1.Packet which are not lost

2.Only those packets which are lost or corrupted

3.Packet from starting

4.All the packets


Question:
 ________________ plays an important role in determining the blocking probability of a network.

1.CGA algorithm

2.Semi-pristine environment

3.RWA algorithm

4.Pass key protocol


Question:
A family of network control protocols (NCPs) ____________

1.Are a series of independently defined protocols that provide a dynamic

2.Are a series of independently-defined protocols that encapsulate

3.Are a series of independently defined protocols that provide transparent

4.The same as NFS


Question:
A Link Control Protocol (LCP) is used for ____________

1.Establishing, configuring and testing the data-link connection

2.Establishing and configuring different network-layer protocols

3.Testing the different network-layer protocols

4.Provides for multiplexing of different network-layer protocols


Question:
A list of protocols used by a system, one protocol per layer, is called ________

1.protocol architecture

2.protocol stack

3.protocol suite

4.protocol system


Question:
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


Question:
Among the optical-distribution architectures that are essentially switched ethernet is __________

1.AON

2.PON

3.NON

4.MON


Question:
An endpoint of an inter-process communication flow across a computer network is called __________

1.socket

2.pipe

3.port

4.machine


Question:
Bluetooth is an example of __________

1.personal area network

2.local area network

3.virtual private network

4.wide area network


Question:
Both HDLC and PPP are Data link layer protocols.

1.True

2. False


Question:
Closed-Loop control mechanisms try to _________

1.Remove after congestion occurs

2.Remove after sometime

3.Prevent before congestion occurs

4.Prevent before sending packets


Question:
Discarding policy is mainly done by _______

1.Sender

2.Receiver

3.Router

4.Switch


Question:
Ethernet frame consists of ____________

1.MAC address

2.IP address

3.Default mask

4.Network address


Question:
High speed ethernet works on _________

1.coaxial cable

2.twisted pair cable

3.optical fiber

4.unshielded twisted pair cable


Question:
Home Access is provided by __________

1.DSL

2.FTTP

3.Cable

4.All of the mentioned


Question:
How many methods are used to determine the effective cutoff wavelength?

1.Two

2.One

3.Four

4.Three


Question:
How many switching layers are possessed by MG-OXC?

1.Two

2.Three

3.One

4.Six


Question:
How many techniques of implementation are there for routing wavelength assignment (RWA)?

1.Two

2.Six

3.Three

4.Four


Question:
How many types of hopping are present?

1.Two

2.One

3.Three

4. Four


Question:
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


Question:
In open-loop control, policies are applied to __________

1.Remove after congestion occurs

2.Remove after sometime

3.Prevent before congestion occurs

4.Prevent before sending packets


Question:
Individual wavelength channels and wavebands are terminated through ________________ layers.

1.WXC and PXC

2.WXC and FXC

3.BXC and FXC

4.WXC and BXC


Question:
MAC address is of ___________

1.24 bits

2.36 bits

3.42 bits

4.48 bits


Question:
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


Question:
ONT is connected to splitter using _________

1.High speed fibre cable

2.HFC

3.Optical cable

4.Twisted pair cable


Question:
Socket-style API for windows is called ____________

1.wsock

2.winsock

3.wins

4.sockwi


Question:
SONET stands for ___________

1.synchronous optical network

2.synchronous operational network

3.stream optical network

4.shell operational network


Question:
StarBand provides __________

1.FTTH internet access

2.Cable access

3.Telephone access

4.Satellite access


Question:
Static RWA problem is also known as _____________

1.Routing problem

2.Virtual topology problem

3.Static wavelength problem

4.Light path problem


Question:
Static RWA technique is semi-permanent.

1.True

2.False


Question:
The function of DSLAM is to __________

1.Convert analog signals into digital signals

2.Convert digital signals into analog signals

3.Amplify digital signals

4.De-amplify digital signals


Question:
The main contents of the routing table in datagram networks are ___________

1.Source and Destination address

2.Destination address and Output port

3.Source address and Output port

4.Input port and Output port


Question:
The maximum size of payload field in ethernet frame is __________

1.1000 bytes

2.1200 bytes

3.1300 bytes

4.1500 bytes


Question:
The PPP encapsulation ____________

1.Provides for multiplexing of different network-layer protocols

2.Requires framing to indicate the beginning and end of the encapsulation

3.Establishing, configuring and testing the data-link connection

4.Provides interface for handling the capabilities of the connection/link on the network


Question:
The routing and wavelength assignment problem addresses the core issue of _____________

1.Traffic patterns in a network

2.Wavelength adjustment

3.Wavelength continuity constraint

4.Design problem


Question:
The _________ wavelength is defined as the wavelength greater than which the ratio of the total power and the fundamental mode power has to be decreased to less than 0.1dB.

1.Magnetic

2.Quasi

3.Cut-off

4.EIA


Question:
The ___________ provides information about the physical path and wavelength assignment for all active light paths.

1.Network state

2.RWA

3.LAN topology

4. Secluded communication protocol


Question:
Transmission control protocol ___________

1.is a connection-oriented protocol

2.uses a three way handshake to establish a connection

3.receives data from application as a single stream

4.all of the mentioned


Question:
Transport layer aggregates data from different applications into a single stream before passing it to ____________

1.network layer

2.data link layer

3.application layer

4.physical layer


Question:
Transport layer protocols deals with ____________

1.application to application communication

2.process to process communication

3.node to node communication

4.man to man communication


Question:
Two devices are in network if __________

1.a process in one device is able to exchange information with a process in another device

2.a process is running on both devices

3.PIDs of the processes running of different devices are same

4.a process is active and another is inactive


Question:
User datagram protocol is called connectionless because _____________

1.all UDP packets are treated independently by transport layer

2.it sends data as a stream of related packets

3.it is received in the same order as sent order

4.it sends data very quickly


Question:
Wavelength assignment in RWA is independent on the network topology.

1.True

2.False


Question:
What is the name of the test used to determine the efficient values of the effective cutoff wavelength?

1.Round robin test

2.Mandarin test

3.Hough Werner test

4.Fulton test


Question:
When collection of various computers seems a single coherent system to its client, then it is called _________

1.computer network

2.distributed system

3.networking system

4.mail system


Question:
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


Question:
Which of the following factors affect transmission rate in DSL?

1.The gauge of the twisted-pair line

2.Degree of electrical interfernece

3.Shadow fading

4.The gauge of the twisted-pair line and degree of electrical interference


Question:
Which of the following is used to provide wavelength signal service among the nodes?

1.Regularization

2.Optical enhancing

3.Hopping

4.Pulse breakdown


Question:
____________ deals with establishing the light path in frequently varying traffic patterns.

1.Wavelength routing

2.Wavelength multiplexing

3.Static RWA

4.Dynamic RWA


Question:
_____________ supports a great number of wavelength channels and reduces the number of switches within the optical network.

1.Waveband switching

2.Optical remuneration

3.Optical genesis

4.Wavelength multiplexing


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