MCQ on Communications and Networks – Computer GK
Useful and informative MCQ on Communications and Networks – Computer GK that include topics like Communication System, Data Transmission Modes, Data Transmission Speed, Data Transmission Media, Switching Techniques, Routing Techniques, Network Topologies, Network Types, Communication Protocols, Wireless Networks, Internetworking Tools, etc.
These MCQ on Communications and Networks – Computer GK are very helpful for competitive exams such as CPCT, GATE, IES/ESE, IBPS PO, IBPS Clerk, SBI PO, SBI Clerk, RBI, SEBI, LIC, NICL, BCA, B.Sc. IT, DCA, SSC, RRB, NIELIT CCC, CTET, UDC NET, CUET, MCA, PGDCA, MCS, TET, State Police, BPO, etc.
These MCQ on Communications and Networks – Computer GK have correct answers and brief explanations of each question for better understanding.
Q41. Which of the following network topologies connects devices in a hierarchical structure, with each level connected to the level above and below it?
a) Bus topology
b) Ring topology
c) Tree topology
d) Star topology
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Correct Answer: c) Tree topology
Explanation: Tree topology is a network topology that connects devices in a hierarchical structure, with each level connected to the level above and below it. Tree topology is a combination of bus and star topologies, with the central hub or switch of each star connected to a common bus. This topology allows for easy expansion and provides good fault tolerance, as a failure in one connection does not affect the other devices. However, the entire network can be disrupted if the central bus fails.
Q42. Which of the following network types covers a large geographical area, such as a city or a region?
a) Local Area Network (LAN)
b) Personal Area Network (PAN)
c) Campus Area Network (CAN)
d) Metropolitan Area Network (MAN)
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Correct Answer: d) Metropolitan Area Network (MAN)
Explanation: A Metropolitan Area Network (MAN) is a network type that covers a large geographical area, such as a city or a region. MANs are typically used to connect multiple LANs or provide high-speed connectivity between different locations within the covered area. They can be owned and managed by a single organization, such as a city government or a telecommunications company, or by multiple organizations that share the network resources.
Q43. Which of the following is a function of the data link layer in the OSI model?
a) Establishing, maintaining, and terminating a connection between two devices
b) Ensuring that data is transmitted and received in the correct order
c) Providing a physical connection between the computer and the network
d) Error detection and correction
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Correct Answer: d) Error detection and correction
Explanation: In the OSI model, the data link layer is responsible for error detection and correction. The data link layer manages the communication between devices on the same network, ensuring that data is transmitted reliably and without errors. It uses various techniques, such as checksums and cyclic redundancy checks (CRC), to detect and correct errors that may occur during data transmission.
Q44. Which of the following is a type of switching technique that stores and forwards entire messages before delivering them to their destination?
a) Circuit switching
b) Message switching
c) Packet switching
d) Cell switching
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Correct Answer: b) Message switching
Explanation: Message switching is a type of switching technique that stores and forwards entire messages before delivering them to their destination. In message-switched networks, each message is temporarily stored at intermediate nodes (such as switches or routers) until a suitable path to the destination is available. This allows for more efficient use of network resources and can help to reduce congestion. However, message switching can introduce delays in the communication, as messages must be stored and forwarded at each intermediate node.
Q45. Which of the following network topologies connects all devices in a fully interconnected mesh, with each device connected to every other device?
a) Bus topology
b) Ring topology
c) Tree topology
d) Mesh topology
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Correct Answer: d) Mesh topology
Explanation: Mesh topology is a network topology that connects all devices in a fully interconnected mesh, with each device connected to every other device. In a mesh topology, data can be transmitted along multiple paths, providing redundancy and fault tolerance. If one connection fails, the data can still be transmitted along an alternate path. Mesh topologies can be expensive and complex to implement, as they require a large number of connections, but they offer high reliability and performance.
Q46. Which of the following network types covers a medium-sized geographical area, such as a university campus or a business park?
a) Local Area Network (LAN)
b) Personal Area Network (PAN)
c) Campus Area Network (CAN)
d) Metropolitan Area Network (MAN)
Show Answer
Correct Answer: c) Campus Area Network (CAN)
Explanation: A Campus Area Network (CAN) is a network type that covers a medium-sized geographical area, such as a university campus or a business park. CANs are typically used to connect multiple LANs within the covered area, providing high-speed connectivity and shared network resources for the users. They can be owned and managed by the organization that uses them, such as a university or a company.
Q47. In the OSI model, which layer is responsible for routing data packets between networks?
a) Physical layer
b) Data link layer
c) Network layer
d) Transport layer
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Correct Answer: c) Network layer
Explanation: In the OSI model, the network layer is responsible for routing data packets between networks. The network layer manages the logical addressing and routing of data packets, determining the best path for the data to travel between the source and destination networks. It also handles congestion control and network segmentation, ensuring that data is transmitted efficiently and reliably across the network.
Q48. Which of the following is a type of wireless network that covers a large geographical area, such as a city or a country?
a) Wireless Local Area Network (WLAN)
b) Wireless Personal Area Network (WPAN)
c) Wireless Metropolitan Area Network (WMAN)
d) Wireless Wide Area Network (WWAN)
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Correct Answer: d) Wireless Wide Area Network (WWAN)
Explanation: A Wireless Wide Area Network (WWAN) is a type of wireless network that covers a large geographical area, such as a city or a country. WWANs are typically used to provide mobile broadband connectivity for devices, such as smartphones, tablets, and laptops. They use cellular network technologies, such as 4G and 5G, to enable high-speed data transmission over long distances.
Q49. Which of the following is a type of distributed computing system that connects multiple computers or processors to work together as a single, unified computing resource?
a) Cluster computing
b) Grid computing
c) Cloud computing
d) Parallel computing
Show Answer
Correct Answer: a) Cluster computing
Explanation: Cluster computing is a type of distributed computing system that connects multiple computers or processors to work together as a single, unified computing resource. In a cluster, the computers are connected using high-speed networks and work together to perform tasks, such as processing large datasets or running complex simulations. Cluster computing can provide increased performance, reliability, and scalability compared to using a single computer.
Q50. Which of the following is a type of distributed computing system that uses a collection of geographically dispersed computers, connected via the Internet, to perform large-scale computational tasks?
a) Cluster computing
b) Grid computing
c) Cloud computing
d) Parallel computing
Show Answer
Correct Answer: b) Grid computing
Explanation: Grid computing is a type of distributed computing system that uses a collection of geographically dispersed computers, connected via the Internet, to perform large-scale computational tasks. In a grid computing system, the computers share their processing power, memory, and storage resources to work on a common task, such as analyzing large datasets or running complex simulations. Grid computing can provide increased performance and scalability compared to using a single computer or a local cluster.
More MCQ on Computer GK for Competitive Exams
- Introduction to Computer
- Basic Computer Organization
- Number Systems
- Computer Codes
- Processor and Memory
- Secondary Storage Devices
- Input and Output Devices
- Computer Software
- Flowchart and Computer Languages
- System Implementation
- Operating Systems
- Application Software Packages
- Business Data Processing
- Communications and Networks
- Internet Concepts and IoT
- Multimedia and File Extensions
- Classification of Computers
- Cyber Safety and Cyber Crime
- Computer Viruses and Security
- Basic Computer Shortcut Keys
- Shortcut Keys for Windows
- Shortcut Keys for MS Excel
- Shortcut Keys for MS Word
- Computer Abbreviations Set 1
- Computer Abbreviations Set 2
- Computer Abbreviations Set 3
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