Open Systems Interconnection

Question 1

Layer 1

Answer 1

Physical

Question 2

Layer 2

Answer 2

Data Link

Question 3

Layer 3

Answer 3

Network

Question 4

Layer 4

Answer 4

Transport

Question 5

Layer 5

Answer 5

Session

Question 6

Layer 6

Answer 6

Presentation

Question 7

Layer 7

Answer 7

Application

Question 8

MPLS

Answer 8

Multi Protocol Label Switching

Question 9

What layer do simplex, half duplex and full duplex belong in?

Answer 9

Session Layer / Layer 5

Question 10

TCP

Answer 10

Transmission Control Protocol

Question 11

UDP

Answer 11

User Datagram Protocol

Question 12

TCP\IP

Answer 12

Transmission Control Protocol \ Internet Protocol

Question 13

A connection oriented session consists of what order of events?

Answer 13

SYN, SYN\ACK, ACK

Question 14

Flow control belongs to what layer?

Answer 14

Transport Layer \ Layer 4

Question 15

LLC

Answer 15

Logical Link Control

Question 16

MAC

Answer 16

Media Access Control

Question 17

IEEE

Answer 17

Institute of Electrical and Electronics Engineers

Question 18

Standard 802.3

Answer 18

Covers Ethernet Networks

Question 19

Standard 802.11

Answer 19

Covers Wireless Networks

Question 20

PDU

Answer 20

Protocol Data Unit

Question 21

DTE

Answer 21

Data Terminal Equipment

Question 22

DCE

Answer 22

Data Communication Equipment

Question 23

CSU\DSU

Answer 23

Channel Service Unit \ Data Service Unit

Question 24

What is wrapping data with protocol information at each layer of the OSI model?

Answer 24

Encapsulation

Question 25

MODEM

Answer 25

Modulator Demodulator

Question 26

FDM

Answer 26

Frequency Division Multiplexing

Question 27

TDM

Answer 27

Time Division Multiplexing

Question 28

Examples of Layer 1 \Physical Devices are:

Answer 28

Hubs & Repeaters

Question 29

Examples of Layer 2 \ Data Link Devices are:

Answer 29

Switches & Bridges

Question 30

Examples of Layer 3 \ Network Devices are:

Answer 30

Routers

Question 31

Framing occurs at what layer?

Answer 31

Data Link \ Layer 2

Question 32

Physical topology occurs at what layer?

Answer 32

Physical \ Layer 1

Question 33

Routing occurs at what layer?

Answer 33

Network \ Layer 3

Question 34

End-To-End communication occurs at what layer?

Answer 34

Transport \ Layer 4

Question 35

Dialog Control occurs at what layer?

Answer 35

Session \ Layer 5

Question 36

Data encryption, compression and translation services occurs at what layer?

Answer 36

Presentation \ Layer 6

Question 37

File, print, message, database and application services occurs at what layer?

Answer 37

Application \ Layer 7

Question 38

What is a 3 way handshake?

Answer 38

SYN, SYN\ACK, ACK

Question 39

TCP & UDP reside at which layer of the OSI model?

Answer 39

Layer 4 \ Transport

Question 40

What layer of the OSI model provides an entry point for programs to access the network infrastructure?

Answer 40

Application \ Layer 7

Question 41

What layer could be the source of a “time-out” message?

Answer 41

Application \ Layer 7

Question 42

Which layer of the OSI model is responsible for code and character-set conversion?

Answer 42

Presentation \ Layer 6

Question 43

Which layer of the OSI model is responsible for converting data into signals appropriate for the transmission medium?

Answer 43

Layer 1 \ Physical

Question 44

Segmentation of data streams occurs at which layer of the OSI model?

Answer 44

Transport \ Layer 4

Question 45

What is the correct order for data encapsulation?

Answer 45

Data, Segment, Packet, Frame, Bits

Question 46

Acknowledgements, sequencing and flow control are characteristic of which OSI layer?

Answer 46

Layer 4 \ Transport

Question 47

What is the purpose of flow control?

Answer 47

To provide a means for the receiver to govern the amount of data sent by the sender.

Question 48

What layer of the OSI model does IP belong to?

Answer 48

Network \ Layer 3