Ch. 17 * (Data Network Design) Flashcards Preview

RCDD > Ch. 17 * (Data Network Design) > Flashcards

Flashcards in Ch. 17 * (Data Network Design) Deck (54)
0

Functional design

Top down

1

Physical design

Bottom up

2

OSI Model

Open Systems Interconnection Model

3

ISO (international organization for standardization) created OSI model in ___

1978

4

7 layers

All People Seem To Need Domino's Pizza
7.) Application
6.) Presentation
5.) Session
4.) Transport
3.) Network
2.) Data link
1.) Physical

5

Protocol stacks characteristics

Each layer provides a set of services
Services and the stack are defined by protocols
Lower layers provide services to upper layers
SAPs (service access points) are the connection points between layers

6

Encryption

Layer 6

7

All 'S' - synchronizing & start/stop

Layer 5

8

Billing

Layer 4

9

PAN

Personal area network

10

CAN

Campus area network

11

MAN

Metropolitan area network

12

IEEE 802.3ah

Ethernet in the first mile (EFM)

13

Loop distance

Approx. 20,000'

14

DWDM

Dense wave division multiplexing

15

NZDSF

Submarine

16

Unicast

One recipient

17

Broadcast

All devices

18

Multicast

Select group

19

Octet

Grouping of 8 bits

20

MAC Address

48 bits
Hexadecimal

21

Network address (IPv4)

32 bit

22

IEEE 802.11

Wireless

23

IEEE 802.5

Token ring

24

IEEE 802.6

MAN

25

IEEE 802.7

Broadband (BBTAG)

26

IEEE 802.8

Fiber (FOTAG)

27

Hardware component that connects a station to the network

NIC

28

To improve traffic performance, use ___ technique

Traffic prioritization

29

Hub

Half duplex

30

Link aggregation

Multiple NICs

31

Hot swap

No need for powering down

32

Clustering

Multiple servers using link aggregation

33

Print servers

Spool

34

Before hubs there were ___

Shared cable networks

35

Router

Specialized device combining hardware and software

36

G.711

64 Kbps speech compression standard

37

IEEE 802.1p

Traffic prioritization

38

Most demanding network application

Videoconferencing

39

Gateway

Communications
Used to connect dissimilar networks

40

Gatekeeper

Operations

41

MCU

Manages videoconferencing sessions

42

___ addresses interoperability issues with VoIP

Protocol

43

Multicasting

Intelligent

44

Voice traffic is sensitive to ___

Loss & delay

45

Not an active IEEE working group

802.2

46

Resilient Packet Ring

802.17

47

When message transfer is unsuccessful, ___ is necessary to request a retransmission

Confirmation

48

Terms to describe a hub

Multiport repeater
MAU
Concentrator

49

Directing a message to a group of devices

One-to-many

50

Core set of standards for network multimedia

ITU-T

51

Minimum station provisions

Display & input

52

Ensures receiving device is listening

Synchronization

53

System cutover

Invisible