1.0 - Networking Concepts

Question 1

Router

Answer 1

Forwards packets between computer networks (data traveling between networks - creates path - L3 device)

Question 2

Switch

Answer 2

Connects devices on a network by using packet switching

Question 3

Firewall

Answer 3

Determines what traffic is allowed to enter and exit a network.

Question 4

IDS

Answer 4

Intrusion Detection System - detects malicious devices and alerts.

Question 5

IPS

Answer 5

Intrusion Prevention System - Blocks malicious devices on a network and alerts user

Question 6

CDN

Answer 6

Content delivery Network - Network of interconnected servers which speed up webpages.

Question 7

Load balancer

Answer 7

Process of distributing a set of tasks over a set of resources

Question 8

VPN

Answer 8

Allows devices on a separate network to communicate via a dedicated path.

Question 9

QoS

Answer 9

set of technologies and policies used to manage and prioritize network traffic to ensure the performance of critical applications

Question 10

Time to Live

Answer 10

Limits lifespan of data in a network.

Question 11

Proxy server

Question 12

NAS

Answer 12

Network Added Storage -

Question 13

SAN

Answer 13

Storage Area Network -

Question 14

Wireless AP and controller

Question 15

NFV

Answer 15

Network functions virtualization:

Question 16

VPC

Answer 16

Virtual private cloud:

Question 17

Network security groups

Question 18

Cloud gateways

Question 19

Cloud connectivity options

Question 20

7 layers of the OSI model?

Question 21

encapsulation

Question 22

decapsulation

Question 23

What is Multitenancy

Question 24

Elasticity

Question 25

Scalability

Question 26

Service models

Question 27

OSI model layers and their PDU

Answer 27

Application - Datagram Presentation - Datagram Session - Datagram Transport - segment Network - packet Data - frame Physical - Bit