8. Your Windows 2000 Server has two 16-bit Windows applications named MCSEWIN16-A.EXE and MCSEWIN16-B.EXE running concurrently. These applications are started by executing a script with the following command line:

Start MCSEWIN16-A.EXE /separate
Start MCSEWIN16-B.EXE /separate

You want to monitor both applications at performance monitor MMC, what instance or instances should you monitor?

A. NTVDM
B. NTVDM and NTVDM#1 as the instances.
C. NTVDM#1 and NTVDM#2 as the instances.
D. MCSEWIN16-A.EXE and MCSEWIN16-B.EXE

By default Win16-based application will run in the same memory space, as such, only one instance named NTVDM is used to monitor 16-bit applications. However, you can configure them to run in separate memory space to increase the stability of your system. If one of the Win16-based applications running in the same memory space stop responding, the rest of the win16-based applications will also stop responding because they shared some of the memory resources. When you use the /separate switch to start a 16-bit application, the 16-bit application will run in its own memory space just like how DOS program run in Windows 2000, when this happen, the naming of the process instances are similar to MSDOS where the first application will be named NTVDM#1 and the second with NTVDM#2 and so on. When you have several 16-bit applications and DOS applications running, you may have the difficulty to identify which NTVDM is for which program.

Note: NTVDM = NT Virtual Dos Machine

Answer: C

References:
http://www.microsoft.com/windows2000/en/server/help/SAG_MPmonperf_25.htm
http://www.microsoft.com/technet/treeview/default.asp?url=/TechNet/prodtechnol/windows2000serv/reskit/serverop/part2/sopch05.asp

 

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23. Your boot.ini file has been configured wrongly by a utility and When you start your Windows 2000 Server, you see the following error message: "Windows 2000 could not start because the following file is missing or corrupt: \system32\ntoskrnl.exe. Please re-install a copy of the above file." What should you do to solve the problem?

A. Use the emergency disk to repair the system files.
B. Use the emergency disk to repair the Boot sector.
C. Start the computer by using RECOVERY DISK. Correct the boot.ini file at your system boot up partition, so that it is configure to load the operating system from a correct location.
D. Use Recovery Console to correct the boot.ini.
E. Use safe mode to correct the boot.ini

From Microsoft web site:

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In NT, using a recovery disk is the closest you'll come to booting to a floppy disk. With a DOS boot disk, the complete bootable operating system can be stored on a single floppy disk. With NT, only a part of the boot process can be performed from disk (that's the part played by the system partition on the hard drive in an NT machine). This partition holds enough information to allow NT to begin the initial stage of bootup, whereupon control transfers to the boot partition (where NTOSKRNL.EXE resides). Fortunately, a recovery disk does contain the NTLDR, NTDETECT.COM, and BOOT.INI files and, therefore, can be used to boot NT as long as the boot partition remains intact on your hard drive. (See Step by Step 9.3 for instructions on how to create a recovery disk.)

===============================================================================

When your boot.ini file is missing or containing faulty information, you cannot access to safe mode or last known good configuration at all, hence, it is not possible to repair the boot.ini. Emergency repair disk can be used to restore back your registry, system files, partition boot sector, and startup environment. For boot.ini it is under the startup environment section, since system files and boot sector is not where boot.ini can be repaired, A and C are not the answer. As describe by Microsoft web site, Recovery disk can be used to boot NT, which is the same in Windows 2000 environment, you can use this disk to boot up the system and then correct the boot.ini.

Answer: C

References:
http://www.microsoft.com/TechNet/winnt/troubles.asp#d
http://www.microsoft.com/windows2000/en/professional/help/recovery_erd.htm

 

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26. You install a Windows 2000 Server with a SCSI adapter that is not in the HCL. After the installation, you notice that the disk access is slower than normal system. To remedy this problem, you download a driver from the manufacture site and then install the driver. When you start your computer again, you receive a STOP error say "INACCESSIBLE_BOOT_DEVICE" Which of the following can you do to solve the problem? (Choose all that apply)

A. Use recovery console to copy the old driver for the SCSI adapter to the boot up partition and rename it to Ntbootdd.sys.
B. Use recovery console to copy the old driver for the SCSI adapter to the boot up partition and rename it to Ntbootscsi.sys.
C. Use safe mode to reinstall the old driver for the SCSI adapter.
D. Start the computer by using a Windows 2000 recovery disk then reinstall the old driver for the SCSI adapter.

Ntbootdd.sys is a driver file for SCSI adapter which has to be copied to the booting partition. Since the file is replaced by the latest driver and the latest driver causing a stop error, you need to restore it back. Using recovery console, you can copy the file from a floppy disk to the root of booting partition. A recovery disk that use to boot up a Windows 2000 may contain the ntbootdd.sys file if the system has a SCSI adapter, since this file is not been modified, you can boot up your computer using this disk and then restore back your old driver.

Answer: A,D

 

30. Your company named own a web site which is accessible via http://www.itexams.co.uk . This Web server is hosted by a IIS 5.0 installed at a Windows 2000 Server named MCSESVR and run a server based application called MCSEDATA 24 hours a day to accept some database query and then generate the report to user. Recently, user report that when they query the web server, the response time is not as good as it was. You want to identify whether an additional Processor would help to improve the performance, what process counter at the Task manager should you use to monitor MCSEDATA?

A. Memory usage
B. Thread count
C. Page Faults
D. I/O Reads
E. I/O Write

From Microsoft Documentation:

===============================================================================
Processor bottlenecks are also indicated when the System:Processor Queue Length counter has a sustained value of two or more threads. Balancing threads against overall performance as measured by connections and requests is a tricky business. Any tuning of threads should always be followed by overall performance monitoring to see if performance increases or decreases. To determine if you should adjust the thread count, compare the number of threads and the processor time for each thread in the process to the total processor time. If the threads are constantly busy, but are not fully using the processor time, performance may benefit by creating more threads. However, if all the threads are busy and the processors are close to their maximum capacity, you are better off distributing the load across more servers rather than increasing the threads. If you do increase the size of the thread pool, you should also monitor Thread:Context Switches/sec:Inetinfo=>Thread#, Thread:Context Switches/sec:Mtx=>Thread#, and System:Context Switches/sec. Increasing the number of threads may increase the number of context switches to the point where performance decreases instead of increases

===============================================================================
This is a real hard question. Traditionally, a running program will only create a process, When we switch from one process to the other in CPU, the content of a process to be replaced has to be saved to a temporarily and the new process will be copied to the CPU for processing, this mechanism is called context switching. Context switching is not good for performance as when that happen, your CPU is only doing some swapping which is unproductive. To solve this problem, a smaller version of process is used, this smaller version of process shared some information with each others, hence, when you switch from one thread to the other, the memory need to be copied and saved is less as some information is still the same. Nevertheless, context switching still happens there just that the impact of performance sluggish is lesser than a Process. If a process has many threads running, that means there will be many context switching happens and some threads may be queue for too long before CPU can process it. To solve this problem, you can add a CPU to distribute the threads more quickly to different CPUS and cut down the wait time before a thread get service by a CPU. For this case, you want to know whether adding a CPU will help, since the numbers of thread count will help you to determine whether a process can be improved by adding more CPUs, you should monitor this counter.

Answer: B

References:
http://www.microsoft.com/TechNet/iis/Tips/hwcntrs.asp

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