Ethernet

Question 1

What is an MDF in a data center?

Answer 1

Main Distribution Frame

Cabling connectivity

Question 2

What is an IDF in a data center?

Answer 2

Intermediate Distribution Frame

Question 3

What are the types of coaxial connector?

Answer 3

RG-6

RG-59

Question 4

What are the types of fiber connector?

Answer 4

ST, SC, FC, LC, MTRJ

Question 5

What is a cable SFP and GBIC?

Answer 5

Small FormFactor Plugable
Gigabit Interface Converter
(Adapter to accomodate cable connectors)

Question 6

What is LLDP?

Answer 6

Link Layer Discovery Protocol
Discovering neighbouring devices/nodes
(CDP Cisco)

Question 7

What is MTU?

Answer 7

Maximum Transmission Unit

How large a packet can be

Question 8

What is a MTU blackhole?

Answer 8

A device that doesn’t support the MTU will drop the packet with no acknowledgement

Question 9

What are the types of NIC teaming?

Answer 9

Active-active: All NICs are forwarding traffic
Active-passive: Some NICs are reserved for failover

*device should implement multicast and broadcast only on one NIC

Question 10

What is block 66 used for?

Answer 10

Telephone connections to connect to central wiring closet

Question 11

What is block 110 used for?

Answer 11

Telephone and data networks to connect to central wiring closet