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CompTIA N+ N10-006 > WAN > Flashcards

Flashcards in WAN Deck (16)
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1

What are the common ISP connection types?

Serial, Ethernet (copper or fiber), Wireless

2

What are the types of WAN connection?

Leased line
Circuit Switched
Packet Switched

3

What does Packet Switch WAN use?

Frame Relay

(Not dedicated circuit)

4

How does Leased Line WAN work?

PPP - Point to Point Protocol

(Permanently on and expensive)

5

How does Circuit Switched WAN work?

Pay as you go approach

(connection established when needed)

6

What are SLA and CIR?

Service Level Agreement
Committed Information Rate

7

What are leased line copper connection?

T-1, T-3
E-1, E-3
OC3, OC12

8

What Fiber WAN connections are there?

SONET - Synchronous optical networking
DWDM - Dense Wavelength Division Multiplexing
CWDM - Coarse Wavelength Division Multiplexing

9

What are leased line optical connections?

OC3, OC12

10

What is WAN ATM?

Asynchronous Transfer Mode
Uses CELLS at Layer 2

11

What is WAN MPLS?

Multi-Protocol Label Switching

Used by ISPs

12

What is WAN CSMA?

Carrier Sensing Multiple Access

Collision detection on BUS network

13

What is split horizon?

Prevents routes learned from an interface being advertised on the same interface to prevent routing loops in distance vector routing protocols

14

What is a CSU/DSU?

Channel Service Unit/Data Service Unit
Terminated a WAN connection

15

What is a Smart jack/NIU?

Demarcation between ISP and customer to terminate circuit

16

What is IDSN?

Integrated Services Digital Network

(digital telephone line)