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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Transport
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Datalink
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Session
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Application
B
Correct answer
Explanation
The Data Link layer provides the functional and procedural means to transfer data between network entities and provides a link to the physical media.
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Media access control
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Media access circuit
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Media access center
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Media access configuration
A
Correct answer
Explanation
MAC stands for Media Access Control, which is a sublayer of the Data Link layer responsible for controlling how devices on a network gain access to the medium.
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Data Link
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Network
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Physical
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Session
A
Correct answer
Explanation
The Data Link layer is responsible for framing, error detection, and hardware addressing (MAC addresses), acting as the bridge between software and physical media.
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Presentation
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Physical
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Session
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Network
B
Correct answer
Explanation
IEEE 802.3 (Ethernet) defines standards for the Physical and Data Link layers. In the context of OSI questions, it is most commonly associated with the Physical layer's transmission medium and signaling.
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Shields
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Ground ends
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Twisted cables
C
Correct answer
Explanation
Unshielded Twisted Pair (UTP) cables use the twisting of wire pairs to cancel out electromagnetic interference (EMI) and crosstalk from neighboring pairs.
A
Correct answer
Explanation
Fiber optic cables are generally more expensive to manufacture and install compared to standard copper-based cables like UTP.
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::1/128 - loopback
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fe80::/10 - link-local
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127.0.0.1 - loopback
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fd00::/8 - multicast
C
Correct answer
Explanation
127.0.0.1 is the IPv4 loopback address, not IPv6. The IPv6 loopback address is ::1/128.
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It is immune to STP attack
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It is recommended to never use VLAN 1
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It is vulnerable to Double Encapsulation Hopping attack
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VLANs breakup broadcast domains
A
Correct answer
Explanation
VLANs are not immune to STP attacks; they are susceptible to various layer 2 attacks, including VLAN hopping and STP manipulation.
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transmision medium
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feedback
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bottle
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decoder
A
Correct answer
Explanation
A transmission medium (or channel) is the path through which a message travels from the sender to the receiver. Examples include air for sound, fiber optics, or digital networks.
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Router
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Ethernet Switch
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10/100 NIC
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Ethernet Hub
D
Correct answer
Explanation
An Ethernet hub broadcasts all incoming data to every port, which creates unnecessary network traffic and collisions. Switches and routers are much more efficient at directing traffic.
B
Correct answer
Explanation
In a client-server model, the client is the device that requests and receives data or services from a server. The server is the provider of those resources.
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Device that connects computers together
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Device that provides access to the internet
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A brand of computer
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The cord that gives your computer power.
B
Correct answer
Explanation
A modem (modulator-demodulator) is a hardware device that converts data from a digital format into a format suitable for transmission over an analog medium, such as telephone or cable lines, providing internet access.
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Router
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Computer
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Modem
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Internet
A
Correct answer
Explanation
A router is a networking device that forwards data packets between computer networks. It is responsible for connecting multiple devices to form a network and managing traffic between them.
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Any media you can communicate with
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How nodes are connected in a network
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Any device connected to a network.
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Special computer accessible to many users
B
Correct answer
Explanation
Communications media refers to the physical or wireless paths (like cables, fiber optics, or radio waves) used to connect nodes in a network and transmit data between them.