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
C
Correct answer
Explanation
This term is used to describe the internal workings of the internet and that specifies internet standards.
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IETF
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IANA
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IRTF
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Subnet
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Interface
A
Correct answer
Explanation
This body of Internet Architecture Board (IAB) provides a working group that defines standards known as Request For Comments (RFCs).
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Transport layer security
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Packet filtering gateway
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Non repudiation
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Secure socket layer
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Message integrity check
D
Correct answer
Explanation
By using this security standard, it is possible run any TCP/IP application securely with no change in the application.
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Transport mode
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Tunnel mode
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Exclusive mode
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Security association
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Non repudiation
A
Correct answer
Explanation
This mode is used when an security association is made between two hosts that usually reside in the same network.
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Secure electronic transaction
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Message authentication code
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Secure socket layer
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Cryptographic hashes
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ProtectedData
C
Correct answer
Explanation
The SSL protocol offers a substitute to the standard security implemented TCP/IP socket API.
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VLAN has mutually isolated, multiple distinct broadcast domains.
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There can be one or more routers to pass the data packets.
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It is not flexible for the networking requirements.
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VLAN provides broadcast filtering, security and address summarisation.
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It provides scalability and security to the applications.
C
Correct answer
Explanation
VLANs provide the flexibility to adapt to changes in network requirements and allows for simplified administration.
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Ping
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Winipcfg
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Netcfg
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Tracert
C
Correct answer
Explanation
Ping, Winipcfg (Windows IP Configuration), and Tracert (Trace Route) are all standard Windows network diagnostic commands. 'Netcfg' is not a standard Windows network command - it may be confused with 'netsh' or 'ipconfig'. The correct network utilities are ping, tracert, ipconfig, winipcfg, netstat, etc.
A
Correct answer
Explanation
Switches, Hubs, and Routers are all fundamental network devices that forward data. 'Core' is not a specific network device - it refers to a layer in network architecture (core layer) or core switches, but 'Core' alone is not a device category. The actual devices are routers, switches, hubs, bridges, and repeaters.
C
Correct answer
Explanation
Cable modems provide broadband internet access over coaxial cable lines, offering speeds from 25 Mbps to 1+ Gbps. 28.8k and 56k are dial-up modem speeds (narrowband). 'Modem' alone is a device type, not a connection technology - the question asks for the broadband technology, which is Cable.
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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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None of these
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bridge
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gateway
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router
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modem
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none of these
B
Correct answer
Explanation
A gateway connects networks with different protocols by translating between them. Bridges (A) connect similar networks, routers (C) direct traffic within similar networks, and modems (D) convert digital to analog signals.
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is the exchange of text messages and computer files transmitted via a communications network such as a local area network on Internet
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permits users to converse in real time with each other via the computer while connected to the Internet
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functions much like an answering machine, allowing callers to leave a voice message for the called party
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involves using video and computer technology to conduct a meeting between participants at geographically separate locations
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none of these
C
Correct answer
Explanation
Voice mail stores voice messages digitally, allowing callers to leave messages when the recipient is unavailable, similar to how an answering machine works. The other options describe email/instant messaging (A), chat (B), and video conferencing (D).
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single-user license agreement
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network site license
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end-user license agreement
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business software license
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none of these
B
Correct answer
Explanation
A network site license allows multiple users to share a single copy of software installed on a server, rather than requiring individual licenses for each computer. Single-user (A) and end-user (C) licenses are for individual use.
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difficult or impossible and where line-of-sight transmission is unavailable
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easy or promising and where line-of-sight transmission is unavailable
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difficult or impossible and where line-of-sight transmission is available
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easy or promising and where line-of-sight transmission is available
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none of these
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each computer must have a network card
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there must be communication media connecting the network's hardware devices
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there must be at least one connecting device
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each computer must have software that supports the movement of information
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none of these
C
Correct answer
Explanation
Basic computer networks require communication media, network cards, and supporting software. However, they do not strictly require an intermediate connecting device like a router or switch if devices are connected in certain peer-to-peer configurations using a direct cable or wireless ad-hoc connection.