.............. 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. A) Synchronization B) Mutual Exclusion C) Dead lock D) Starvation

B) Mutual Exclusion
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1 Answer

Answer :

B) Mutual Exclusion
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Related questions

................ is the ability of multiple process to co-ordinate their activities by exchange of information A) Synchronization B) Mutual Exclusion C) Dead lock D) Starvation

Description : ................ is the ability of multiple process to co-ordinate their activities by exchange of information A) Synchronization B) Mutual Exclusion C) Dead lock D) Starvation

Last Answer : A) Synchronization

.............. refers to a situation in which a process is ready to execute but is continuously denied access to a processor in deference to other processes. A) Synchronization B) Mutual Exclusion C) Dead lock D) Starvation

Description : .............. refers to a situation in which a process is ready to execute but is continuously denied access to a processor in deference to other processes. A) Synchronization B) Mutual Exclusion C) Dead lock D) Starvation

Last Answer : D) Starvation

……………. Can be defined as the permanent blocking of a set of processed that either complete for system resources or communicate with each other. A) Deadlock B) Permanent lock C) Starvation D) Mutual exclusion

Description : ……………. Can be defined as the permanent blocking of a set of processed that either complete for system resources or communicate with each other. A) Deadlock B) Permanent lock C) Starvation D) Mutual exclusion

Last Answer : A) Deadlock

………………. Techniques can be used to resolve conflicts, such as competition for resources, and to synchronize processes so that they can cooperate. A) Mutual Exclusion B) Busy Waiting C) Deadlock D) Starvation

Description : ………………. Techniques can be used to resolve conflicts, such as competition for resources, and to synchronize processes so that they can cooperate. A) Mutual Exclusion B) Busy Waiting C) Deadlock D) Starvation

Last Answer : A) Mutual Exclusion

…………… is a condition in which there is a set of concurrent processes, only one of which is able to access a given resource or perform a given function at any time. A) Mutual Exclusion B) Busy Waiting C) Deadlock D) Starvation

Description : …………… is a condition in which there is a set of concurrent processes, only one of which is able to access a given resource or perform a given function at any time. A) Mutual Exclusion B) Busy Waiting C) Deadlock D) Starvation

Last Answer : A) Mutual Exclusion

.................. refers to the ability of an operating system to support multiple threads of execution with a single process. A) Multithreading B) Multiprocessing C) Multiexecuting D) Bi-threading

Description : .................. refers to the ability of an operating system to support multiple threads of execution with a single process. A) Multithreading B) Multiprocessing C) Multiexecuting D) Bi-threading

Last Answer : A) Multithreading

Match the following. i) Mutual exclusion a) A process may hold allocated resources while waiting assignment. ii) Hold and wait b) No resource can be forcibly removed from a process holding it. iii) No preemption c) Only one process may use a resource at a time. A) i-a, ii-b, iii-c B) i-a, ii-c, iii-b C) i-b, ii-c, iii-a D) i-c, ii-a, iii-b

Description : Match the following. i) Mutual exclusion a) A process may hold allocated resources while waiting assignment. ii) Hold and wait b) No resource can be forcibly removed from a process holding it. iii) No preemption c) Only one process may use ... , ii-c, iii-b C) i-b, ii-c, iii-a D) i-c, ii-a, iii-b

Last Answer : D) i-c, ii-a, iii-b

Dining Philosopher's problem is a: (A) Producer-Consumer problem (B) Classical IPC problem (C) Starvation problem (D) Synchronization primitive

Description : Dining Philosopher's problem is a: (A) Producer-Consumer problem (B) Classical IPC problem (C) Starvation problem (D) Synchronization primitive

Last Answer : (B) Classical IPC problem

A virtual memory based memory management algorithm partially swaps out a process. This is an example of (A) short term scheduling (B) long term scheduling (C) medium term scheduling (D) mutual exclusion

Description : A virtual memory based memory management algorithm partially swaps out a process. This is an example of (A) short term scheduling (B) long term scheduling (C) medium term scheduling (D) mutual exclusion

Last Answer : (C) medium term scheduling

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 A) i, ii and iii only B) ii, iii and iv only C) i, iii and iv only D) All i, ii, iii and iv

Description : 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 A) i, ii and iii only B) ii, iii and iv only C) i, iii and iv only D) All i, ii, iii and iv

Last Answer : D) All i, ii, iii and iv

A direct method of deadlock prevention is to prevent the occurrence of ………….. A) Mutual exclusion B) Hold and wait C) Circular waits D) No preemption

Description : A direct method of deadlock prevention is to prevent the occurrence of ………….. A) Mutual exclusion B) Hold and wait C) Circular waits D) No preemption

Last Answer : C) Circular waits

A direct method of deadlock prevention is to prevent the occurrences of ................... A) Mutual exclusion B) Hold and wait C) Circular waits D) No preemption

Description : A direct method of deadlock prevention is to prevent the occurrences of ................... A) Mutual exclusion B) Hold and wait C) Circular waits D) No preemption

Last Answer : C) Circular waits

State true or false. i) Unix, support multiple user process but only support one thread per process. ii) A java run time environment is an example of a system of one process with multiple threads. A) True, False B) True, True C) False, True D) False, False

Description : State true or false. i) Unix, support multiple user process but only support one thread per process. ii) A java run time environment is an example of a system of one process with multiple threads. A) True, False B) True, True C) False, True D) False, False

Last Answer : B) True, True

The................. layer is responsible for resolving access to the shared media or resources. A) Physical B) Mac sub layer C) Network D) Transport

Description : The................. layer is responsible for resolving access to the shared media or resources. A) Physical B) Mac sub layer C) Network D) Transport

Last Answer : B) Mac sub layer

The ……………… layer is responsible for resolving access to the shared media or resources. A) Physical B) Mac sub layer C) Network D) Transpor

Description : The ……………… layer is responsible for resolving access to the shared media or resources. A) Physical B) Mac sub layer C) Network D) Transpor

Last Answer : B) Mac sub layer

Mutual exclusion problem occurs between:a) processes that share resourcesb) processes that do not use the same resourcesc) two disjoint processes that do not interactd) None of The Above

Description : Mutual exclusion problem occurs between: a) processes that share resources b) processes that do not use the same resources c) two disjoint processes that do not interact d) None of The Above

Last Answer : a) processes that share resources

________is a multiple-access method in which the available bandwidthof a link is shared in time, frequency, or through code, between different stations. A) Random access B) Controlledaccess C) Channelization D) none of the above

Description : ________is a multiple-access method in which the available bandwidthof a link is shared in time, frequency, or through code, between different stations. A) Random access B) Controlledaccess C) Channelization D) none of the above

Last Answer : Channelization

A specific editor has 200 K of program text, 15 K of initial stack, 50 K of initialized data, and 70 K of bootstrap code. If five editors are started simultaneously, how much physical memory is needed if shared text is used ? (A) 1135 K (B) 335 K (C) 1065 K (D) 320 K

Description : A specific editor has 200 K of program text, 15 K of initial stack, 50 K of initialized data, and 70 K of bootstrap code. If five editors are started simultaneously, how much physical memory is needed if shared text is used ? (A) 1135 K (B) 335 K (C) 1065 K (D) 320 K

Last Answer : (B) 335 K

A portion of the Polymorphic virus, generally called a …………………….. , creates, a random encryption, key to encrypt the remainder of the virus. A) mutual engine B) mutation engine C) multiple engine D) polymorphic engine

Description : A portion of the Polymorphic virus, generally called a …………………….. , creates, a random encryption, key to encrypt the remainder of the virus. A) mutual engine B) mutation engine C) multiple engine D) polymorphic engine

Last Answer : C) multiple engine

Critical Region is: a) a set of instructions that access common shared resources which exclude one another in time b) the portion of the main memory which can be accessed only by one process at a time. c) Both of The Above d) None of The Above

Description : Critical Region is: a) a set of instructions that access common shared resources which exclude one another in time b) the portion of the main memory which can be accessed only by one process at a time. c) Both of The Above d) None of The Above

Last Answer : a) a set of instructions that access common shared resources which exclude one another in time

Which of the following statements concerning Object-Oriented databases is FALSE? (A) Objects in an object-oriented database contain not only data but also methods for processing the data. (B) Object-oriented databases store computational instructions in the same place as the data. (C) Object-oriented databases are more adapt at handling structures (analytical) data than relational databases. (D) Object-oriented databases store more types of data than relational databases and access that data faster.

Description : Which of the following statements concerning Object-Oriented databases is FALSE? (A) Objects in an object-oriented database contain not only data but also methods for processing the data. (B ... Object-oriented databases store more types of data than relational databases and access that data faster.

Last Answer : (C) Object-oriented databases are more adapt at handling structures (analytical) data than relational databases.

Explain Shared memory, Mutex, Message passing and Dead lock.

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Consider a system with twelve magnetic tape drives and three processes P1, P2 and P3. Process P1 requires maximum ten tape drives, process P2 may need as many as four tape drives and P3 may need upto nine tape drives. Suppose that at time t1, process P1 is holding five tape drives, process P2 is holding two tape drives and process P3 is holding three tape drives. At time t1, system is in: (A) safe state (B) unsafe state (C) deadlocked state (D) starvation state

Description : Consider a system with twelve magnetic tape drives and three processes P1, P2 and P3. Process P1 requires maximum ten tape drives, process P2 may need as many as four tape drives and P3 may need upto nine ... , system is in: (A) safe state (B) unsafe state (C) deadlocked state (D) starvation state

Last Answer : Answer: B

Which of the following scheduling algorithms may cause starvation? a. First-come-first-served b. Round Robin c. Priority d. Shortest process next e. Shortest remaining time first (1) a, c and e (2) c, d and e (3) b, d and e (4) b, c and d

Description : Which of the following scheduling algorithms may cause starvation? a. First-come-first-served b. Round Robin c. Priority d. Shortest process next e. Shortest remaining time first (1) a, c and e (2) c, d and e (3) b, d and e (4) b, c and d

Last Answer : Answer: 2

State whether the following statement is true. i) It takes less time to terminate a thread than a process. ii) Threads enhance efficiency in communication between different executing programs. A) i-True, ii-False B) i-True, ii-True C) i-False, ii-True D) i-False, ii-False

Description : State whether the following statement is true. i) It takes less time to terminate a thread than a process. ii) Threads enhance efficiency in communication between different executing programs. A) i-True, ii-False B) i-True, ii-True C) i-False, ii-True D) i-False, ii-False

Last Answer : B) i-True, ii-True

Consider a system having ‘m’ resources of the same type. These resources are shared by three processes P1, P2 and P3 which have peak demands of 2, 5 and 7 resources respectively. For what value of ‘m’ deadlock will not occur? (A) 70 (B) 14 (C) 13 (D) 7

Description : Consider a system having ‘m’ resources of the same type. These resources are shared by three processes P1, P2 and P3 which have peak demands of 2, 5 and 7 resources respectively. For what value of ‘m’ deadlock will not occur? (A) 70 (B) 14 (C) 13 (D) 7

Last Answer : (B) 14

It is better to use files than a DBMS when there are (A) Stringent real-time requirements. (B) Multiple users wish to access the data. (C) Complex relationships among data. (D) All of the above. t

Description : It is better to use files than a DBMS when there are (A) Stringent real-time requirements. (B) Multiple users wish to access the data. (C) Complex relationships among data. (D) All of the above.

Last Answer : (B) Multiple users wish to access the data.

Which of the following is/are the functions of operating system? i) Sharing hardware among users. ii) Allowing users to share data among themselves. iii) Recovering from errors. iv) Preventing users from interfering with one another. v) Scheduling resources among users. A) i, ii, iii and iv only B) ii, iii, iv and v only C) i, iii, iv and v only D) All i, ii, iii, iv and v

Description : Which of the following is/are the functions of operating system? i) Sharing hardware among users. ii) Allowing users to share data among themselves. iii) Recovering from errors. iv) Preventing users from interfering with one another. ... only C) i, iii, iv and v only D) All i, ii, iii, iv and v

Last Answer : D) All i, ii, iii, iv and v

One of the disadvantages of user level threads compared to Kernel level threads is (1) If a user level thread of a process executes a system call, all threads in that process are blocked. (2) Scheduling is application dependent. (3) Thread switching doesn’t require kernel mode privileges. (4) The library procedures invoked for thread management in user level threads are local procedures.

Description : One of the disadvantages of user level threads compared to Kernel level threads is (1) If a user level thread of a process executes a system call, all threads in that process are ... privileges. (4) The library procedures invoked for thread management in user level threads are local procedures.

Last Answer : If a user level thread of a process executes a system call, all threads in that process are blocked.

Changing the relationship with and services provided to customers in such a way that they will not think of changing suppliers is called …………. A) Lock in customers B) Lock out customers C) Lock in competitors D) Lock out competitors

Description : Changing the relationship with and services provided to customers in such a way that they will not think of changing suppliers is called …………. A) Lock in customers B) Lock out customers C) Lock in competitors D) Lock out competitors

Last Answer : A) Lock in customers

emaphore provides mutual exclusion for accesses to the buffer pool and is initialized to the value: a. Mutex b. Mutual Cc. Memory d. __ Allof these

Description : emaphore provides mutual exclusion for accesses to the buffer pool and is initialized to the value: a. Mutex b. Mutual Cc. Memory d. __ Allof these

Last Answer : Mutex

Which are the characteristics of deadlocks. a. Mutual exclusion b. Hold and wait Cc. No pre-emption d. = Circular wait e. Allof these

Description : Which are the characteristics of deadlocks. a. Mutual exclusion b. Hold and wait Cc. No pre-emption d. = Circular wait e. Allof these

Last Answer : e. Allof these

Which are the condition that should be met in order to produce a deadlock. a. Mutual exclusion b. Hold and Wait Cc. No preemption d. Circular wait e. Allofthese

Description : Which are the condition that should be met in order to produce a deadlock. a. Mutual exclusion b. Hold and Wait Cc. No preemption d. Circular wait e. Allofthese

Last Answer : e. Allofthese

Necessary conditions for deadlock are: a) Non preemptive and circular wait b) Mutual exclusion and partial allocation c) Both of The Above d) None of The Above

Description : Necessary conditions for deadlock are: a) Non preemptive and circular wait b) Mutual exclusion and partial allocation c) Both of The Above d) None of The Above

Last Answer : b) are privileged calls that are used to perform resource management functions, which are controlled by the operating system

Which is the main function of transport layer? A) Node to node delivery B) End to end delivery C) Synchronization d) Updating and maintaining routing tables

Description : Which is the main function of transport layer? A) Node to node delivery B) End to end delivery C) Synchronization d) Updating and maintaining routing tables

Last Answer : B) End to end delivery

Synchronization is achieved by a timing device called a ................. which generates a periodic train of .................. (A) clock generator, clock pulse (B) master generator, clock pulse (C) generator, clock (D) master clock generator, clock pulse

Description : Synchronization is achieved by a timing device called a ................. which generates a periodic train of .................. (A) clock generator, clock pulse (B) master generator, clock pulse (C) generator, clock (D) master clock generator, clock pulse

Last Answer : Answer: A and D

The start and stop bits are used in serial communication for (A) error detection (B) error correction (C) synchronization (D) slowing down the communication

Description : The start and stop bits are used in serial communication for (A) error detection (B) error correction (C) synchronization (D) slowing down the communication

Last Answer : (C) synchronization 

Which of the following is not associated with the session layer? (A) Dialog control (B) Token management (C) Semantics of the information transmitted (D) Synchronization

Description : Which of the following is not associated with the session layer? (A) Dialog control (B) Token management (C) Semantics of the information transmitted (D) Synchronization

Last Answer : (C) Semantics of the information transmitted 

The component of marketing implementation that refers to work processes, procedures, and the way that information is structured is A)marketing structure. B)marketing strategy. C)organisational resources. D)shared goals. E)systems.

Description : The component of marketing implementation that refers to work processes, procedures, and the way that information is structured is A)marketing structure. B)marketing strategy. C)organisational resources. D)shared goals. E)systems.

Last Answer : E)systems.

Which of the following are the principles tasks of the linker? I. Resolve external references among separately compiled program units. II. Translate assembly language to machine code. III. Relocate code and data relative to the beginning of the program. IV. Enforce access-control restrictions on system libraries. (A) I and II (B) I and III (C) II and III (D) I and IV

Description : Which of the following are the principles tasks of the linker? I. Resolve external references among separately compiled program units. II. Translate assembly language to machine code. III. Relocate code and data relative to the beginning of ... (A) I and II (B) I and III (C) II and III (D) I and IV

Last Answer : (B) I and III

Which of the following statements is not true about disk-arm scheduling algorithms ? (A) SSTF (shortest seek time first) algorithm increases performance of FCFS. (B) The number of requests for disk service are not influenced by file allocation method. (C) Caching the directories and index blocks in main memory can also help in reducing disk arm movements. (D) SCAN and C-SCAN algorithms are less likely to have a starvation problem.

Description : Which of the following statements is not true about disk-arm scheduling algorithms ? (A) SSTF (shortest seek time first) algorithm increases performance of FCFS. (B) The number of requests for disk ... arm movements. (D) SCAN and C-SCAN algorithms are less likely to have a starvation problem.

Last Answer : (B) The number of requests for disk service are not influenced by file allocation method.

Which lock is more serious than indefinite postponement or starvation because it affect more than one job: a. Deadlock b. Spinelock c. Both d. None of these

Description : Which lock is more serious than indefinite postponement or starvation because it affect more than one job: a. Deadlock b. Spinelock c. Both d. None of these

Last Answer : a. Deadlock

…………… are very effective because a mode switch is not required to switch from one thread to another. A) Kernel-level threads B) User-level threads C) Alterable threads D) Application level threads

Description : …………… are very effective because a mode switch is not required to switch from one thread to another. A) Kernel-level threads B) User-level threads C) Alterable threads D) Application level threads

Last Answer : B) User-level threads

WOW32 is a: (A) Win 32 API library for creating processes and threads. (B) Special kind of file system to the NT name space. (C) Kernel - mode objects accessible through Win32 API (D) Special execution environment used to run 16 bit Windows applications on 32 - bit machines.

Description : WOW32 is a: (A) Win 32 API library for creating processes and threads. (B) Special kind of file system to the NT name space. (C) Kernel - mode objects accessible through Win32 API (D) Special execution environment used to run 16 bit Windows applications on 32 - bit machines.

Last Answer : (D) Special execution environment used to run 16 bit Windows applications on 32 - bit machines.

Which is the protocol for performing RPCs between applications in a language and system independent way? (A) Hyper Text Transmission Protocol (HTTP) (B) Simple Network Management Protocol (SNMP) (C) Simple Object Access Protocol (SOAP) (D) Simple Mail Transfer Protocol (SMTP)

Description : Which is the protocol for performing RPCs between applications in a language and system independent way? (A) Hyper Text Transmission Protocol (HTTP) (B) Simple Network Management Protocol (SNMP) (C) Simple Object Access Protocol (SOAP) (D) Simple Mail Transfer Protocol (SMTP)

Last Answer : (C) Simple Object Access Protocol (SOAP)

mutual funds provide stability to share prices safety to investors and resources?

Description : mutual funds provide stability to share prices safety to investors and resources?

Last Answer : Hedge funds are not mutual funds as hedge funds cannot be sold to the general public

In UNIX operating system, when a process creates a new process using the fork() system call, which of the following state is shared between the parent process and child process? (A) Heap (B) Stack (C) Shared memory segments (D) Both Heap and Stack

Description : In UNIX operating system, when a process creates a new process using the fork() system call, which of the following state is shared between the parent process and child process? (A) Heap (B) Stack (C) Shared memory segments (D) Both Heap and Stack

Last Answer : (C) Shared memory segments 

Point out the wrong statement. a) Abstraction enables the key benefit of cloud computing: shared, ubiquitous access b) Virtualization assigns a logical name for a physical resource and then provides a pointer to that physical resource when a request is made c) All cloud computing applications combine their resources into pools that can be assigned on demand to users d) All of the mentioned

Description : Point out the wrong statement. a) Abstraction enables the key benefit of cloud computing: shared, ubiquitous access b) Virtualization assigns a logical name for a physical resource and then provides a ... their resources into pools that can be assigned on demand to users d) All of the mentioned

Last Answer : All cloud computing applications combine their resources into pools that can be assigned on demand to users

Point out the wrong statement. a) Abstraction enables the key benefit of cloud computing: shared, ubiquitous access b) Virtualization assigns a logical name for a physical resource and then provides a pointer to that physical resource when a request is made c) All cloud computing applications combine their resources into pools that can be assigned on demand to users d) All of the mentioned

Description : Point out the wrong statement. a) Abstraction enables the key benefit of cloud computing: shared, ubiquitous access b) Virtualization assigns a logical name for a physical resource and then provides a ... their resources into pools that can be assigned on demand to users d) All of the mentioned

Last Answer : All cloud computing applications combine their resources into pools that can be assigned on demand to users

Point out the wrong statement. a) Abstraction enables the key benefit of cloud computing: shared, ubiquitous access b) Virtualization assigns a logical name for a physical resource and then provides a pointer to that physical resource when a request is made c) All cloud computing applications combine their resources into pools that can be assigned on demand to users d) All of the mentioned

Description : Point out the wrong statement. a) Abstraction enables the key benefit of cloud computing: shared, ubiquitous access b) Virtualization assigns a logical name for a physical resource and then provides a ... their resources into pools that can be assigned on demand to users d) All of the mentioned

Last Answer : All cloud computing applications combine their resources into pools that can be assigned on demand to users