Packet Forwarding

Question 1

Forwarding of network traffic from a layer 2 perspective users what information?

Answer 1

Destination MAC address

Question 2

What type of network device helps reduce the size of a collision domain?

Answer 2

Switch

Question 3

Forwarding of network traffic from layer 3 perspective uses what information?

Answer 3

Destination IP Address

Question 4

What type of network device reduce the size of a broadcast domain?

Answer 4

Router

Question 5

The ____________ can be directly correlated to the MAC address table.

Answer 5

CAM

Question 6

A ___________ forwarding architecture provides increased port density and forwarding scalability.

Answer 6

Distributed

Question 7

CEF is composed of which components? (Choose two)

 A) Routing Information Base
 B) Forwarding Information Base
 C) Label Information Base
 D) Adjacency Table
 E) MAC address table

Answer 7

Fowarding Information Base & Adjacency Table

Question 8

Ethernet commonly uses __________ to forward data on the Link Layer.

Answer 8

MAC Addresses

Question 9

Ethernet devices use ___________ to ensure only one device talks at the same time in a collision domain.

Answer 9

CSMA/CD (Collision Sense Multiple Access/Collision Detection)

Question 10

A Switch maintains a table of __________ that are associated to a specific device.

Answer 10

MAC (Media Access Control) Addresses

Question 11

When a switch forwards a packet out of every port except the one that it was received on, this is known as a __________?

Answer 11

Unicast Broadcast

Question 12

All devices that reside in the same layer 2 segment are in the same ____________.

Answer 12

Broadcast Domain

Question 13

__________ creates a logical segmentation by creating multiple broadcast domains on the same network switch.

Answer 13

VLANS (Virtual LANs)

Question 14

T/F - VLAN 0 is reserved for 802.1P traffic and cannot be modified or deleted.

Answer 14

True

Question 15

T/F - VLAN 1 is the default VLAN and cannot be modified or deleted.

Answer 15

True

Question 16

VLANs 2 to 1001 are in the normal range but can not be added, deleted, or modified.

Answer 16

False (These are normal, but they CAN be added, deleted, or modified)

Question 17

VLANs 1002 to 1005 are normal ranges but can be deleted or modified.

Answer 17

False ( These are reserved and cannot be deleted or modified)

Question 18

VLANs 1006 to 4094 are in the extended VLAN range and can be added, deleted, or modified.

Answer 18

True

Question 19

How many VLANs can be assigned to an access port on a switch?

Answer 19

One

Question 20

How many VLANs can be assigned to a trunk port?

Answer 20

There is no limit

Question 21

Any traffic that is advertised or received on a trunk port without the 802.1Q VLAN tag, is associated to the _________ VLAN?

Answer 21

Native

Question 22

Excluding MAC Addresses, a switches MAC address table shows which of the following:
A) VLAN
B) Type (Dynamic or Static)
C) Ports
D) All of the above

Answer 22

All of the above

Question 23

The MAC Address table resides in the _________ on the switch.

Answer 23

CAM (Content Addressable Memory)

Question 24

The _________ provides a method of mapping Layer 3 IP addresses to Layer 2 MAC addresses?

Answer 24

ARP (Address Resolution Protocol) Table

Question 25

If any entry does not exist in the local ARP table, the device __________ an ARP request the entire Layer 2 switching segment.

Answer 25

Broadcasts

Question 26

A device with an IP address that is in the up state is stored on the routers routing table refereed to as the ________ ?

Answer 26

RIB (Routing Information Base)

Question 27

T/F - Connected networks or routes have an administrative distance of 1?

Answer 27

False (0)

Question 28

With Catalyst switches it is possible to assign an IP address to a ___________ also know as a VLAN interface.

Answer 28

SVI (Switched Virtual Interface)

Question 29

The command ___________ turns a layer 2 switch port into a layer 3 switch port.

Answer 29

No Switchport

Question 30

T/F - Software switching is Significantly faster than hardware switching?

Answer 30

False

Question 31

_________ is a Cisco proprietary switching mechanism.

Answer 31

CEF (Cisco Express Forwarding)

Question 32

T/F - CEF is a form of software switching?

Answer 32

False

Question 33

_________ allows for the matching and evaluation of a packet on more than one field and is an extension of the CAM architecture.

Answer 33

TCAM (Ternary Content Addressable Memory)

Question 34

TTL stands for what?

Answer 34

Time to Live

Question 35

TTL reduced by what number for every layer 3 hop?

Answer 35

One

Question 36

What happens to a packet when a router receives the packet with TTL of 0?

Answer 36

It is discarded

Question 37

_________ is a redundancy feature that allows a Cisco router with two route processors to sync router configurations.

Answer 37

Stateful Switchover

Question 38

The process of mirroring information between RP's is referred to as _________ ?

Answer 38

Checkpointing

Question 39

A method of forwarding packets in hardware through the use of the FIB and adjacency tables is referred to as __________?

Answer 39

CEF (Cisco Express Forwarding)

Question 40

__________ is the hardware programming of a forwarding table

Answer 40

FIB (Forwarding Information Base)