CORNELL CS 4410 - 2015fa_prelim2_soln (11 pages)

Previewing pages 1, 2, 3, 4 of 11 page document View the full content.
View Full Document

2015fa_prelim2_soln



Previewing pages 1, 2, 3, 4 of actual document.

View the full content.
View Full Document
View Full Document

2015fa_prelim2_soln

37 views


Pages:
11
School:
Cornell University
Course:
Cs 4410 - Operating Systems

Unformatted text preview:

CS 4410 Operating Systems Prelim 2 Fall 2015 Profs Bracy and Van Renesse NAME NetID This is a closed book examination You have 120 minutes No electronic devices of any kind are allowed You must fill in your name and NETID above and at the top of each odd numbered page If you fail to do so we will take off 1 point for each omission Show your incomplete work for partial credit Make any other assumptions as necessary and document them Brevity is key Please write your solutions within the provided boxes as much as possible Write clearly Use the scratch paper at the end if you need to practice your answer first Question Points Possible 0 Omitting Name or NetID 2 1 Multiple Choice 20 2 Alternating Bit Protocol 20 3 Hand over Hand 20 4 Oldie but Goodie 20 5 All s Well That Ends Well 20 20 pts 1 Multiple Choice Questions 2 a Networking Which of the following are true of UDP Select all that apply A UDP is reliable B UDP is ordered C UDP has a smaller header than TCP D UDP controls network congestion E UDP is the predominant protocol for all web traffic 3 b RAID Recall that RAID Level 1 mirrors disks In the picture there are four stripes each of which is mirrored once Which of the following statements about this RAID Level 1 set up are true Select all that apply A RAID Level 1 can always detect when a single bit flips B RAID Level 1 can always detect and correct when a single bit flips C RAID Level 1 can always detect when two bits flip note that the two bits may or may not be on different disks D RAID Level 1 can always detect and correct when two bits flip E RAID Level 1 supports a 2x read performance over an un mirrored disk even while detecting bit flip errors 2 c Caching and Page Tables Which of the following statements about caching and page tables are true Select all that apply A A Page Table is a cache for memory B A Level 2 Cache is a cache for a Level 1 cache C A 2 Level Page Table is a cache for a 1 Level Page Table D A TLB is a cache for a Page Table E DRAM can be



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view 2015fa_prelim2_soln and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view 2015fa_prelim2_soln and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?