Computer Network Basics

What is a network topology?

• A network topology is the speed of internet connection.

• A network topology is the color scheme used in network design.

• A network topology is the layout pattern of interconnections between devices in a network.

• A network topology is the type of computer hardware used in a network.

How many layers are there in the OSI model?

• 10

• 4

• 12

• 7

What are the names of the layers in the OSI model?

• Physical, Data Link, Network, Transport, Presentation, Session, Application, Data

• Application, Presentation, Session, Transport, Network, Data Link, Physical

• Physical, Data Link, Network, Transport, Session, Presentation, and Application

• Data, Network, Transport, Presentation, Session, Application, Physical

What does TCP/IP stand for?

• Transmission Command Protocol/Internet Protocol

• Transmission Control Protocol/Internet Protocol

• Telecommunication Control Protocol/Internet Protocol

• Transfer Control Protocol/Internet Protocol

What are the main protocols in the TCP/IP suite?

• HTTP

• FTP

• SSH

• IP, TCP, UDP, ICMP

What is the function of a router in a network?

• A router forwards data packets between computer networks.

• A router is used to store files and documents in a network.

• A router encrypts all data passing through the network.

• A router broadcasts data packets to all devices on the network.

Explain the role of a switch in a network.

• A switch in a network is used for wireless connections only

• A switch in a network broadcasts data packets to all devices in the LAN

• A switch in a network forwards data packets to their intended destination within the LAN using MAC addresses.

• A switch in a network filters data packets based on IP addresses

What is a modem and what is its purpose in a network?

• A modem is a device that modulates and demodulates analog signals to encode and decode digital information, allowing computers to transmit data over telephone or cable lines. Its purpose in a network is to establish a connection between the user's device and the Internet Service Provider (ISP) network.

• A modem is a type of computer mouse used to navigate the internet

• A modem is a software program that enhances network security

• A modem is a device that amplifies sound signals in a network

What is a firewall and why is it important in network security?

• Firewalls are designed to share sensitive data with unauthorized users

• A firewall is important in network security because it helps prevent unauthorized access, protects against cyber threats, and ensures the confidentiality, integrity, and availability of data within a network.

• Firewalls are only necessary for personal computers, not networks

• A firewall is used to increase network speed by removing security measures

What is the difference between a hub and a switch?

• A hub forwards data only to the intended recipient, while a switch broadcasts data to all devices.

• A hub and a switch are the same thing.

• A hub broadcasts data to all devices, while a switch forwards data only to the intended recipient.

• A hub sends data only to the intended recipient, while a switch broadcasts data to all devices.