Layer 2/Data Link

Question 1

CSMA/CD

Answer 1

Carrier Sense Multiple Access with Collison Detection- Ethernet protocol governing contention and media access

Question 2

100BASE-TX

Answer 2

“Fast Ethernet” over Cat 5 (or better)
Max length - 100 meters

Question 3

1000BASE-T

Answer 3

“Gigabit Ethernet” over CAT 5e or better
Max length - 100 meters

Question 4

10GBASE-T

Answer 4

UTP (Cat6) - max 55m
F/UTP (Cat 6A) - max 100m
S/FTP( Cat 7) - max 100m

Question 5

40GBASE-T

Answer 5

S/FTP (Cat 8) - max 30m

Question 6

TIA 569A Standard

Answer 6

GW/G/OW/B/BW/O/BrW/Br

Question 7

TIA 569B Standard

Answer 7

OW/O/GW/B/BW/G/BrW/Br

Question 8

SMF

Answer 8

Single Mode Fiber - up to 100 Gbps, distance up to 40 Klm
OS1 - indoor use
OS2 - outdoor use

Question 9

MMF

Answer 9

Multimode Fiber - larger core, shorter wavelength. Transmits in multiple waves of varying length.

Question 10

ST type

Answer 10

Straight Tip - push and twist

Question 11

SC type

Answer 11

Subscriber Connector - push/pull

Question 12

LC type

Answer 12

Local Connector - push/ pull. Small form factor allowing for higher port density.

Question 13

MTRJ

Answer 13

Mechanical Transfer Registered Jack - small-form-factor duplex connector with a snap-in design used for multimode networks.

Question 14

SFP

Answer 14

Small Form Factor Pluggable- transceiver
using LC form factor type

Question 15

SFP+

Answer 15

Enhanced SFP- supports 10 GbE

Question 16

QSFP/QSFP+

Answer 16

Quad small form-factor pluggable

Question 17

MTU

Answer 17

Maximum transmission unit - upper limit of an Ethernet payload. Maximum size is 1500 bytes.

Question 18

LACP

Answer 18

Link Aggregation Control Protocol - used to autonegotiate the bonded link between the switch ports and the end system, detect configuration errors, and recover from the failure of one of the physical links.

Question 19

Bridge

Question 20

Switch