Switching

Question 1

Unicast

Answer 1

1 to 1 communication

Question 2

Broadcast

Answer 2

1 to ALL communication

Question 3

Multicast

Answer 3

1 to Many - Multicast clients must be part of logical group

Question 4

Broadcast address will never be a

Answer 4

Source IP Address

Question 5

Multicast address will never be a

Answer 5

Source IP address

Question 6

auto-MDIX

Answer 6

feature is enabled by default on select IOS

Question 7

Collision Domains

Answer 7

each port on a switch and router is a single collision domain

Question 8

Broadcast Domain

Answer 8

Each port on a router is a Broadcast

Domain

Question 9

Segmentation

Answer 9

term used to describe how a router breaks up broadcast domains

Question 10

Store-and-forward

Answer 10

when switch recieves the fram it stores the data in buffers until the complete frame has

Question 11

Cut-through

Answer 11

two variants: Fast-forward, Fragment-free

Question 12

fast-forward switching

Answer 12

variant of cut through - immediately forwards a packet after reading the destination address.

Question 13

fragment-free switching

Answer 13

variant of cut through - stores the first 634 bytes of the frame before forwarding

Question 14

symmetric switching

Answer 14

all ports have same bandwidth

Question 15

asymmetric switching

Answer 15

switching ports do not have the same bandwidth on all ports. Memory buffering is required

Question 16

port-based memory

Answer 16

buffering

Question 17

shared memory buffering

Answer 17

deposits all frames into a common memory buffer

Question 18

switch boot sequence

Answer 18

1. low level CPU initialization
2. POST
3. Initializes
4. loads default operating system

Question 19

stat light is amber - what happened

Answer 19

failed post

Question 20

default management vlan

Answer 20

VLAN1 - only used for remote administration

Question 21

how to configure a switch management interface

Answer 21

1. set up vlan
2. configure an access port to vlan
3. configure default gateway

Question 22

PortFAST

Answer 22

when enabledthe interface changes from a blocking state to a forwarding state w/o making the intermediate STP Changes.

Question 23

When to use PortFAST

Answer 23

only on interfaces that connect to end stations; otherwise could cause loop

Question 24

BPDU

Answer 24

bridge protocol data unit - the BPDU guard feature on Portfast enabled interfaces - prevents the switch interface from sending and recieving BPDU’s

Question 25

“bpdufilter default”

Answer 25

globally enable BPDU filtering on PortFAST enabled interface

Question 26

“bpduguard default”

Answer 26

place the interfaces that recieve BPDU

Question 27

Portfast

“Default”

Answer 27

globally enables PortFAST on all non trunking ports

Question 28

BackboneFast

Answer 28

*

Question 29

UplinkFast

Answer 29

*

Question 30

Root Guard

Answer 30

*

Question 31

MAC Address Table (CAM table)

Answer 31

*

Question 32

microsegmentation

Answer 32

term used to describe how a switch the switch decreases the number of collisions on the network

Question 33

switch packet forwarding methods

Answer 33

1. store and forward

2. cut through

Question 34

2 variants of cut through

Answer 34

1. fast forward switching

2. fragment free switching