Deck 9: Understanding Wan Connection Choices

Question 1

SONET is a copper wire technology that transmits at very high speeds.

Answer 1

True

Question 2

Which of the following is a fiber-optic technology that can connect to interfaces for ATM,ISDN,routers,and other equipment and provides very high-speed communications?

A)ADSL
B)ISDN
C)SONET
D)X.25

Answer 2

C

Question 3

Which of the following builds in the capability for virtual point-to-point connections on an Ethernet network consisting of multiple end points?

A)VDSL
B)PPoE
C)QoS
D)SONET

Answer 3

B

Question 4

Which of the following represents a continuously available path between two nodes in a frame relay network?

A)PVC
B)SVC
C)VPN
D)PCM

Question 5

Which of the following is NOT true about DSL?

A)DSL is a digital technology
B)DSL works over copper wire
C)one pair of wires is used to connect from the adapter to the telephone pole
D)a DSL line is dedicated to a single user

Question 6

Circuit mode is most commonly employed in voice transmissions.

Question 7

The bottom layer of SONET is called which of the following?

A)Photonic
B)Electronic
C)Optical
D)Magnetic

Question 8

In a frame relay network the Link Access Protocol for Frame Mode Bearer Services (LAPF)corresponds to which OSI model layer?

A)Network
B)Transport
C)Physical
D)Data link

Question 9

Both switched and permanent virtual circuits are examples of packet switching.

Question 10

Frame relay uses multiple virtual connections over multiple cable media.

Question 11

Like some other WAN technologies,such as frame relay,ATM uses virtual circuits that are called ____.

A)channels
B)streams
C)connections
D)bands

Question 12

____ enables the transmission rate to vary depending on whether the communication is data,multimedia,or voice.

A)RADSL
B)ADSL
C)G.lite ADSL
D)IDSL

Question 13

Which type of DSL service permits voice transmissions concurrently with data transmissions and has a downstream data rate that is faster than the upstream rate?

A)HDSL
B)SHDSL
C)SDSL
D)ADSL

Question 14

A ____ contains a fixed amount of data formatted to be transmitted at high speeds.

A)packet
B)cell
C)frame
D)message

Question 15

In the ____ mode service of an ISDN,several circuits can be used during a communications session.

A)circuit
B)switching
C)relay
D)packet

Question 16

A(n)____ is a network device that can receive multiple inputs and transmit them to a single shared network medium.

A)multiplexer
B)decoder
C)adder
D)shifter

Question 17

Which topology does SONET use?

A)star
B)ring
C)mesh
D)bus

Question 18

An ATM switched virtual circuit (ATM SVC)is a permanent connection.

Question 19

Which of the following refers to providing an assured level of throughput and resources?

A)PRI
B)TDM
C)QoS
D)MPLS

Question 20

Which of the following is NOT true about a frame relay network?

A)can transmit packets using switched virtual circuits
B)has extensive built-in error checking
C)can transmit packets using permanent virtual circuits
D)defines communications between the DTE and DCE devices

Question 21

Match each term with the correct statement below.
a.LAPF
b.Asynchronous Transfer Mode (ATM)
c.packet mode
d.Integrated Services Digital Network (ISDN)
e.Packet-optical transport
f.CIR
g.Synchronous Digital Hierarchy (SDH)
h.digital subscriber line (DSL)
i.ATM permanent virtual circuit (ATM PVC)
dedicated circuit that has a preassigned path and can have a fixed allocated bandwidth between two designated endpoints.

Question 22

Match each term with the correct statement below.
a.LAPF
b.Asynchronous Transfer Mode (ATM)
c.packet mode
d.Integrated Services Digital Network (ISDN)
e.Packet-optical transport
f.CIR
g.Synchronous Digital Hierarchy (SDH)
h.digital subscriber line (DSL)
i.ATM permanent virtual circuit (ATM PVC)
provides a preset Quality of Service (QoS)for time-sensitive traffic,such as voice and video.

Question 23

Which of the following is a switching protocol for backbone or label edge routers to optimize packet exchange through creating labels?

A)ISDN
B)MPLS
C)SONET
D)ATM

Question 24

Which of the following are possible methods of failure recovery used by SONET? (Choose all that apply.)

A)omnidirectional recovery switching
B)unidirectional path switching
C)automatic protection switching
D)manual bilateral switching

Question 25

A frame relay ____________ virtual circuit requires the establishment of a transmission session.

Question 26

Match each term with the correct statement below.
a.LAPF
b.Asynchronous Transfer Mode (ATM)
c.packet mode
d.Integrated Services Digital Network (ISDN)
e.Packet-optical transport
f.CIR
g.Synchronous Digital Hierarchy (SDH)
h.digital subscriber line (DSL)
i.ATM permanent virtual circuit (ATM PVC)
uses advanced modulation technologies on existing telecommunications networks for high-speed networking

Question 27

Match each term with the correct statement below.
a.LAPF
b.Asynchronous Transfer Mode (ATM)
c.packet mode
d.Integrated Services Digital Network (ISDN)
e.Packet-optical transport
f.CIR
g.Synchronous Digital Hierarchy (SDH)
h.digital subscriber line (DSL)
i.ATM permanent virtual circuit (ATM PVC)
offers communication channels in multiples of 64 Kbps,384 Kbps,and 1536 Kbps.

Question 28

Match each term with the correct statement below.
a.LAPF
b.Asynchronous Transfer Mode (ATM)
c.packet mode
d.Integrated Services Digital Network (ISDN)
e.Packet-optical transport
f.CIR
g.Synchronous Digital Hierarchy (SDH)
h.digital subscriber line (DSL)
i.ATM permanent virtual circuit (ATM PVC)
Optical Ethernet that incorporates features of SONET/SDH,Ethernet switching equipment,SAN,and other technologies

Question 29

Which of the following are fields in an MPLS label header? (Choose all that apply.)

A)label value field
B)window size field
C)traffic class field
D)ACK field

Question 30

Which of the following are types of virtual circuit employed by ATM? (Choose all that apply.)

A)permanent virtual circuit
B)switched virtual circuit
C)temporary smart virtual circuit
D)smart permanent virtual circuit

Question 31

An MPLS _____________ contains the equivalent of both Data link and Network layer information and is attached to a packet by an MPLS capable router.

Question 32

Describe a switched virtual circuit versus a permanent virtual circuit.

Question 33

Match each term with the correct statement below.
a.LAPF
b.Asynchronous Transfer Mode (ATM)
c.packet mode
d.Integrated Services Digital Network (ISDN)
e.Packet-optical transport
f.CIR
g.Synchronous Digital Hierarchy (SDH)
h.digital subscriber line (DSL)
i.ATM permanent virtual circuit (ATM PVC)
several circuits can be used during a communications session,and each connected device is assigned an address and sequence number

Question 34

Match each term with the correct statement below.
a.LAPF
b.Asynchronous Transfer Mode (ATM)
c.packet mode
d.Integrated Services Digital Network (ISDN)
e.Packet-optical transport
f.CIR
g.Synchronous Digital Hierarchy (SDH)
h.digital subscriber line (DSL)
i.ATM permanent virtual circuit (ATM PVC)
performs frame formatting and switching and checks for transmission errors on a frame relay network

Question 35

____________________ mode means that your communications circuit lasts for the duration of the communications session and is used exclusively by the two connected devices until it is terminated.

Question 36

Match each term with the correct statement below.
a.LAPF
b.Asynchronous Transfer Mode (ATM)
c.packet mode
d.Integrated Services Digital Network (ISDN)
e.Packet-optical transport
f.CIR
g.Synchronous Digital Hierarchy (SDH)
h.digital subscriber line (DSL)
i.ATM permanent virtual circuit (ATM PVC)
a switch in the frame relay WAN network located at the vendor's site.

Question 37

In voice over frame relay,____________________ compression methods include PCM and ADPCM.

Question 38

Which of the following are characteristics of some Optical Ethernet networks? (Choose all that apply.)

A)consist of a Gigabit or 10 Gigabit backbone
B)multimode fiber-optic cable connections up to 6 miles
C)usually more expensive than SONET and frame relay
D)single-mode fiber-optic cable connections up to one half mile

Question 39

ATM uses virtual circuits called ______________,which can be up to 40 Gbps.

Question 40

Match each term with the correct statement below.
a.LAPF
b.Asynchronous Transfer Mode (ATM)
c.packet mode
d.Integrated Services Digital Network (ISDN)
e.Packet-optical transport
f.CIR
g.Synchronous Digital Hierarchy (SDH)
h.digital subscriber line (DSL)
i.ATM permanent virtual circuit (ATM PVC)
provides a pledged minimum transmission rate

Question 41

Provide a high-level description of ATM.

Question 42

Describe five useful applications for SONET technology.

Question 43

What is the role of the frame relay assembler/disassembler (FRAD)in frame relay communications?

Question 44

When you design for connectivity to a WAN,what five factors should you consider to determine the technologies you should use?

Question 45

Compare and contrast a DSL adapter with a cable modem.

Question 46

Provide an overview of the MPLS technology.

Question 47

Describe the second layer of a SONET network.

Question 48

Describe an ATM switched virtual circuit (ATM SVC).

Question 49

Write a summary description of voice over frame relay (VoFR).