Lesson 4

Question 1

WAFs

Answer 1

Web application firewalls

Question 2

Data packets (basic)

Answer 2

Unit of information that travels from one device to another within a network

Question 3

TCP

Answer 3

Transmission Control Protocol
(Allows two devices to form a connection and stream data)

Question 4

IP

Answer 4

Internet protocol
(Routing and addressing data packets as they travel between devices on a network)

Question 5

Ports

Answer 5

Where information needs to go

Question 6

Port 25

Answer 6

Emails

Question 7

Port 443

Answer 7

Secure internet communication

Question 8

Port 20

Answer 8

Large file transfers

Question 9

Layers of TCP/IP model

Answer 9

1. Network access layer
2. Internet layer
3. Transport layer
4. Application layer

Question 10

TCP/IP

Answer 10

Transmission Control Protocol/ internet protocol

Question 11

OSI

Answer 11

Open systems interconnection

Question 12

Define: Data link layer

Answer 12

Creation of data packets and their transmission. (Hubs, modems, cables, wiring)

Question 13

ARP

Answer 13

Address resolution protocol

Question 14

Define: Network layer

Answer 14

Ensuring delivery of the destination host

Question 15

Transport layer

Answer 15

Delivery of data between two systems of networks (traffic flow)