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Flashcards in Network Models Deck (77)
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1

What does OSI stand for?

Open Systems Interconnection

2

What does TCP/IP stand for?

Transmission Control Protocol/Internet Protocol

3

What is a model?

Simplified representation of the real thing

4

Who created the OSI seven-layer model?

International Organization for Standardization

5

What are sets of clearly defined rules, regulations, standards, and procedures that enable hardware and software developers to make devices and applications that function properly at a particular layer?

Protocols

6

How many layers does the OSI model have?

7

7

What is Layer 1 of the OSI model?

Physical

8

What is Layer 2 of the OSI model?

Data Link

9

What is Layer 3 of the OSI model?

Network

10

What is Layer 4 of the OSI model?

Transport

11

What is Layer 5 of the OSI model?

Session

12

What is Layer 6 of the OSI model?

Presentation

13

What is Layer 7 of the OSI model?

Application

14

What is a good acronym to use to remember the seven-layers of the OSI model?

Please do not throw sausage pizza away

15

Describe an unshielded twisted pair cable.

Usually contains 4 pairs of wires that can transmit and receive data

16

Anything that moves data from one system to another, such as copper cabling, fiber optics and radio waves is part of what layer of the OSI model?

Layer 1 - Physical

17

What serves as the interface between the PC and the network?

Network interface card (NIC)

18

Where do you commonly find a NIC?

Built into the motherboard

19

What is a MAC address?

Media Access Control address - special firmware containing a unique identifier with a 48-bit value

20

MAC addresses are always written in ____.

12 hex characters

21

How many bits does a hex character represent?

4 bits

22

What does OUI stand for?

Organizationally Unique Identifier

23

What does EUI stand for?

Extended Unique Identifier

24

What is a powerful tool that enables you to see electrical pulses?

Oscilloscope

25

What is a container for a chunk of data moving across a network called?

Frame

26

What is the unit of data specified by a protocol at each layer of the OSI seven-layer model?

Protocol Data Unit (PDU)

27

What is the most common wired network technology called?

Ethernet

28

What indicates what is encapsulated in the frame?

Type field

29

What devices filter traffic by MAC address?

Switches

30

Any frame addressed specifically to another device’s MAC address is called a _______.

Unicast frame