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Core B – Similar exam questions

 

Section A: Networking and Infrastructure

1.     Explain the role of a DHCP (dynamic host configuration protocol) server in a network.

The role of a DHCP in a networking protocol is to hand out IP addresses to devices on a network. It is given a range of IP addresses so that when a device is added to a network, it is given a unique address to be able to communicate with other devices on the network.

 

2.     Compare and contrast the functions of a switch and a router in a network.

Both switches and routers are crucial components to a network. Although they are both crucial, they do have different uses, and they offer different services. The primary function of a switch is it can operate within a singular network and connect multiple devices. (This is such as computers, printers etc). It also allows them to communicate. On the other hand, the primary function of a router is it connects different networks, and it directs data between them. Routers are essential for connecting a local area network (LAN) to a wide area network (WAN).

 

3.     Describe the process of subnetting an IP address and explain why it is important in network design.

 

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4.     What is the purpose of a VPN (Virtual Private Network) in a corporate environment? How does it improve network security?

In a corporate environment, there are multiple different purposes that a VPN serves. These consist of, enhancing security, privacy and accessibility for employees and corporate resources. One key purpose would consist of secure remote access. A VPN allows employees to securely connect to the corporate network from remote locations, such as when working from home or traveling. It encrypts the connection, ensuring that sensitive corporate data is protected from unauthorised access or interception. VPN’s improve network security as they encrypt the connection between the employee/individual to the actual resources.

 

5.     Explain how DNS (Domain Name System) works and why is essential for internet communication.

A DNS works by translating human friendly domains, such as www.hiwill.com into machine readable IP addresses, such as 192.0.2.1. This allows computers to communicate over the internet.

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