How to Create A User Account In Active Directory
[
]
To create a computer account using Active Directory Users and Computers:
Click Start, Point to Administrative Tools, and click Active Directory Users and Computers.
Right click the container in which you want to create the account, point to New, and click Computer.
Type in a unique computer name and select the user or group with permission to join the computer to the domain. The default group is Domain Admins.
If the computer is a pre-Windows 2000 computer select the option to Assign this computer account as a pre-Windows 2000 computer.
If the computer is going to be used as a backup for a domain controller, select the option to Assign this computer as a backup domain controller.
Click OK.
Choose your rating:
Post Ans. View More Ans.
What is a Real-Time System?
[
]
A real time process is a process that must respond to the events within
a certain time period. A real time operating system is an operating
system that can run real time processes successfully.
Choose your rating:
Post Ans. View More Ans.
What is a Safe State and what is its use in deadlock avoidance?
[
]
When a process requests an available resource, system must decide if
immediate allocation leaves the system in a safe state. System is in
safe state if there exists a safe sequence of all processes. Deadlock
Avoidance: ensure that a system will never enter an unsafe state.
Choose your rating:
Post Ans. View More Ans.
What is cache memory?
[
]
Cache memory is random access memory (RAM) that a computer
microprocessor can access more quickly than it can access regular RAM.
As the microprocessor processes data, it looks first in the cache
memory and if it finds the data there (from a previous reading of
data), it does not have to do the more time-consuming reading of data
from larger memory.
Choose your rating:
Post Ans. View More Ans.
What is Context Switch?
[
]
Switching the CPU to another process requires saving the state of the
old process and loading the saved state for the new process. This task
is known as a context switch. Context-switch time is pure overhead,
because the system does no useful work while switching. Its speed
varies from machine to machine, depending on the memory speed, the
number of registers which must be copied, the existed of special
instructions(such as a single instruction to load or store all
registers).
Choose your rating:
Post Ans. View More Ans.
What is CPU Scheduler?
[
]
Selects from among the processes in memory that are ready to execute,
and allocates the CPU to one of them. CPU scheduling decisions may take
place when a process: 1.Switches from running to waiting state.
2.Switches from running to ready state. 3.Switches from waiting to
ready. 4.Terminates. Scheduling under 1 and 4 is non-preemptive. All
other scheduling is preemptive.
Choose your rating:
Post Ans. View More Ans.
What is Dispatcher?
[
]
Dispatcher module gives control of the CPU to the process selected by
the short-term scheduler; this involves: Switching context, Switching
to user mode, Jumping to the proper location in the user program to
restart that program, dispatch latency – time it takes for the
dispatcher to stop one process and start another running.
Choose your rating:
Post Ans. View More Ans.
What is DRAM? In which form does it store data?
[
]
DRAM is not the best, but it’s cheap, does the job, and is available
almost everywhere you look. DRAM data resides in a cell made of a
capacitor and a transistor. The capacitor tends to lose data unless
it’s recharged every couple of milliseconds, and this recharging tends
to slow down the performance of DRAM compared to speedier RAM types.
Choose your rating:
Post Ans. View More Ans.
What is fragmentation? Different types of fragmentation?
[
]
Fragmentation occurs in a dynamic memory allocation system when many of the free blocks are too small to satisfy any request. External Fragmentation:
External Fragmentation happens when a dynamic memory allocation
algorithm allocates some memory and a small piece is left over that
cannot be effectively used. If too much external fragmentation occurs,
the amount of usable memory is drastically reduced. Total memory space
exists to satisfy a request, but it is not contiguous. Internal Fragmentation:
Internal fragmentation is the space wasted inside of allocated memory
blocks because of restriction on the allowed sizes of allocated blocks.
Allocated memory may be slightly larger than requested memory; this
size difference is memory internal to a partition, but not being used.
Choose your rating:
Post Ans. View More Ans.
What is hard disk and what is its purpose?
[
]
Hard disk is the secondary storage device, which holds the data in
bulk, and it holds the data on the magnetic medium of the disk.Hard
disks have a hard platter that holds the magnetic medium, the magnetic
medium can be easily erased and rewritten, and a typical desktop
machine will have a hard disk with a capacity of between 10 and 40
gigabytes. Data is stored onto the disk in the form of files.
Choose your rating:
Post Ans. View More Ans.
