1.5

Question 1

accronym for OSI 7 layer model

Answer 1

All
People
Seem
To
Need
Data
Processing

Question 2

the application layer does not contain applications itself such as a web browser, instead it will ___________________ each on separate computers

Answer 2

describes the interface between 2 computers

Question 3

Application layer protocols fall into one of 2 categories. they will either provide ________ or __________ for a user

Answer 3

application or utilities

Question 4

this is a program that monitors and gathers information about network traffic and can alert network administrators about adverse conditions that need attention

Answer 4

simple network management protocol SNMP

Question 5

Responsible for reformatting, compressing, and encrypting data in a way that the application on the receiving end can read

Answer 5

presentation layer

Question 6

Describes how data between applications is synced and recovered of messages don’t arrive intact at the receiving application

Answer 6

session layer

Question 7

An access point into a software available processes such as a specific type of request will generate a particular response. The __________ in this case then is the method an application uses when it requests the OS

Answer 7

API application programming interface

Question 8

this layer is responsible for transporting application layer payloads from one application to another. this layers 2 main protocols include TCP and UDP

Answer 8

transport layer

Question 9

This protocol makes a connection with the end host, and checks whether the data is received and resends it if it has not been received. also called a connection oriented protocol

Answer 9

TCP

Question 10

This protocol does not guarantee delivery because it does not maintain a connection to check whether data is received. also called a connectionless protocol

Answer 10

UDP

Question 11

transport layer protocols add control information in an area at the beginning of the payload called the __________ to create a message ready to be handled down the network layer

Answer 11

header

Question 12

the process of adding a header to the data inherited from the layer above is called

Answer 12

encapsulation

Question 13

The transport layer header addresses the receiving application by a number called a_______ if the message is too large to transport in one packet across the netowr, TCP divides it into smaller messages called ________, and in UDP its called_________.

Answer 13

port / segments / datagrams

Question 14

Sometimes called the Internet layer, it’s responsible for moving messages from one node to another until they reach the destination host. this is the layer where routers typically function

Answer 14

network layer

Question 15

the principal protocol used by the network layer is

Answer 15

IP internet protocol