Gate Exam

Let the time taken to switch between user and kernel modes of execution be t1
while the time taken to switch between two processes be t2. Which of the
following is TRUE?
(A) t1 > t2
(B) t1 = t2
(C) t1 < t2
(D) Nothing can be said about the relation between t1 and t2

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Gate Other Question

Consider different activities related to email.
m1: Send an email from a mail client to a mail server
m2: Download an email from mailbox server to a mail client
m3: Checking email in a web browser
Which is the application level protocol used in each activity?

option
(A) m1:HTTP m2:SMTP m3:POP
(B) m1:SMTP m2:FTP m3:HTTP
(C) m1: SMTP m2: POP m3: HTTP
(D) m1: POP m2: SMTP m3:IMAP
A company needs to develop digital signal processing software for one of its
newest inventions. The software is expected to have 40000 lines of code. The
company needs to determine the effort in person-months needed to develop this
software using the basic COCOMO model. The multiplicative factor for this model
is given as 2.8 for the software development on embedded systems, while the
exponentiation factor is given as 1.20. What is the estimated effort in person-months?

option
(A) 234.25
(B) 932.50
(C) 287.80
(D) 122.40