NWC203c Mooc1 Verified Answers
Question 1
Which of the following networks use store-and-forward switching operation?
A.Telegraph networks
B.Telephone networks
C.Wireless Networks
D.Computer networks ️A.Telegraph networks
D.Computer networks
There are similarities between message s...
Which of the following networks use store-and-forward switching operation?
A.Telegraph networks
B.Telephone networks
C.Wireless Networks
D.Computer networks ✔️A.Telegraph networks
D.Computer networks
There are similarities between message switching and packet switching. Which of following that applies
to packet switching but not to message switching?
A. Variable length of information block
B.Supporting multiple applications
C.Store-and-forward
D.All of the above ✔️B.Supporting multiple applications
Which of the following networks can be connection-oriented?
A.Telegraph networks
B.Computer networks
C.Telephone networks
D.All of the above ✔️B.Computer networks
C.Telephone networks
A protocol is a set of precise and unambiguous rules that governs
A.How two or more communicating entities in a layer are to interact
B.Messages that can be sent and received
,C.Actions that are to be taken when a certain event occurs
D.All of the above ✔️D.All of the above
5.
DNS is a domain-name-service that responds to queries of domain name to IP address or IP address to
domain name. DNS uses services provided by
A.TCP
B.UDP
C.HTTP
D.None of the above ✔️B.UDP
A network used to join the individual networks at different sites into one extended network is called
A.LAN
B.SAN
C.PAN
D.VPN ✔️D.VPN
Upon receipt of a bad segment, UDP?
A.It does flow control
B.It does not do flow and error control
C.Retransmission
D.It does error control ✔️B.It does not do flow and error control
Question 1
Which of following protocol is HTTP built upon?
A.IP
, B.UDP
C.TCP
D.SMTP ✔️C.TCP
Question 2
Which of following requirements are necessary for packet networks to support multiple and diverse
applications?
A.Transfer arbitrary message size
B.Low delay for interactive applications
C.Packets have a maximum length
D.All of the above ✔️D.All of the above
Question 3
What was the concern of the telephone system that motivated the ARPANET design?
A.Scalability
B.Vulnerability
C.Efficiency
D.None of the above ✔️B.Vulnerability
Question 4
Which of the following is an application layer protocol?
A.DNS
B.TCP
C.UDP
D.HTTP ✔️D.HTTP
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