€h 17 Data Network Design

Question 1

17-1 network design

Functional design =

Answer 1

Top-down design

Question 2

17–2 network design

Physical design =

Answer 2

Bottom-up design

Question 3

17–3 networking history

1970s =

Answer 3

Ethernet is developed

Question 4

17–5

OSI =

Answer 4

Open systems interconnection

Question 5

17–5 OSI

ISO =

(2)

Answer 5

* International organization for standardization

* 1978

Question 6

17-5 OSI

objective OSI model =

Answer 6

Structured approach

Question 7

17–5 OSI

OSI model =

(2)

Answer 7

*Seven layers

* Layer above

Question 8

17–6 OSI

Layers OSI model =

Answer 8

Protocol stack

Question 9

17–6 OSI

Protocol stack =

(3)

Answer 9

*Services

*lower layers to upper layers

*SAP’s connection point between layers

Question 10

17–8 layers

7 layers =

Answer 10

All People Seem To Need Domino’s Pizza

Question 11

17–8 layers

All people seem to need dominos pizza =

Answer 11

A= 7 Application

P= 6 presentation

S= 5 session

T= 4 transport

N= 3 network

D= 2 datalink

P= 1physical

Question 12

17–8 layers

Layer 7 application =

(2)

Answer 12

*Applications

*file transfer

Question 13

17–8 layers

Layer 6 presentation =

Answer 13

Encryption

Question 14

17–8 players

Layer 5 session =

Answer 14

Synchronizing start, stop, restart

Question 15

17–8 layers

Layer 4 transport =

(4)

Answer 15

* Transfer

* process

* billing

* quality

Question 16

17–8 layers

Layer 3 network =

(2)

Answer 16

* Internetwork data transfer

* route

Question 17

17–8 layers

Layer 2 datalink =

Answer 17

Intra-network between devices

Question 18

17–8 layers

Layer 1 physical=

Answer 18

Over various media

Question 19

Answer 19

ISO Layers

Question 20

Answer 20

ISO layers

Question 21

17–11 types of networks

PAN =

(3)

Answer 21

Personal area network individual workspace 33 ft

Question 22

Fig 17.6

Answer 22

Personal area network

Question 23

17–12 types of networks

LAN =

(2)

Answer 23

* Local area network

* within a building

Question 24

17–13 types of networks

CAN =

(2)

Answer 24

* Campus area network

* two or more buildings

Question 25

Fig 17.8

Answer 25

campus area network

Question 26

17–14 types of networks MAN = (2)

Answer 26

\*Metropolitan area network \*within a city

Question 27

17–15 types of networks WAN = (2)

Answer 27

\* Wide area network \*geographic distances

Question 28

17–16 Ethernet in the first mile EFM =

Answer 28

IEEE 802.3ah

Question 29

17–16 EFM Loops distance =

Answer 29

20,000 feet

Question 30

Fig 17.11

Answer 30

Ethernet in the first mile (EFM)

Question 31

17–25 EFM cabling transmission characteristics DWDM/NZDSF =

Answer 31

Submarine

Question 32

17–26 types of messaging Unicast = broadcast = multicast =

Answer 32

\* One receptionist \* all devices \* select group

Question 33

17–36 types of addressing Octet = Mac addresses = Network addresses =

Answer 33

\* 8 bits \* 48 bits \* 32 bits

Question 34

Fig 17.22 Network Address = MAC Address =

Answer 34

Network address = 192.168.0.1 MAC address = 00-01-2F-C3-16-12

Question 35

17–41 network architecture standards 802.11 =

Answer 35

Wireless (Hint: two towers = 11)

Question 36

17–41 network architecture standards 802. 5 =

Answer 36

Token ring (Hint: "FIVE TOKEN RINGS!!!")

Question 37

17–41 network architecture standards 802.6 =

Answer 37

MAN (HINT: 6 the man)

Question 38

17–41 network architecture standards 802.7 =

Answer 38

Broadband

Question 39

17–41 network architecture standards 802.8 =

Answer 39

Fiber optic

Question 40

17–46 stations NIC=

Answer 40

Station to the network

Question 41

17–46 stations Improve performance =

Answer 41

Traffic prioritization

Question 42

17–47 stations Hub a NIC =

Answer 42

Half duplex mode

Question 43

17–51 servers Rack unit =

Answer 43

RU, 1RU

Question 44

17–52 servers 42U =

Answer 44

Contains 168 servers

Question 45

17–54 servers Link aggregation = (2)

Answer 45

\*Multiple NICs \*Upgrade server resources incrementally

Question 46

17–54 servers Hot swap =

Answer 46

\* Replacement server and NIC \* powering down

Question 47

17–55 servers Clustering =

Answer 47

Two or more servers

Question 48

17–56 shared peripherals Print servers =

Answer 48

Spooling

Question 49

17–60 data network design Hub =

Answer 49

Centralized point

Question 50

17–60 data network design Before the introduction of hubs =

Answer 50

LAN

Question 51

17–62 hubs Hub =

Answer 51

Layer one physical

Question 52

17–64 Q: with an older system which is periodically slowing down and consists of layer 2 switches, what can be done to speed up the system?

Answer 52

Install bridges

Question 53

17–67 Bridges =

Answer 53

Layer 2 datalink

Question 54

17–68 switches Switches =

Answer 54

Network access device

Question 55

17–68 switches Port on a hub = Port on a switch =

Answer 55

\* Shared connection \* dedicated connection

Question 56

17-69 switches Switch =

Answer 56

Layer 2 data link

Question 57

17-72 routers Router = (2)

Answer 57

\* Hardware and software, specialized devices \* Multiple broadcast domains/subnet

Question 58

Fig 17.50 How many broadcast domains?

Answer 58

VLAN 1 = 5 * Switch A - ports 1,4,6 * Swithc B - ports 5,8 VLAN 2 = 3 * Switch A = port 3 * Swich B = ports 2,7 If no VLAN, the physical LAN would represent 1 single boardcast domain

Question 59

17–88 voice communications G.711 =

Answer 59

Converting speech

Question 60

17–88 voice communications IEEE 802.1p

Answer 60

Prioritization

Question 61

17–94 video communications Videoconferencing =

Answer 61

Most demanding resource

Question 62

17–95 voice communications Gateway = gatekeeper = Multipoint control unit MCU =

Answer 62

\* Communications \* operations \* videoconference sessions