Interconnecting Lans

Question 1

Bridge

Answer 1

Lay 2 device that uses MAC address to forward data packets.

Question 2

Bridging Table

Answer 2

MAC address and port where address was obtained

Question 3

ARP Cache

Answer 3

Temporary storage of MAC addresses recently contacted

Question 4

Transparent Bridge

Answer 4

Interconnects two LANs running the same type of protocol

Question 5

Translation Bridge

Answer 5

Interconnects two LANs operating different networking protocols.

Question 6

Switch

Answer 6

Layer 2 device that uses MAC or Ethernet address to forward data packets to a specific host.

Question 7

Managed Switch

Answer 7

Switch that allows network administrator to monitor, configure, and manage features such as who can access the LAN via the switch.

Question 8

Aging time

Answer 8

Length of time a MAC address remains assigned to a switch port.

Question 9

CAM

Answer 9

Content Addressable Memory

Where switch stores MAC addresses of connected devices.

Question 10

Flooding

Answer 10

Switch transmits packets to all switch ports except from where packet was received.

Question 11

Auto-negotiation Protocol

Answer 11

Enables Ethernet equipment to automate many installation steps such as selection of full or half-duplex.

Question 12

ARP

Answer 12

Address Resolution Protocol

Maps an IP address to its MAC address

Question 13

Protocol used by ping command

Answer 13

ICMP

Question 14

Cut-through

Answer 14

Switch forwards a data packet to its destiantion as soon as the MAC address has been read.

Question 15

Store-and-Forward

Answer 15

Switch receives the entire frame before forwarding to its destination. Often includes error checking.

Question 16

Error Threshold

Answer 16

Point where number of errors in data packet triggers switch from cut-through mode to store-and-forward.

Question 17

Dynamic Assignment

Answer 17

MAC address assigned to a port when connected to a switch

Question 18

Static Assignment

Answer 18

MAC address manually assigned to a port on a switch that does not expire.

Question 19

Secure Address

Answer 19

Only the MAC address assigned to the switch port will function.

Question 20

Isolating the Collision Domains

Answer 20

Network is broken into segments

Question 21

Fast-forward

Answer 21

Form of cut-through switching where the packet is sent as soon as MAC address is extracted

Question 22

Fragment-free

Answer 22

Form of cut-through switching where fragment collisions are filtered out

Question 23

Fragment Collisions

Answer 23

Collisions that occur within the first 64 bytes of the data packet

Question 24

Adaptive Cut-through

Answer 24

Combination of store-and-forward & cut-through switching.

Question 25

MLS

Answer 25

Multilayer Switch
Operate at Layer 2 and 3 of OSI model.
Have wire speed routing