GATE 2019 - Computer Network Quiz-6 (Application Layer ) (App update required to attempt this test) for GATE & PSU CS Exams

Question 1

A graphical HTML browser resident at a network client machine Q accesses a static HTML webpage from a HTTP server S. The static HTML page has exactly one static embedded image which is also at S. Assuming no caching, which one of the following is correct aboutthe HTML webpage loading (including the embedded image)?

Question 2

Consider the following statements.

(a) TCP is connection-oriented protocol and UDP is connectionless protocol.

(b) SMTP work on Port no 27 and POP work on port no

(c) FTP is stateless protocol while HTTP is state-ful protocol.

(d) FTP is OUT OF BAND protocol while HTTP is IN BAND protocol.

The number of correct statement is ________?

Question 3

A system Jarvis requested for a specific site "gradeup.co", in return to this request it got the error as "LOOKUP FAILED". Now consider the following services:
1) SMTP
2) TCP
3) UDP
4) DNS
Which of the above service(s) are failed when we get the error as "LOOKUP FAILED"

Question 4

Which of the following is true about SMTP protocol?

: It can send image files with the help of POP3

: It can send image files with the help of IMAP4

: IMAP4 is more secure than POP3 for retrieving information from server.

Question 5

Consider a selective repeat sliding window protocol that uses a frame size of 1 KB to send data on a 1.5 Mbps link with a one-way latency of 50 msec. To achieve a link utilization of 60%, the minimum number of bits required to represent the sequence number field is ________.

Question 6

Identify the correct order in which the following actions take place in an interaction between a web browser and a web server.
1) The web browser requests a webpage using HTTP.
2) The web browser establishes a TCP connection with the web server.
3) The web server sends the requested webpage using HTTP.
4) The web browser resolves the domain name using DNS.