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.
Q31. Which of the following switching techniques establishes a dedicated communication path between two devices for the duration of their conversation?
a) Circuit switching
b) Message switching
c) Packet switching
d) Cell switching
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Correct Answer: a) Circuit switching
Explanation: Circuit switching is a switching technique that establishes a dedicated communication path between two devices for the duration of their conversation. In circuit-switched networks, a dedicated communication channel is established between the source and destination devices before the actual data transmission begins. This channel remains active for the duration of the communication session and is then released when the session ends. Circuit switching is commonly used in traditional telephone networks.
Q32. Which of the following routing techniques uses a fixed path for data transmission between two devices?
a) Static routing
b) Dynamic routing
c) Adaptive routing
d) Source routing
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Correct Answer: a) Static routing
Explanation: Static routing is a routing technique that uses a fixed path for data transmission between two devices. In static routing, the path is preconfigured by a network administrator and does not change unless the administrator manually updates the routing information. Static routing is simple to implement and requires less processing overhead compared to dynamic routing, but it may not be as efficient in handling network congestion or failures.
Q33. Which of the following network topologies connects all devices in a closed loop, with each device connected to two other devices?
a) Bus topology
b) Ring topology
c) Tree topology
d) Star topology
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Correct Answer: b) Ring topology
Explanation: Ring topology is a network topology that connects all devices in a closed loop, with each device connected to two other devices. In a ring topology, data is transmitted in one direction around the loop, passing through each device until it reaches its destination. Ring topologies can provide equal access to the network for all devices and can be easily expanded, but they may be less fault-tolerant than other topologies, as a single break in the loop can disrupt the entire network.
Q34. Which of the following network topologies connects all devices to a central hub or switch?
a) Bus topology
b) Ring topology
c) Tree topology
d) Star topology
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Correct Answer: d) Star topology
Explanation: Star topology is a network topology that connects all devices to a central hub or switch. In a star topology, each device has a dedicated connection to the central hub, which manages data transmission between devices. Star topologies are easy to install and manage, and they offer good fault tolerance, as a failure in one connection does not affect the other devices. However, the central hub can be a single point of failure, as its failure can disrupt the entire network.
Q35. Which of the following network types covers a small geographical area, such as a single building or a group of buildings?
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: a) Local Area Network (LAN)
Explanation: A Local Area Network (LAN) is a network type that covers a small geographical area, such as a single building or a group of buildings. LANs are typically used to connect devices, such as computers, printers, and servers, within a single organization or home. They offer high-speed data transmission and are usually owned and managed by the organization or individual that uses them.
Q36. Which of the following communication protocols is responsible for establishing, maintaining, and terminating a connection between two devices?
a) Transport layer protocol
b) Network layer protocol
c) Data link layer protocol
d) Session layer protocol
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Correct Answer: d) Session layer protocol
Explanation: The session layer protocol is responsible for establishing, maintaining, and terminating a connection between two devices. It manages the communication session between the devices, ensuring that data is transmitted and received in the correct order and that the connection is maintained for the duration of the communication. The session layer protocol also handles error recovery and can re-establish the connection if it is lost during the communication.
Q37. Which of the following is a function of the Network Interface Card (NIC) in a computer?
a) To convert digital signals to analog signals and vice versa
b) To route data packets between networks
c) To provide a physical connection between the computer and the network
d) To manage the communication session between two devices
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Correct Answer: c) To provide a physical connection between the computer and the network
Explanation: The Network Interface Card (NIC) is a hardware component in a computer that provides a physical connection between the computer and the network. The NIC is responsible for transmitting and receiving data between the computer and the network, as well as handling error detection and correction. It also contains a unique Media Access Control (MAC) address, which is used to identify the computer on the network.
Q38. In the OSI model, which layer is responsible for ensuring that data is transmitted and received in the correct order?
a) Physical layer
b) Data link layer
c) Network layer
d) Transport layer
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Correct Answer: d) Transport layer
Explanation: In the OSI model, the transport layer is responsible for ensuring that data is transmitted and received in the correct order. The transport layer provides end-to-end communication between devices, managing the flow of data and ensuring that it is transmitted reliably and in the correct sequence. It also handles error detection and correction, as well as congestion control to prevent network overload.
Q39. Which of the following wireless network types is designed for short-range communication between devices, such as smartphones, tablets, and wearable devices?
a) Wireless Local Area Network (WLAN)
b) Wireless Personal Area Network (WPAN)
c) Wireless Metropolitan Area Network (WMAN)
d) Wireless Wide Area Network (WWAN)
Show Answer
Correct Answer: b) Wireless Personal Area Network (WPAN)
Explanation: A Wireless Personal Area Network (WPAN) is a type of wireless network designed for short-range communication between devices, such as smartphones, tablets, and wearable devices. WPANs typically have a range of up to 10 meters and use low-power wireless technologies, such as Bluetooth and Zigbee, to enable communication between devices without the need for a central infrastructure.
Q40. Which of the following is a type of distributed computing system that divides a large computational task into smaller tasks that can be processed simultaneously by multiple computers or processors?
a) Cluster computing
b) Grid computing
c) Cloud computing
d) Parallel computing
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Correct Answer: d) Parallel computing
Explanation: Parallel computing is a type of distributed computing system that divides a large computational task into smaller tasks that can be processed simultaneously by multiple computers or processors. In parallel computing, the smaller tasks are executed concurrently, allowing for faster processing and more efficient use of computing resources. Parallel computing can be implemented using a variety of hardware and software architectures, such as multi-core processors, graphics processing units (GPUs), and high-performance computing clusters.
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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