NWC203c Course 3 Questions And Answers With Verified Solutions
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Course
NWC203c
Institution
NWC203c
NWC203c Course 3 Questions And Answers With Verified Solutions
Which layer LAN bridges work on?
A. Transport layer
B. Network layer
C. Medium access control
D. None of above ANS C
( 2 Answers )
One can use repeaters, bridges and routers to interconnect two LANs. Which of the following a...
NWC203c Course 3 Questions And Answers With
Verified Solutions
Which layer LAN bridges work on?
A. Transport layer
B. Network layer
C. Medium access control
D. None of above ANS C
( 2 Answers )
One can use repeaters, bridges and routers to interconnect two LANs. Which of the following
approaches will make local traffic stay in its own LAN?
A. repeaters
B. routers
C. bridges
D. All of the above ANS BC
Of the following network layer functions, which one is optional?
A. Routing
B. Forwarding
C. Congestion control
D. None of the above ANS C
Of the following, which is a basic function of transparent bridge?
A. All of the above
,B. Learns where stations are attached to the LAN
C. Prevents loops in the topology
D .Forwards frames from one LAN to another ANS A
It is possible for a network layer to provide a choice of services to the user of the network. Which of
following the IP network layer offers
A. All of the above
B. connection-oriented transfer of packets with delay guarantee
C. Best-effort connectionless service
D. connection-oriented reliable stream service ANS C
( 3 Answers )
The network layer is considered the most complex layer because of the following reasons
A. Requires coordinated actions of multiple, geographically distributed network elements
B. Responsible for displaying received information to users
C. Challenges such as addressing and routing
D. User scalability ANS ACD
An end-to-end function is best implemented at a lower level than at a higher level
A. True
B. False ANS B
Which of the following is an essential network function
A. Forwarding
B. Routing
, C. Priority and scheduling
D. All of the above ANS D
In network layer, which of the following statement is true for packet networks
A. Individual packet streams are highly bursty
B. User demand can undergo dramatic change
C. Internet structure is highly decentralized
D. All of the above ANS D
The main purpose of access multiplexer is to combine the typically bursty traffic flows from the
individual computers into aggregate flows
A. True
B. False ANS A
Which of the following functions can a home router perform?
A. Private IP addresses in home by network address translation
B. All of the above
C. Local area network access using WiFi
D. Single global IP address using DHCP ANS B
Consider a three hop network from the source to the destination. Let m be the packet transmission
time at each hop. Let n be the propagation delay at each hop. Assume there is no queuing delay and
processing time at each hop. Based on store-and-forward, what is the total time for the packet to be
transmitted to the destination?
A. m + n
B. 3m + n
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