NWC203c (100caudau)

Which of the following networks use store-and-forward switching operation? (2 answers)

• a.Telephone networks

• b. Wireless Networks

• c. Computer networks

• d. Telegraph 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

Which of the following networks can be connection-oriented? (2 answers)
2 / 2 points

• a. Telegraph networks

• b. Computer networks

• c. Telephone networks

• d. All of the above

  
  

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

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. TTP

• d. None of the above

A network used to join the individual networks at different sites into one extended network is called

• a. LAN

• b. PAN

• c. SAN

• d. VPN

Upon receipt of a bad segment, UDP?

• a. Retransmission

• b. It does error control

• b. It does error control

• d. It does not do flow and error control

Which of following protocol is HTTP built upon?

• a. TCP

• b. IP

• c. SMTP

• d. UDP

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 maximum length

• d. All of the above

What was the concern of the telephone system that motivated the ARPANET design?

• a. Scalability

• b. Vulnerability

• c. Efficiency

• d. None of the above