OSI Reference Model

Question 1

Application Layer

Answer 1

The layer where users communicate with the network stack through application program interfaces, or APIs, that connect the application in use to the operating system of the computer.

Question 2

Application Programming Interface (API)

Answer 2

The computer code in an application that calls for remote networked services.

Question 3

FTP

Answer 3

File Transfer Protocol, used to move a file from one computer to another with a guarantee of delivery.

Question 4

TFTP

Answer 4

Trivial File Transfer Protocol, used to move a file from one computer to another without a guarantee of delivery.

Question 5

Protocol Stack

Answer 5

An implementation of a computer networking protocol suite or protocol family, e.g., TCP/IP.

Question 6

Presentation Layer

Answer 6

The layer that presents data to the application layer and is responsible for data translation and computer code formatting.

Question 7

Simplex

Answer 7

Unidirectional; a one-way transmission. (Radio)

Question 8

Half Duplex

Answer 8

Providing communication in both directions, but only one direction at a time, not simultaneously. (Walkie Talkie)

Question 9

Full Duplex

Answer 9

Describing a duplex system in which both parties can communicate with each other simultaneously.