MCSE : Security Specialist
41. Windows
Update is a catalog of items such as drivers, patches, the latest
help files, and Internet products that you can download to keep your
computer up to date. You must be logged on as an administrator or a
member of the Administrators group in order to access the Product
Updates section of Windows Update for downloading help files.
42. You create
an ERD by choosing Choose Start -> Programs -> Accessories -> System
Tools -> Backup. Click on the Emergency Repair button. Provide
a blank 31/2 inch Floppy Disk when prompted. Note that in NT, you
can create ERD by typing RDISK command. This command is not
available in Windows 2000.
43. WINS and
LMHOSTS file resolve NetBIOS names to IP addresses, whereas DNS and
HOSTS file resolve FQDN to IP addresses.
44. Placing the
paging file on different physical disks is optimal. This will
improve faster access to the Paging file, and also distribute the
load.
45. Some of the
important System Monitor counters are:
-
Memory>Available Mbytes: measures the amount of physical memory
that is available. Typically > 4MB. If less than 4 MB, consider
adding more memory.
-
Memory>Pages/Sec: Shows the number of times that the disk has
been accessed, because requested information was not available
in memory. If the value of the counter is not below 20, you
should add more memory. A value of 4 or 5 is typical.
-
Paging
File>%Usage: Indicates the % of allocated page file utilization.
Should be less than 99%.
-
Processor>%Processor Time: measure the time that the processor
is busy. Should be typically less than 80%
-
Processor>Interrupts/Sec: Indicates the average number of
hardware interrupts that the processor receives each second. If
more than 3,500, you can suspect a program or faulty hardware.
-
PhysicalDisk>%Disk Time: Measures the amount of time that the
physical disk is busy servicing read or write requests. If more
than 90%, you can improve the performance by adding another disk
channel.
-
PhysicalDisk>%Current Disk Queue Length: indicates the number of
pending disk requests that need to be processed. The value
should be less than 2. The disk problems might arise from less
memory, resulting in usage of excessive paging. Ensure that the
memory is sufficient before attending to the disk problem.
-
LogicalDisk
> %Free Space counter: Indicates the amount of logical disk’s
free disk space. Typical value is 10% or above.
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