CSCI 379 Final || Questions and Correct Detailed Answers.
Choose the application that uses TCP in the transport layer:
a. Email
b. Web Browsing
c. Internet Telephony
d. a and c above
e. a and b above correct answers E. a and b above
Which one of the following uses a proprietary protocol?
a. HTTP
b. SMTP
c. Skype
d. None of the above correct answers c. Skype
Which one of the following is unguided media?
a. 4G cellular
b. Coaxial Cable
c. Fiber Optic Cable
d. Twisted Pair Cable correct answers a. 4G Cellular
The transfer of an html file from one host to another is:
a. loss-tolerant and time sensitive
b. loss-intolerant and time sensitive
c. loss-intolerant and time insensitive
d. loss-tolerant and time insensitive correct answers c. loss-intolerant and time insensitive
, Suppose a client sends an HTTP request message with the If-modified-since: header. Suppose the
object in a server has not changed since the last time a client retrieved the object. Then the server
will send a response message with the status code:
a. 200 OK
b. 404 not found
c. 304 Not modified
d. none of the above correct answers c. 304 not Modified
List the layers of the internet protocol stack in order. What layer in the Internet Protocol Stack
does the router process? correct answers Application
Transport
Network
Link
Physical
Explain how web caching works and how does it help in improving response time for users.
correct answers
TCP applies fast retransmit to a segment when:
a. it estimates unusually large RTTs
b. the segment's time expires
c. when it receives three ACKs for an earlier segment
d. none of the above correct answers c. When it receives three ACKs for an earlier segment
UDP has which of the following characteristics:
e. three-way hand shake for connection establishment
f. connection state at the server
Choose the application that uses TCP in the transport layer:
a. Email
b. Web Browsing
c. Internet Telephony
d. a and c above
e. a and b above correct answers E. a and b above
Which one of the following uses a proprietary protocol?
a. HTTP
b. SMTP
c. Skype
d. None of the above correct answers c. Skype
Which one of the following is unguided media?
a. 4G cellular
b. Coaxial Cable
c. Fiber Optic Cable
d. Twisted Pair Cable correct answers a. 4G Cellular
The transfer of an html file from one host to another is:
a. loss-tolerant and time sensitive
b. loss-intolerant and time sensitive
c. loss-intolerant and time insensitive
d. loss-tolerant and time insensitive correct answers c. loss-intolerant and time insensitive
, Suppose a client sends an HTTP request message with the If-modified-since: header. Suppose the
object in a server has not changed since the last time a client retrieved the object. Then the server
will send a response message with the status code:
a. 200 OK
b. 404 not found
c. 304 Not modified
d. none of the above correct answers c. 304 not Modified
List the layers of the internet protocol stack in order. What layer in the Internet Protocol Stack
does the router process? correct answers Application
Transport
Network
Link
Physical
Explain how web caching works and how does it help in improving response time for users.
correct answers
TCP applies fast retransmit to a segment when:
a. it estimates unusually large RTTs
b. the segment's time expires
c. when it receives three ACKs for an earlier segment
d. none of the above correct answers c. When it receives three ACKs for an earlier segment
UDP has which of the following characteristics:
e. three-way hand shake for connection establishment
f. connection state at the server
