Question

ANY ANSWER IS GREATLY APPRECIATED

QUESTION 1

Match each WAN technology with the correct connection type (more than one technology can use the same connection type)

               

Frame Relay

               

ATM

               

ISDN

               

T1

               

T3

A.           

Packet switched connection

B.           

Packet switched connection

C.           

Circuit switched connection

D.           

Dedicated leased line

E.           

Dedicated leased line

QUESTION 2

Why is it that a service provider could be considered the most important WAN component?

                               

They will be the ones responsible for the IP addressing your devices.

                               

WAN connections will typically cost a large one-time fee, so it's important for the provider to be trustworthy.

                               

They form the WAN connection and are held responsible for its function between locations and the technologies available can vary by provider.

                               

They're not that important. Most organizations manage the entirety of their own WAN connections between locations.

QUESTION 3

Choose the best description of the term 'demarc'

                               

The point of demarcation, where responsibility passes from the service provider to the subscriber of the service

                               

An identifier of virtual circuits in Frame Relay or ATM networks

                               

An authentication protocol used in point-to-point circuits or DSL implementations

                               

The process by which MPLS packets have their labels removed as they exit the provider network

QUESTION 4

What is the main differentiation between a T1 and an E1 connection?

                               

T1 connections are used in the Unitied states, whereas E1 circuits are used in Japan

                               

T1 connections utilize 24 channels, whereas E1 connections utilize 32 channels

                               

T1 connections utilize telephone lines, whereas E1 connections use electrical lines

                               

T1 connections utilize 32 channels, whereas E1 connections utilize 23 channels

QUESTION 5

Which of the following protocols can be used to perform authentication of devices in WANs? (choose two).

                               

DSLAP

                               

CHAP

                               

PAP

                               

DSLAM

QUESTION 6

True or False - Frame Relay identifies each virtual circuit by its VCI (Virtual Circuit Identifier).

True

False

QUESTION 7

Order the following WAN connections from the slowest to the fastest.

SONET

T1

E3

E1

T3

QUESTION 8

Digital circuits like T1 or T3 are terminated by a device called a _______________ that processes the incoming signals into bits the router can understand

                               

CSI/NCIS

                               

SDSL/VDSL

                               

ISDN/HSPA

                               

CSU/DSU

QUESTION 9

Choose the item that represents a commonality between MPLS, Frame Relay, and MPLS connections.

                               

Each of them is a dedicated leased line for point-to-point connections

                               

Each of them forms connections between sites utilizing a service provider network (or WAN cloud)

                               

Each of them utilizes cell switching, featuring fixed length data fields for predictable latency performance

                               

Each of them utilizes circuit switching for higher reliability

QUESTION 10

Which of the following WAN technologies utilizes fiber optics exclusively?

                               

DSL

                               

T3

                               

SONET

                               

POTS

Answer 1

1)
    1. Frame Relay - Packet Switched connection
    2. ATM - Packet switched connection
    3. ISDN - circuit switched connection
    4. T1 - dedicated leased line
    5. T3 - Dedicated leased line
2)  They form the WAN connection and are held responsible for its function between locations and the technologies available can vary by provider
3)  The point of demarcation, whereas responsibility passes from the service provider to the subscriber of the service
4)  T1 connections utilize 24 channels, whereas E1 connections utilize 32 channels
5)  CHAP and PAP
6)  False
7)
    1. T1
    2. E1
    3. E3
    4. T3.
    5. SONET
8)  CSU/DSU
9)  Each of them forms connections between sites utilizing a service provider network (or WAN cloud)
10) SONET