11.1.7 Practice Questions

Which of the following describe the channels and data transfer rates used for ISDN BRI? (Select Which of the following describe the channels and data transfer rates used for ISDN BRI? (Select two.)
One D channel operating at 64 Kbps
One D channel operating at 16 Kbps
Two B channels operating at 64 Kbps each
23 B channels operating at 64 Kbps each

One D channel operating at 16 Kbps Two B channels operating at 64 Kbps each

What is the speed of an OC-3 connection?
100 Mbps
10 Mbps
622 Mbps
155 Mbps

155 Mbps

Which of the following technologies uses variable-length packets, adds labels to packets as they enter the WAN cloud, and uses the labels to switch packets and prioritize traffic?
ISDN
ATM
MPLS
Frame relay
SONET

Multi protocol Label Switching (MPLS).

To access the internet through the PSTN, what kind of connectivity device must you use?
Modem
DTE
CSU/DSU
Switch
TDM

Modem

Which of the following are characteristics of MPLS? (Select two.)
Uses a committed information rate (CIR)
Adds labels to data units
Is a local loop technology
Supports variable-length data units
Uses fixed-length data units

Adds labels to data units Supports variable-length data units

Which of the following are characteristics of ATM? (Select two.)
Adds labels to data units.
Supports variable-length packets.
Uses POTS in the local loop.
Uses fixed-length cells of 53 bytes.
Connects to the WAN cloud with a CSU/DSU.

Uses fixed-length cells of 53 bytes. Adds labels to data units.

Which of the following are the WAN service provider's responsibility to maintain? (Select four.)
CPE
CO
PSE
Local loop
DCE
DTE

Packet switching exchange (PSE)—equipment inside the WAN cloud. Central office (CO)—equipment that allows access to the PSE. Data circuit-terminating equipment (DCE)——devices that switch data to the WAN. Local loop—wiring that connects the customer to the CO.

Which network type divides transmitted data into smaller pieces and allows multiple communications on the network medium?
Packet-switched
Sliding window
Multiplexed
Frame-based
Circuit-switched

Packet-switched

Which network type establishes a dedicated physical connection between two hosts in order to transmit time-sensitive data?
Sliding window
Frame-based
Multiplexed
Packet-switched
Circuit-switched

Circuit-switched

Which of the following WAN technologies provides packet switching over high-quality digital lines at speeds greater than 1.544 Mbps?
X.25
Frame relay
POTS
ISDN

Frame relay

You are implementing internet connectivity for a new start-up company. Your client will provide online storefronts for retailers. To do this, they have calculated that their internet connection must provide a data rate of at least 20-30 Mbps.Which type of service should you implement?
T3
T1
Fractional T1
Dial-up
ISDN
Integrated T1

T3

Which networking technology creates virtual links between two remote network endpoints by prefixing packets with a header containing one or more labels?
ATM
MPLS
Frame relay
Ethernet

MPLS

You are traveling throughout North America to many metropolitan and rural areas. Which single form of internet connectivity provides the greatest potential connectivity wherever you travel?
PSTN
ISDN
Broadband cable
DSL

PSTN

What must you install between your network and a T1 line for your network to use the T1 line?
Transceiver
Bridge
CSU/DSU
Gateway

CSU/DSU

Which of the following devices is used on a WAN to convert synchronous serial signals into digital signals?
IDS
CSU/DSU
Proxy
Modem

CSU/DSU

11.1.7 Practice Questions - Subjecto.com

11.1.7 Practice Questions

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Which of the following describe the channels and data transfer rates used for ISDN BRI? (Select Which of the following describe the channels and data transfer rates used for ISDN BRI? (Select two.)
One D channel operating at 64 Kbps
One D channel operating at 16 Kbps
Two B channels operating at 64 Kbps each
23 B channels operating at 64 Kbps each

One D channel operating at 16 Kbps Two B channels operating at 64 Kbps each

What is the speed of an OC-3 connection?
100 Mbps
10 Mbps
622 Mbps
155 Mbps

155 Mbps

Which of the following technologies uses variable-length packets, adds labels to packets as they enter the WAN cloud, and uses the labels to switch packets and prioritize traffic?
ISDN
ATM
MPLS
Frame relay
SONET

Multi protocol Label Switching (MPLS).

To access the internet through the PSTN, what kind of connectivity device must you use?
Modem
DTE
CSU/DSU
Switch
TDM

Modem

Which of the following are characteristics of MPLS? (Select two.)
Uses a committed information rate (CIR)
Adds labels to data units
Is a local loop technology
Supports variable-length data units
Uses fixed-length data units

Adds labels to data units Supports variable-length data units

Which of the following are characteristics of ATM? (Select two.)
Adds labels to data units.
Supports variable-length packets.
Uses POTS in the local loop.
Uses fixed-length cells of 53 bytes.
Connects to the WAN cloud with a CSU/DSU.

Uses fixed-length cells of 53 bytes. Adds labels to data units.

Which of the following are the WAN service provider’s responsibility to maintain? (Select four.)
CPE
CO
PSE
Local loop
DCE
DTE

Packet switching exchange (PSE)—equipment inside the WAN cloud. Central office (CO)—equipment that allows access to the PSE. Data circuit-terminating equipment (DCE)——devices that switch data to the WAN. Local loop—wiring that connects the customer to the CO.

Which network type divides transmitted data into smaller pieces and allows multiple communications on the network medium?
Packet-switched
Sliding window
Multiplexed
Frame-based
Circuit-switched

Packet-switched

Which network type establishes a dedicated physical connection between two hosts in order to transmit time-sensitive data?
Sliding window
Frame-based
Multiplexed
Packet-switched
Circuit-switched

Circuit-switched

Which of the following WAN technologies provides packet switching over high-quality digital lines at speeds greater than 1.544 Mbps?
X.25
Frame relay
POTS
ISDN

Frame relay

You are implementing internet connectivity for a new start-up company. Your client will provide online storefronts for retailers. To do this, they have calculated that their internet connection must provide a data rate of at least 20-30 Mbps.Which type of service should you implement?
T3
T1
Fractional T1
Dial-up
ISDN
Integrated T1

T3

Which networking technology creates virtual links between two remote network endpoints by prefixing packets with a header containing one or more labels?
ATM
MPLS
Frame relay
Ethernet

MPLS

You are traveling throughout North America to many metropolitan and rural areas. Which single form of internet connectivity provides the greatest potential connectivity wherever you travel?
PSTN
ISDN
Broadband cable
DSL

PSTN

What must you install between your network and a T1 line for your network to use the T1 line?
Transceiver
Bridge
CSU/DSU
Gateway

CSU/DSU

Which of the following devices is used on a WAN to convert synchronous serial signals into digital signals?
IDS
CSU/DSU
Proxy
Modem

CSU/DSU

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