OSI Model

Question 1

Cables

Answer 1

Physical
Layer 1

Question 2

Radio frequencies

Answer 2

Physical
Layer 1

Question 3

Hubs

Answer 3

Physical
Layer 1

Question 4

WAP

Answer 4

Physical
Layer 1

Question 5

Media converters

Answer 5

Physical
Layer 1

Question 6

MAC

Answer 6

Data link
Layer 2

Question 7

Physical addressing

Answer 7

Data link
Layer 2

Question 8

Logical topology

Answer 8

Data link
Layer 2

Question 9

Link layer control / Logical link control

Answer 9

Data link
Layer 2

Question 10

Network interface card NIC

Answer 10

Data link
Layer 2

Question 11

Bridges

Answer 11

Data link
Layer 2

Question 12

Switches

Answer 12

Data link
Layer 2

Question 13

Logical addressing

Answer 13

Network
Layer 3

Question 14

Switching

Answer 14

Network
Layer 3

Question 15

Route discovery and selection

Answer 15

Network
Layer 3

Question 16

ICMP

Answer 16

Network
Layer 3

Internet control message protocol

Question 17

Routers

Answer 17

Network
Layer 3

Question 18

Multilayer switches

Answer 18

Network
Layer 3

Question 19

IPv4 and IPv6

Answer 19

Network
Layer 3

Question 20

TCP/UDP

Answer 20

Transport
Layer 4

Question 21

Windowing

Answer 21

Transport
Layer 4

Question 22

Buffering

Answer 22

Transport
Layer 4

Question 23

WAN accelerators

Answer 23

Transport
Layer 4

Question 24

Firewall

Answer 24

Transport
Layer 4

Question 25

H.323

Answer 25

Session Layer 5 Used to setup, maintain, and tear down a voice/video connection

Question 26

NetBios - used by computers to share files over a network. Which layer does it belong to?

Answer 26

Session Layer 5

Question 27

Responsible for formatting the data exchanged and securing that data with proper encryption

Answer 27

Presentation Layer 6

Question 28

Data formatting ( ASCII, GIF, JPG)

Answer 28

Presentation Layer 6

Question 29

Data encryption

Answer 29

Presentation Layer 6

Question 30

HTML, XML, PHP, JavaScript

Answer 30

Presentation Layer 6

Question 31

SSL(secure sockets layer) - encryption between a server and a client

Answer 31

Presentation Layer 6

Question 32

TLS

Answer 32

Presentation Layer 6 Transport layer security - encrypts data sent over the internet

Question 33

unite communicating components from more than one network application

Answer 33

Application Layer 7

Question 34

service addvertisment

Answer 34

Application Layer 7

Question 35

e-mail - POP3, IMAP, SMTP

Answer 35

Application Layer 7

Question 36

Web Browsing (HTTP, HTTPS)

Answer 36

Application Layer 7

Question 37

DNS

Answer 37

Application Layer 7

Question 38

FTP and FTPS

Answer 38

Application Layer 7

Question 39

SSH / TELNET

Answer 39

Application Layer 7

Question 40

Network management protocol SNMP

Answer 40

Application Layer 7

Question 41

what's PDU?

Answer 41

Protocol data unit

Question 42

Encapsulation: layer 4 adds:

Answer 42

source and destination ports

Question 43

Encapsulation: layer 3 adds:

Answer 43

source and destination IP addresses

Question 44

Encapsulation: layer 2 adds:

Answer 44

source and destination MAC addresses

Question 45

Encapsulation: layer 1 adds:

Answer 45

Transmits layer 2 frames as 1's and 0's over the medium