WAN Concepts Flashcards
What must you install between networks and a T1 line for your networks to use the T1 line? SONET MPLS CSU/DSU POTS
CSU/DSU
You have site in your network that is connected to multiple other sites. A single virtual circuit is used to connect all other sites. What type of connection is being used? Packet-switched SONET Point-to-point Point-to-multipoint
Point-to-multipoint
Which of the following are characteristics of MPLS? Select two.
Point-to-multipoint
Point-to-point
Supports variable-length data units.
Adds labels to data units.
Supports variable-length data units.
Adds labels to data units.
If the SONET (OC-1) base rate is 51.84 Mbps, how much data can the Optical Carrier level 12 (OC-12) transfer in one second?
622.06 Mb
CSU/DSU
T3
155 mbps
622.06 Mb
What is the speed of an OC-3 connection? SONET MPLS 155 mbps POTS
155 mbps
Which of the following are characteristics of ATM? Select Two
Point-to-point
Uses fixed-length cells of 53-bytes.
Adds labels to data units.
Point-to-multipoint
Uses fixed-length cells of 53-bytes.
Adds labels to data units.
Which of the following describes the lines used in the local loop for dial-up telephone access? PSTN POTS MPLS T3
POTS
Which type of network establishes a dedicated physical connection between two hosts who need to communicate on the network, not allowing any other host to use the medium until the communication is complete? Circuit-switched PSTN Packet-switched CSU/DSU
Circuit-switched
Which of the following are characteristics of SONET? (Select two)
Transport protocol used for other traffic types.
Dual counter-rotating fiber optic rings.
Uses fixed-length cells of 53-bytes.
T1 lines use two pairs of copper wires.
A single T1 channel can transfer data at 64 Kbps.
Transport protocol used for other traffic types.
Dual counter-rotating fiber optic rings.
Which of the following correctly describes the T1 carrier system? (Select two)
T1 lines use two pairs of copper wires.
A single T1 channel can transfer data at 64 Kbps.
Uses fixed-length cells of 53-bytes.
Adds labels to data units.
T1 lines use two pairs of copper wires.
A single T1 channel can transfer data at 64 Kbps.
You have a series of WAN links that connects to your site to multiple other sites. Each remote site is connected to your site using a dedicated line. What type of connection is being used? Point-to-multipoint Point-to-point SONET POTS
Point-to-point
Which of the following devices is used on a WAN to convert synchronous serial signals into digital signals? POTS MPLS SONET CSU/DSU
CSU/DSU
Which of the following is an WAN technology that allows for interoperability of vendor hardware for fiber optic networking? SONET POTS MPLS PSTN
SONET
Which type of network divides data to be transmitted into small units and then routes these units from the originating system to the destination system, allowing multiple, concurrent communications on the network medium? Point-to-point Packet-switched Circuit-switched POTS
Packet-switched
You are implementing Internet connectivity for a new start-up company. Your client will provide on-line 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?
POTS
T3
PSTN
MPLS
T3
