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Exam (elaborations)

NTA Questions and Answers Graded A+

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NTA Questions and Answers Graded A+ Question: What is the primary function of a network switch in a computer network? Answer: A network switch directs data packets between devices on the same network by using MAC addresses to determine the destination, ensuring efficient data transfer within ...

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  • August 16, 2024
  • 13
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NTA
  • NTA
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NTA Questions and Answers Graded A+
Question: What is the primary function of a network switch in a computer network?


Answer: ✔✔ A network switch directs data packets between devices on the same network by

using MAC addresses to determine the destination, ensuring efficient data transfer within the

local area network (LAN).




Question: How does a router differ from a switch in network architecture?


Answer: ✔✔ A router connects different networks and routes data between them, often including

network address translation (NAT) and firewall capabilities. In contrast, a switch operates within

a single network, directing traffic based on MAC addresses.




Question: What is the purpose of subnetting in IP networking?


Answer: ✔✔ Subnetting divides a larger network into smaller, manageable subnetworks,

improving network performance, enhancing security, and making efficient use of IP address

space.




Question: Explain the concept of VLAN (Virtual Local Area Network).




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, Answer: ✔✔ VLANs segment a physical network into multiple logical networks, allowing for

isolated broadcast domains within the same physical network infrastructure, which enhances

security and reduces congestion.




Question: What is a DHCP server and how does it function in a network?


Answer: ✔✔ A DHCP (Dynamic Host Configuration Protocol) server automatically assigns IP

addresses and other network configuration parameters to devices on the network, simplifying

device management and reducing manual configuration errors.




Question: Describe the role of a firewall in network security.


Answer: ✔✔ A firewall monitors and controls incoming and outgoing network traffic based on

predetermined security rules, protecting the network from unauthorized access and potential

threats.




Question: What is the purpose of network address translation (NAT)?


Answer: ✔✔ NAT translates private IP addresses within a local network to a single public IP

address for external communication, allowing multiple devices to share one public IP address

and providing an additional layer of security.




Question: How does the OSI model facilitate network communication?

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