Network Foundations-Week 1

Question 1

What is one advantage of the TCP/IP model over the OSI model?

Answer 1

Provides a standardized reference model for network communication, allows for interoperability among different vendors’ networking equipment and protocols.

Question 2

Which of the following best describes the Transport layer in the OSI model?

Answer 2

Manages end-to-end communication between applications.

Question 3

What is the DHCP protocol used for in computer networking?

Answer 3

DHCP (Dynamic Host Configuration Protocol) is used to automatically assign IP addresses to devices on a network.

Question 4

What is a network topology?

Answer 4

A network topology describes the structure of a network and represents all the connections between all components in a network.

Question 5

Logical port for HTTP

Answer 5

80

Question 6

Logical port for HTTPS

Answer 6

443

Question 7

Logical port for SSH

Answer 7

22

Question 8

Logical port for SMB

Answer 8

445

Question 9

What are the advantages of wireless networks?

Answer 9

Easy mobility, reduced cabling costs, and flexibility in device placement.

Question 10

What are the differences between straight-through and crossover Ethernet cable configurations?

Answer 10

A straight-through Ethernet cable is used to connect devices of different types, such as a computer to a switch or a router to a modem, while a crossover Ethernet cable is used to connect devices of the same type, such as a computer to a computer or a switch to a switch.

Question 11

What are the risks and vulnerabilities of wireless network security?

Answer 11

Unauthorized access, data interception, and network intrusion.

Question 12

What are the three main logical port groups?

Answer 12

Well-known ports, Registered ports, and Dynamic/Private ports.

Question 13

What are logical ports?

Answer 13

Virtual ports that are created by network devices to establish a connection between two physical devices.

Question 14

In a 3-tier architecture, the core layer handles routing and switching functions, while the distribution layer handles access control and security functions, and the access layer handles end device connectivity. In a collapsed architecture, all these functions are combined into a single layer. TRUE OR FALSE?

Answer 14

False

Question 15

Which intermediary device enables devices located in different networks to communicate with each other?

Answer 15

Router

Question 16

TRUE OR FALSE?

The TCP protocol is an unreliable transport protocol that does not guarantee delivery of data, does not perform flow control or error checking, is suitable for applications that prioritize speed and efficiency such as real-time streaming and online gaming. On the other hand, the UDP protocol is a reliable transport protocol that guarantees delivery of data, establishes a connection-oriented communication, performs flow control and error checking, and is suitable for applications that require accurate data delivery such as web browsing and file transfer.

Answer 16

FALSE

Question 17

What is a broadcast domain in networking?

Answer 17

A broadcast domain is a network area where broadcast messages are forwarded to all connected devices.

Question 18

Which network spans across a large geographic area and is managed by multiple service providers?

Answer 18

WAN

Question 19

TRUE OR FALSE? Each layer of the OSI model plays a crucial role in the network communication process and is important for enabling communication between devices.

Answer 19

TRUE

Question 20

Which devices are most commonly used in layer 1 (the physical layer)?

Answer 20

Hubs and Repeaters

Question 21

TRUE OR FALSE? The layered approach of the OSI model facilitates understanding and troubleshooting of network communication issues by allowing identification of the devices used at each layer, which aids in diagnosing problems and implementing solutions.

Answer 21

TRUE

Question 22

What is the operation or function of layer 3 (the network layer)?

Answer 22

Responsible for the organization of data into packets with an IP source and destination for routing.

Question 23

Which protocol is used to transfer text-based data, such as web pages, over the internet in a secure manner?

Answer 23

HTTPS

Question 24

What is the difference between half duplex and full duplex communication in networking?

Answer 24

Half duplex communication restricts data transmission to one direction at a time, while full duplex communication allows data to be transmitted in both directions simultaneously.

Question 26

Which protocol is used to transfer text-based data, such as web pages, over the internet in a secure manner?

Answer 26

HTTPS