1) Spanning tree T is subgraph of connected graph G if
Ans: Both A and B
2) The following conditions of policy must be present for a deadlock to be possible.
i. Mutual exclusion ii) Hold and wait iii) No preemption iv) Circular wait
Ans: All i, ii, iii and iv
3) Isolation property is also known as.........
Ans: Serializability
4) State whether true or false.
i) Multithreading is useful for application that perform a number of essentially independent tasks that do not be serialized.
ii) An example of multithreading is a database server that listens for and process numerous client request.
Ans: i-True, ii-True
5) With only one process can execute at a time; meanwhile all other process are waiting for the processer. With more than one process can be running simultaneously each on a different processer.
Ans: Multiprogramming, Multiprocessing
6)The Determines when a page should be brought into main memory.
Ans: Fetch policy
7) A direct method of deadlock prevention is to prevent the occurrence of …………..
Ans: Circular waits
8) A thread is a..........
Ans: light weight process
9) is the ability of multiple process to co-ordinate their activities by exchange of information
Ans: Synchronization
10) With a page is brought into main memory only when the reference is made to a location on that page.
Ans: Demand paging
11) The two central themes of modern operating system are...............
Ans: Multiprogramming and Distributed processing
12) Which of the following are the functions of operating system?
i) recovering from errors
ii) facilitating input/output
iii) facilitating parallel operation
iv) sharing hardware among users
v) implementing user interface
Ans: All i, ii, iii, iv and v
13) ensures that once transaction completes successively, the results of the operations become
Ans: durability
14) The policy segments the disks request queue into sub queues of the length N.
Ans: N-Step SCAN
15) File management function of the operating system includes
i) File creation and deletion ii) Disk scheduling iii) Directory creation iv) Mapping file in secondary storage
Ans: i, iii and iv only
16) refers to the ability of multiple process (or threads) to share code, resources or data in
such a way that only one process has access to shared object at a time.
Ans: Mutual Exclusion
17) With A page is written out to secondary memory only when it has been selected for replacement.
Ans: Demand cleaning
18) Can be defined as the permanent blocking of a set of processed that either complete for system resources or communicate with each other.
Ans: Deadlock
19) A process is created and is initially put in the........
Ans: Ready queue
20) provides a larger sized of virtual memory but require virtual memory which provides multidimensional memory.
Ans: Segmentation method
21) Which directory implementation is used in most of the Operating System?
Ans: Tree directory structure
22) Which directory implementation is used in most of the Operating System?
tree directory structure is a large operating system core provides a wide range of services.
Ans: Macro kernel
23) State true of false.
i) With paging, each process is divided into relatively small, fixed-size pages.
ii) Segmentation provides for the use of pieces of varying size.
Ans: Memory management
24) is a large kernel containing virtually the complete operating system, including, scheduling, file system, device drivers and memory management.
Ans: Monolithic kernel
25) Techniques can be used to resolve conflicts, such as competition for resources, and to synchronize processes so that they can cooperate.
Ans: Mutual Exclusion
