NETWORKING EQUIPMENT

Question 1

What is an endpoint?

Answer 1

Any computer connected to a network. (nodes/clients)

Question 2

Explain the function of router

Answer 2

A router is a switching device for networks, which is able to route network packets, based on their addresses, to other networks or devices. Among other things, they are used for Internet access, for coupling networks or for connecting branch offices to a central office via VPN (Virtual Private Network).

Question 3

what is a gateway in networking?

Answer 3

A computer that sits between different networks or applications. The gateway converts information, data or other communications from one protocol or format to another. A router may perform some of the functions of a gateway.

Question 4

What is the function of a DNS?

Answer 4

A domain name system servers convert URLs and domain names into IP addresses that computers can understand and use

Question 5

Explain the function of DHCP

Answer 5

Dynamic Host Configuration Protocol (DHCP) is a client/server protocol that automatically provides an Internet Protocol (IP) host with its IP address and other related configuration information such as the subnet mask and default gateway

Question 6

Explain the function of a proxy server

Answer 6

A proxy server is a system or router that provides a gateway between users and the internet. Can play the role of a web server

Question 7

What is a hub?

Answer 7

Any central device that connects endpoints to a network
OR
The actual legacy device that was used in the past

Question 8

What is a switch?

Answer 8

An intelligent central device that uses packet switching to forward data packets between devices based on mac addresses

Question 9

What is a modem?

Answer 9

Modulator Demodulator converts analog signals to digital and vice versa

Question 10

What is a firewall

Answer 10

a network security device or software that monitors and filters incoming and outgoing network traffic based on an organization’s previously established security policies.

Question 11

What is the function of a Network interface card?

Answer 11

A hardware component that enables computers to connect to networks

Question 12

What is the function of a repeater

Answer 12

Amplifies and retransmits signals in a network

Question 13

What is a bridge?

Answer 13

A network bridge is a computer networking device that creates a single, aggregate network from multiple network segments.

Question 14

What is the difference between a bridge and a router?

Answer 14

Bridge- data layer, MAC Address

Router-Network layer, IP Address

Question 15

Give examples of resources in networks

Answer 15

• A file
• A folder
• A printer
• A disk drive
• Or just about anything else that exists
on a computer.

Question 16

What are the differences between the functions of a bridge and a switch

Answer 16

Bridge ———– Switch
Packet switching is software based——— Packet switching is hardware based
Only 2 ports ———— Many ports
Cannot perform error checking ———- Can perform error checking
May not have a buffer ——– Has buffers

Question 17

What are the different types of cables in a wired connection?

Answer 17

I. Twisted pair cable- • Used for telephone and network connections Standard telephone lines and Ethernet cables use twisted pair
II. Coaxial Cable- A copper-cored network cable (Thick center wire) 80x more than twisted pair. Used to deliver
television signals as well as to connect
computers in a network
III. Fiber-optic cable-Transmits data as pulses of light through tiny tubes of glass. Replacing twisted-pair cable telephone lines

Question 18

What are the functions of intermediary devices?

Answer 18

• Regenerate and retransmit communication signals
• Maintain information about pathways that exist through the network and internetwork
• Notify other devices of errors and communication failures
• Direct data along alternate pathways when there is link failure
• Classify and direct messages according to priority
• Permit and deny flow of data based on security settings