Routing and Switching Testout 2.1.2

Question 1

What layer does the HTTP protocol reside in within TCP/IP? What does it do?

Answer 1

The HTTP protocol resides in the application layer. It provides support for browsers regardless of their type

Question 2

What does HTTPS provide that the HTTP protocol can not?

Answer 2

It provides secure socket shell and a more secure version of the HTTP protocol. In other words, it can be used to protect sensitive data that is shared in internet browsers

Question 3

What does the FTP protocol do?

Answer 3

It transfers and receives files

Question 4

What does the trivial file transfer protocol (TFTP) do?

Answer 4

It transfers files and receives files, but is less secure than FTP

Question 5

FTP utilizes TCP while TFTP utilizes____

Answer 5

UDP

Question 6

What happens at the transport layer in respect to protocols?

Answer 6

When data enters the transport layer, a port number is associated with the service used at the application layer. The port number of the application service is appended to the data as a header

Question 7

What is the port number for HTTPS?

Answer 7

port 443

Question 8

What is the port number for Telnet?

Answer 8

23

Question 9

What is the port number for HTTP?

Answer 9

80

Question 10

What is the port number for FTP

Answer 10

Port 20 & 21

Question 11

What makes TCP more secure than UDP?

Answer 11

TCP sends data from the transport layer by ensuring that a recipient is available and data was received at the destination as expected. TCP makes sure a recipient is available by sending a handshake request to a destination. Once the destination responds to the handshake with an acknowledgement, only then does TCP start to forward data to the destination. This makes TCP more secure and reliable than UDP

Question 12

What is TCP best for?

Answer 12

TCP is best for network exchanges that that require all pieces of data to be sent from a source and received bt a destination

Question 13

How is UDP different from TCP?

Answer 13

UDP does not ensure the existence of a recipient or that a recipient is ready to receive data. Data is sent without the need of a recipient’s acknowledgement, which makes it connectionless

Question 14

When is it beneficial to use UDP?

Answer 14

It is beneficial to use UDP when the speed of data transmission matters more than the accuracy and wholeness of the data transmitted

Question 15

What is the primary protocol at the internet layer?

Answer 15

IP

Question 16

What does the IP protocol do?

Answer 16

Provide logical addressing for a data segment; creating a packet

Question 17

What does the IP protocol allow data to do?

Answer 17

By giving data logical addressing, the IP protocol allows data to be routed through a network

Question 18

What does a IP address tell about a network host/device?

Answer 18

A portion of the IP describes the location of a network. the other part of the IP address describes the location of the device/host in an area of a network

Question 19

Where is the source and destination MAC address header added to a packet to form a frame?

Answer 19

This is done at the link layer in the TCP/IP model

Question 20

How are bits transmitted from the link layer?

Answer 20

via conversion to electricity, radio waves, or light

Question 21

What is another names for the application layer?

Answer 21

The process to process layer

Question 22

What is another name for the transport layer?

Answer 22

The host to host layer

Question 23

What is another name for the internet layer?

Answer 23

The network layer

Question 24

What is another name for the link layer?

Answer 24

Physical and data link layer

Question 25

Which layer decides how data moves across a network transmission medium?

Answer 25

Link layer