R5411504 Computer Systems Maintenance

1

Code No: R5411504

IV B.Tech I Semester(R05) Regular/Supplementary Examinations, December 2009 COMPUTER SYSTEMS MAINTENANCE (Computer Science & Systems Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) In order to keep a CPU cool which is better to use and why a heat sink or a Cooling fan (b) Write short notes on: i. AGP and ii. POST.

[8+8]

2. (a) Briefly explain the Flash BIOS? (b) Describe the AMI Flash programming Beep Messages?

[8+8]

3. (a) Explain the following symptoms and give the solutions: i. “T he system boots with no problems but crashes or f reezes when certain applications are run” ii. “A system M alf unction under HIM EM.SY S or DOS4GW.EXE af ter installing a new CP U ”. (b) Describe the Pentium III Characteristics.

[12+4]

4. (a) Explain in-detail RAID controller operating modes? (b) Explain CHILDPROOF of the system for protecting Data and Drives?

[10+6]

5. (a) Compare DVD and CD media specifications? (b) List of the rules for caring a DVD disc?

[10+6]

6. Explain in detail about (a) platters (b) read/write heads (c) head actuators (d) spindle motor.

[4×4 = 16]

7. Explain briefly about ISDN, WinModems and DSL modems in detail.

[16]

8. Explain briefly the terms (a) Black outs (b) Brown outs.

[8+8] ?????

2

Code No: R5411504

IV B.Tech I Semester(R05) Regular/Supplementary Examinations, December 2009 COMPUTER SYSTEMS MAINTENANCE (Computer Science & Systems Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) How an operating system manages an Application. Explain briefly. (b) Describe the advantages and Disadvantages of UNIX.

[10+6]

2. (a) Describe the different BIOS BUGs? (b) Briefly explain BIOS SHADOWING?

[8+8]

3. (a) Explain the following symptoms and give the solutions: i. “T he system boots with no problems but crashes or f reezes when certain applications are run” ii. “A system M alf unction under HIM EM.SY S or DOS4GW.EXE af ter installing a new CP U ”. (b) Describe the Pentium III Characteristics.

[12+4]

4. (a) Explain in-detail RAID controller operating modes? (b) Explain CHILDPROOF of the system for protecting Data and Drives? 5. Explain in detail all parameters in performance tab under Windows 98/ Windows ME.

[10+6] [8+8]

6. Explain in detail about (a) platters (b) read/write heads (c) head actuators (d) spindle motor.

[4×4 = 16]

7. (a) How is memory refreshed? (b) What is CAS latency, bursting and pipelining? 8. Troubleshoot problem “Computer halts when try to shut down Windows 98”. ?????

[6+10] [16]

3

Code No: R5411504

IV B.Tech I Semester(R05) Regular/Supplementary Examinations, December 2009 COMPUTER SYSTEMS MAINTENANCE (Computer Science & Systems Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Explain in detail about Boot Process? (b) Explain common Operating System Problems or bugs? (c) How to create a Boot Diskette for Dos?

[8+4+4]

2. Explain the following symptoms and give the solutions: (a) “T he CD−ROM ref uses to run automatically under windows9X/M E when a disc is inserted”. (b) “W IN DOW S XP read a data disk but cannot play audio CD”.

[16]

3. (a) Explain CPU Over Clocking Mother board issues? (b) Explain the Cooling issues of the Microprocessor?

[8+8]

4. (a) Explain in-detail RAID controller operating modes? (b) Explain CHILDPROOF of the system for protecting Data and Drives?

[10+6]

5. (a) Give initial setup to configure the DVD system to default state. (b) Explain briefly decoder for playing movies (DVD- video)

[8+8]

6. (a) What are enhancements manufacturers implemented to the cache management circuitry? (b) Discuss about write caching in detail.

[8+8]

7. (a) How to troubleshoot the problem that the PC freezes when “volume” hotkey is pressed? (b) The Numlock feature may not activate when the Num lock key is pressed .How to troubleshoot this problem. [8+8] 8. Troubleshoot the following problem associated with power and power supply failures. “The PC or peripheral is completely dead and no power indicators are lit”. [16] ?????

4

Code No: R5411504

IV B.Tech I Semester(R05) Regular/Supplementary Examinations, December 2009 COMPUTER SYSTEMS MAINTENANCE (Computer Science & Systems Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Explain different Layers of the PC Hierarchy. (b) Explain the important features of the PC-DOS 7.0.

[8+8]

2. (a) Briefly explain the CLV Format? (b) Briefly explain the “Buf f er underruns” avoiding problems?

[4+12]

3. (a) Explain CPU Over Clocking Mother board issues? (b) Explain the Cooling issues of the Microprocessor?

[8+8]

4. (a) Explain windows 9X/ME/XP Recyclebin for recover files and folders? (b) Explain in-detail SCANDISK?

[8+8]

5. Explain the following settings: (a) Microsoft network client setting (b) Microsoft network server/ Netware settings.

[8+8]

6. (a) Explain about the fascinating aspect of magnetic media in a floppy disk. (b) Explain in detail about the magnetic recording principles of floppy drive. 7. Explain in detail any 8 contemporary memory symptoms. 8. Explain clearly about a complete chip-based switching power supply. ?????

[8+8] [16] [16]