Computer Knowledge
Computer Networks
2,256 Questions
Computer networks form the backbone of digital communication, connecting multiple devices to share data and resources. This area covers network architectures, transmission media, modems, and topologies like LAN. These concepts are crucial for computer knowledge sections in banking and government exams.
Network topologiesModulation and demodulationNetwork addressingFiber optic cablesWireless infrastructure
Computer Networks Questions
-
asynchronous
-
synchronous
-
simplex
-
none of these
B
Correct answer
Explanation
Synchronous is one type of communication in which the parties communicating are live or present in space and time.
D
Correct answer
Explanation
This type of topology keeps track of unique electronic address for each node, and manages the flow of information. Hence, it is more reliable than any other topology.
-
Data transfer
-
Connection establishment
-
Termination
-
None of these
B
Correct answer
Explanation
This is the first phase in communication in which before any signal can be transmitted, an end to end circuit must be established.
-
Serial communication
-
Cross talk
-
Parallel communication
-
None of these
C
Correct answer
Explanation
Parallel communication is type of communication in which data is transmitted byte-by-byte.
-
sender
-
receiver
-
channel
-
both (a) and (b)
-
Cellular and radio networks
-
Cable based
-
Computer network based
-
Public policy
-
Multimedia content and network publishing
C
Correct answer
Explanation
These providers are often dialup linkages of lower bandwidth.
-
Finance
-
Banking
-
Ticketing
-
Shopping
-
All of the above
E
Correct answer
Explanation
In all the above sectors, the WAP is used globally.
-
Proxy server
-
Firewall
-
Router
-
Bridge
-
None of the above
B
Correct answer
Explanation
A firewall is a small program that helps protect your computer and its contents from outsiders on the internet or network. A firewall prevents unauthorised traffic to and from your computer.
-
Star
-
Ring
-
Bus
-
Physical
-
Logical
E
Correct answer
Explanation
Logical topology shows how data flows within a network.
Topologies are either physical or logical.
Physical topology refers to the placement of the network's various components, including device location and cable installation.
Logical topology is the way that the signals act on the network media, or the way that the data passes through the network from one device to the next without regard to the physical interconnection of the devices. Bus, Ring and Star topologies are logical topologies.
A
Correct answer
Explanation
TCP/IP is not a network.
TCP/IP, short for Transmission Control Protocol/Internet Protocol, is the suite of communications protocols used to connect hosts on the internet.
-
Logical network
-
Physical network
-
World Wide Web
-
E-commerce
-
HTML
A
Correct answer
Explanation
This network defines protocols to communicate logically among computers linked by the physical network.
-
It is connectionless.
-
Cell delivery is guaranteed but their order is not.
-
Cell delivery is not guaranteed but their order is guaranteed.
-
Cell delivery is guaranteed and their order too.
-
It is a circuit-switched technology.
C
Correct answer
Explanation
ATM networks are connection-oriented. Making a call requires first sending a message to set up a connection. After that, subsequent cells follow the same path to the destination. Cell delivery is not guaranteed, but their order is guaranteed. If cells 1 and 2 are sent in that order, then if both arrive, they will arrive in that order, never first 2 and then 1.
-
Logical Link Control (LLC)
-
Distributed Queue Dual Bus (DQDB)
-
Token Bus
-
CSMA/CD LAN
-
Token Ring
A
Correct answer
Explanation
The IEEE standard 802.2 defines the Logical Link Control (LLC).
-
Connection-oriented packet switched
-
Connectionless packet switched
-
Connection-oriented byte delivery
-
Connection-oriented bit delivery
-
Connectionless byte delivery
A
Correct answer
Explanation
X.25 is a connection-oriented packet switched network.
-
Bandwidth
-
Interference
-
Transmission impairment
-
Use of twisted pair cables
-
None of these
B
Correct answer
Explanation
This is the factor that causes overlapping of frequency bands and distorted signals.