Mod 7

Question 1

This is responsible for data encapsulation n accessing the media THIS HAS 3

1. Itsh the internal str uture of the ethernet frame

Answer 1

Mac Sublayer

1 ethernet frame

Question 2

Ethernet operates in the —- layer n —- layer

Has IEEE ?. N ?

Answer 2

1. Data link n
   Physical

2 802.2 (LLC subplayer ) n 802.3( Mac Subplayer)

Question 3

Sine ethernet has 2 layar, data link has 2 sublayers ? N ?

Answer 3

1. LLC (802.2 ) N MAC(803.2

Question 4

Ieee data encap has 3 things r under MAC SUBLAYER FROM DATA LINK ?

Mac sublayer in media acces

Answer 4

1. Ethert frame // INTERNAL
   2 ether addressing // source n desti for NIC
   3 ether errr detection/

4 copper n fiber
5. Can be full duplex(common) no need cmsda) or half duplex (need csmda)

Question 5

What ethernet frame size is ?? Bytes n max is?

If less than minimum bytes it is considred??

If lagpas than maximum bytes it is considred??

Answer 5

1. 64 min n 1518 max
2. Collision fragment / runt
3. Baby giant frames

Question 6

What ethernet frame size is ?? Bytes n max is?

If less than minimum bytes it is considred??

If lagpas than maximum bytes it is considred??

Answer 6

1. 64 min n 1518 max
2. Collision fragment / runt
3. Baby giant frames

Question 7

Ether Mac ADDRESS ADRRES CONSIST OF ? BIT

T or F
2. Ethernet Addr consist of 6 hexa decVENDER OUI followed by a vendor-assgned value

Answer 7

1. 48 bit expressed using 12 hexa dec val
   2 . T

Question 8

. When dev forwards message to ethernet heaDrr, it includes ??? N ??? Address

2 this address is used when frame is sent from single transmitting dev tu singke dest device

Answer 8

1. 1 SOURCE MAC ADD
   1.2. DESTI MAC ADD
2. UNICAST

Question 9

Ang broadcat ay para sa ?
Has ff-ff-ff…

2. Multi cast has 0100-5E

Layer 2 switch uses layer ? To make forwarding decisions

Answer 9

1. Lht
2. Pars selected
3. Layer 2 mac address

Question 10

This exmins MAC address to mke forwarding decisions 4 each fRAME

2. What r 2 frame forwarding methods

Answer 10

1. ETHERNET switch
2. Store-n- forward switchinf (common)// computes d cr c frame , verify needed , determines kung may error
   2.1 Cut-throug// no error detection, desti the frame. An be forwarded address mUST BE READ b4

Question 11

Cut thru switching has 2 types ?

Answer 11

1.1 fast forward switc// offers d lowest latemcy, send agad

1.2fragmentbfree seicth,// looks kung tama b un ports n pinasok, this avoids collision, ensures ders no collision b4 forwarding d frame

Question 12

Store n forward witching has 2 memory buffering ( tecniq for storing frames)? 2

Answer 12

1.1 part based ;; frames r linked incom / outgoing ports, delay can happen

1. Shared memory // ~used UNUSED PORTS 3 STORE D MEMORY ,
   - dynamically linked, deposits all frames in2 common memory buffer fby all switch ports
   - has fewer drpped items

Question 13

1 . 2 basic setting of switch r ? N ?

2. Types of duples settings 2
3. This enables dev to negotiate d best speed n duplex capabilities

Answer 13

1. Bandwidth (speed n duplex setting
2. 1 half-duples// only one end at a time
   2.2 full-duplex// bothe ends can receive can SEND transmission, GIGABIT ethernet OPERATES ONLI SA FULL
3. autonegotiation

Question 14

1. A connection between a router n host requires ::::: ? Connection

T or F
2. Auto mdix / is aitomatic medium dependent inter crossover
3 ipuse mdix auto “ to reanabled d command

Answer 14

1. Crossover. Onnection
2. T
3. T