Chapter 9: Wide Area Networks (WAN) Complete Exam Questions And Correct Detailed Answers.
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Course
WAN.
Institution
WAN.
Wide Area Networks (WANs) - correct answer Run long distances
Connect different offices in different cities or countries or different buildings in the same city
WANs are rented/leased through? - correct answer Common carriers such as AT&T
Dedicated-circuit network (private line ser...
Wide Area Networks (WANs) - correct answer Run long distances
Connect different offices in different cities or countries or different buildings in the same city
WANs are rented/leased through? - correct answer Common carriers such as AT&T
Dedicated-circuit network (private line services) - correct answer User leases circuit from carrier for
exclusive 24/7 use
Private network but managed by carrier
Channel Service Unit (CSU) / Data Service Unit (DSU) - correct answer WAN equivalent of a NIC in a
LAN
Takes outgoing packets and translate it to use the data link layer and network protocols used in the
WAN
How are dedicated-circuit networks charged? - correct answer Flat fee/month with unlimited use of
the circuit
Why do dedicated-circuit networks require careful planning in terms of locations and capacity
purchased? - correct answer Changing your contract/plan could be expensive and lead to rewiring
and a new contract
Ring Architecture - correct answer Connects all computers in a closed loop
Full-duplex and half-duplex so messages flow either way
Disadvantage of a ring architecture - correct answer Messages can take a long time to travel
Star Architecture - correct answer Connects all computers to one central computer that routes
messages
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