When is a system in safe state?

Correct Answer: All of above

Correct Answer: soundex() The soundex() function calculates the soundex key of a string A soundex key is a four character long alphanumeric string that represent English pronunciation of a word he soundex() function can be used for spelling applications < ?php $str = "hello"; echo soundex($str); ? > metaphone() The metaphone() function calculates the metaphone key of a string A metaphone key represents how a string sounds if said by an English speaking person The metaphone() function can be used for spelling applications < ?php echo metaphone("world"); ? >

Correct Answer: Windows

Explanation:

Windows operating system uses the NTFS file system.

Correct Answer: C++

Explanation:

C++ is not an Operating System.

 

An Operating System is a collection of system programs that manages all the other programs application programs in a computer as well as the allocation and use of hardware resources such as the CPU, Memory and the Hard Disk Drive.

It acts as an interface between the hardware and the user level program.

It controls and facilitates the overall operation of a computer. 

 

Here

UNIX : UNIX is a popular multi-user, multitasking operating system (OS) developed at Bell Labs.

 

Windows NT : Windows NT is a family of operating systems produced by Microsoft, the first version of which was released in July 1993.

 

DOS : DOS is Disk Operating System. The term DOS can refer to any operating system.

 

C++ : C++ is a programming language and computing platform.

 

Hence, C++ is not an Operating System.

Correct Answer: Computer program

Explanation:

A computer program is a collection of instructions that performs a specific task when executed by a computer

Correct Answer: Local replacement means that an incoming page is brought in only to the relevant process address space Global replacement policy allows any page frame from any process to be replaced The latter is applicable to variable partitions model only

Correct Answer: With demand paging, a page is brought into memory only when a location on that page is actually referenced during execution With pre-paging, pages other than the one demanded by a page fault are brought in The selection of such pages is done based on common access patterns, especially for secondary memory devices

Correct Answer: The perfect paging size varies from system to system, so there is no single best when it reaches to page size There are several factors to consider in order to come up with a fitting page size, such as paging time, page table, and its effect on the total performance of the operating system

Correct Answer: Stack Pointer Index Registers Accumulators General Purpose Registers

Correct Answer: Cookies are small pieces of information that are stored in a browser It keeps track of user preference, like what sites are visited, what keywords are used, among others