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
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telephone lines
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satellites
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microwaves
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all of the above
D
Correct answer
Explanation
Wide Area Networks (WANs) cover large areas and utilize a variety of transmission media, including telephone lines, satellite links, and microwave relays, to connect distant networks.
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network
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server
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supercomputer
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enterprise
A
Correct answer
Explanation
Connecting multiple personal computers together allows them to share resources and data, creating a computer network.
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interface
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actigram
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walk through
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data path
A
Correct answer
Explanation
An interface serves as the point of interaction or communication between two distinct systems or sub-systems, allowing data or control to pass between them.
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postal system
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telephone system
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computer system
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none of these
A
Correct answer
Explanation
Connectionless service is like a postal system where each message is independent and carries full destination address. No prior connection setup is needed; each message is treated separately.
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postal system
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telephone system
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computer system
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none of these
B
Correct answer
Explanation
Connection-oriented service is like a telephone system where a connection must be established before communication. The connection is maintained throughout the conversation.
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unreliable
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reliable
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bad
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none of these
A
Correct answer
Explanation
Datagram services, such as UDP, are connectionless and do not provide reliability guarantees like error correction or retransmission. They are designed for speed rather than guaranteed delivery.
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message stream
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byte stream
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connection-oriented service
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datagram
D
Correct answer
Explanation
Electronic junk mail (email) is typically sent as individual, independent messages. Datagrams are suitable for this as they are discrete units of data that do not require a persistent connection for each individual packet.
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message stream
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byte stream
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connectionless service
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unreliable service
D
Correct answer
Explanation
Digitized voice (VoIP) is often transmitted using unreliable services (like UDP) because real-time delivery is more important than perfect reliability. Dropped packets are preferable to the latency caused by retransmission.
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message stream
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byte stream
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datagram
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request-reply service
D
Correct answer
Explanation
A database query involves sending a request and waiting for a specific reply. This request-reply pattern is a distinct communication model used in client-server interactions.
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EDI (Electronic Data Interchange) is transfer of data from one computer system to another by standardised message formatting, without the need for human intervention.
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It is used by organisations that make a large number of regular transactions.
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Mass customisation is an example of EDI.
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The process of taking from a company specific format and fitting into the EDI standard electronic format is called mapping.
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An EDI standard electronic format for a business format is called dataset.
E
Correct answer
Explanation
An EDI standard electronic format for a business format is called transaction set. Hence, it is an incorrect statement about EDI.
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TCP/IP
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Ethernet
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WAP
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Token ring
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Scalable
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dedicated
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Decentralized
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Secure
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repeater
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router
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gateway
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switch
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Internet
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local area network
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peer-to-peer
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intranet
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IEEE 1394
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ERO 009
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VIC 567
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EEL 509
A
Correct answer
Explanation
FireWire is a serial bus interface standard for high-speed communications, officially known as IEEE 1394.