Which of the following command is used to count number of lines in a file? Select one:

In Linux, what command is used with vi editor to delete a single character? Select one:

Which command is/are used to remove directory in Linux? Select one:

In Linux, which of the following command is used to know last shutdown/reboot date and time? Select one:

In Linux, what file specifies the order in which to use specified name services? Select one:

Which of the following command is used to count number of lines in a file in Linux? Select one:

The system calls in UNIX is written using which language Select one:

In Linux environment, at start of process execution, STDOUT & STDERR Select one:

Which of the following command is used to create file in Linux? Select one:

In Linux, which command is used to list all the files in your current directory (including hidden)? Select one:

How can you add Amit, a new user, to your system? Select one:

In Linux, which among the following interacts directly with system hardware? Select one:

In Linux, what command is used to count the total number of lines, words, and characters contained in a file? Select one:

Which of the following OS is not based on Linux?

The address of a storage location in main memory is the __________ .

__________ is the virtual storage assigned to a process.

__________ is the range of memory addresses available to a process.

The ________ structure indexes page table entries by frame number rather than by virtual page number.

The ________ states the process that owns the page.

A ________ is issued if a desired page is not in main memory.

__________ allows the programmer to view memory as consisting of multiple address spaces.

__________ is transparent to the programmer and eliminates external fragmentation providing efficient use of main memory.

The ________ determines when a page should be brought into main memory.

With ________ pages other than the one demanded by a page fault are brought in.

The ________ policy results in the fewest number of page faults.

A ________ chooses only among the resident pages of the process that generated the page fault in selecting a page to replace.

The ________ algorithm requires a use bit to be associated with each page in memory.

________ is where modified process pages can be written out at the time of replacement, or a precleaning policy can be used, which clusters the output activity by writing out a number of pages at once.

________ is the concept associated with determining the number of processes that will be resident in main memory.

Most of the memory management issues confronting the operating system designer are in the area of paging when segmentation is combined with paging.

One way to counter the potential performance problems of a variable-allocation global scope policy is to use page buffering.

A precleaning policy writes modified pages before their page frames are needed so that pages can be written out in batches.

Segments may be of unequal, indeed dynamic, size.

The PFF policy evaluates the working set of a process at sampling instances based on elapsed virtual time.

The ________ category of external devices are suitable for communicating with the computer user.

The ________ unit is capable of mimicking the processor and of taking over control of the system bus just like a processor.

__________ external devices are suitable for communicating with electronic equipment.

The requested operations and data are converted into appropriate sequences of I/O instructions, channel commands, and controller orders at the __________ layer.

__________ external devices are suitable for communicating with modems.

__________ is a technique that smoothes out peaks in I/O demand.

The advantage of __________ is that it provides extremely high data availability.

The __________ technique is used on a Windows server to optimize the use of threads.

On a moveable-head system, the time it takes to position the head at the track is known as ________.

The __________ technique allows multiple simultaneous I/O requests against a single device or file.

__________ are an efficient way of making consistent snapshots of volumes so that they can be backed up.

RAID 5 is organized in a similar fashion to __________, but is different in the fact that RAID 5 distributes the parity strips across all disks.

The disk scheduling algorithm that implements two sub-queues in a measure to avoid the problem of "arm stickiness" is the __________.

The simplest type of support that the operating system can provide is __________.

The __________ layer deals with the logical structure of files and with the operations that can be specified by users, such as open, close, read, and write.

An objective of the __________ is to provide a standardized set of I/O interface routines to user processes.

A __________ is a collection of similar records.

The essential aspects of a __________ are that the relationships that exist among elements of data are explicit and designed for use by a number of different applications.

An __________ is a control structure that contains the key information needed by the operating system for a particular file.

File systems do not maintain the attributes associated with the files.

All UNIX files have its description stored in a structure called 'inode'. Which of the below fields are not part of the inode?

In Shell scripting what is $*?

How do you get all files with on the 3rd place an r, g or i?

How do you delete a file?

How can you display a list of all files, including the hidden files?

In Shell scripting What does $? Return?

The difference between printf and echo is

#! is called as

What does the command “Get-ChildItem” do in PowerShell?

What is the purpose of the Out-Null command in PowerShell?

Which command is used to set the execution policy in PowerShell?

Which command is used to create a new file in PowerShell?

Which command is used to create a new folder in PowerShell?

Which company introduced PowerShell?

tether

What is the syntax for an if/elseif/else statement in powershell?

How can you remove a variable?

What is the full command for the alias "pwd"?