Q61. Which device is used to extend the range of a wireless network?
a) Repeater
b) Router
c) Switch
d) Hub
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Correct Answer: a) Repeater
Explanation: A repeater is used to extend the range of a wireless network by amplifying and retransmitting the signal to cover a larger area.
Q62. What is the primary purpose of a network hub?
a) To route data between different networks
b) To connect multiple devices and broadcast data to all ports
c) To filter and block network traffic
d) To manage network security
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Correct Answer: b) To connect multiple devices and broadcast data to all ports
Explanation: A network hub connects multiple devices on a network and broadcasts data to all connected ports, making it less efficient compared to switches.
Q63. Which type of cable is typically used for high-speed internet connections?
a) Coaxial cable
b) Ethernet cable
c) Fiber optic cable
d) USB cable
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Correct Answer: c) Fiber optic cable
Explanation: Fiber optic cables are used for high-speed internet connections due to their ability to transmit data over long distances with high bandwidth and minimal signal loss.
Q64. What is the purpose of port forwarding in networking?
a) To encrypt data transmissions
b) To route incoming traffic to specific internal IP addresses and ports
c) To manage network traffic
d) To provide internet access
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Correct Answer: b) To route incoming traffic to specific internal IP addresses and ports
Explanation: Port forwarding directs incoming network traffic to specific internal IP addresses and ports, enabling remote access to services within a private network.
Q65. Which device can segment a network to improve performance and security?
a) Hub
b) Switch
c) Repeater
d) Modem
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Correct Answer: b) Switch
Explanation: A switch can segment a network into different collision domains, improving performance and security by reducing network traffic and isolating segments.
Q66. What does “NAT” stand for in networking?
a) Network Address Translation
b) Network Access Technology
c) Network Allocation Table
d) Network Application Transfer
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Correct Answer: a) Network Address Translation
Explanation: NAT stands for Network Address Translation, which allows multiple devices on a local network to share a single public IP address for internet access.
Q67. What is the function of a network proxy server?
a) To filter and control network traffic
b) To connect different types of networks
c) To manage email services
d) To encrypt data transmissions
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Correct Answer: a) To filter and control network traffic
Explanation: A proxy server filters and controls network traffic, providing additional security, caching, and privacy features by acting as an intermediary between users and the internet.
Q68. Which of the following is a common wireless communication standard?
a) Ethernet
b) Bluetooth
c) DSL
d) ISDN
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Correct Answer: b) Bluetooth
Explanation: Bluetooth is a common wireless communication standard used for short-range data exchange between devices, such as between smartphones and headsets.
Q69. What does “DNS” stand for?
a) Domain Name System
b) Digital Network Service
c) Data Network Security
d) Dynamic Name Server
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Correct Answer: a) Domain Name System
Explanation: DNS stands for Domain Name System, which translates human-readable domain names into IP addresses used by computers to identify each other on the network.
Q70. What is the purpose of a “ping” command in networking?
a) To check the connectivity between devices
b) To transfer files between computers
c) To configure network settings
d) To monitor network traffic
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Correct Answer: a) To check the connectivity between devices
Explanation: The “ping” command checks the connectivity between devices by sending ICMP echo requests and measuring the response time.