Download CUSTOMER_CODE SMUDE DIVISION_CODE SMUDE

CUSTOMER_CODE
SMUDE
DIVISION_CODE
SMUDE
EVENT_CODE
APR2016
ASSESSMENT_CODE BCA3030_APR2016
QUESTION_TYPE
DESCRIPTIVE_QUESTION
QUESTION_ID
18005
QUESTION_TEXT
Mention the guide lines for troubleshooting the problem in hard
drive. What are decoder board connections?
SCHEME OF
EVALUATION
Guidelines for trouble shooting problem in hard drive are: (5 marks)
1. Be careful for power and static discharge
2. Verify compatibility
3. Check all cards
4.Check all connectors and cables
5. Verify drive jumper settings
6. Check your power supply capacity
7. Verify drive settings in CMOS set up
8. Check for viruses
Five major connections on MPEG 2 decoder card are:
(5 marks)
1. Analog input jack
2. Analog output jack
3. Digital output jack
4. Monitor connector
5. Video input connector
QUESTION_TYPE
DESCRIPTIVE_QUESTION
QUESTION_ID
18007
QUESTION_TEXT
Mention the USB features. Mention responsibility of USB software
layer
SCHEME OF
EVALUATION
Features of USB: (7 marks)
1. When USB device connects to a computer, the computer acts as the
host device.
2. You can connect upto 127 devices to host using USB.
3. USB 2 has the maximum data rate of 480 megabits per second.
4. You can connect two wires of USB cable to power supply. One
wire to voltage supply and other for grouping.
5. For low power devices like keyboard, mouse they can be directly
connected to computer and draw their supply from Bus
6. You can plug the USB device into the Bus and unplug them at any
time.
7. When computer goes to power saving mode the USB devices can
automatically put to sleep mode by host computer.
USB Software layer responsibilities: (3 marks)
1. Handles USB device and their connectivity
2. USB devices enumeration and configuration
3. Appropriate device will be loaded
4. Power management on bus and bus bandwidth
5. Manages data transfer between software and hardware
QUESTION_TYPE
DESCRIPTIVE_QUESTION
QUESTION_ID
18010
QUESTION_TEXT
Briefly explain the issues associated with video speed.
1.Graphics memory bandwidth
2.Communication between host and graphics accelerator
SCHEME OF EVALUATION 3.Features and host feature emulation
4.Monitor refresh
(2.5 marks for each)
QUESTION_TYPE DESCRIPTIVE_QUESTION
QUESTION_ID
74021
QUESTION_TEXT Write the steps involved in troubleshooting procedure in SCSI system.
SCHEME OF
EVALUATION
Troubleshooting
In many cases, the troubles are caused during installation, setup, and operation
of the devices that is on the bus- When you are installing a device, install one
by one then you will have less problems. You must first check the host adapter
SCSI BIOS initialization message. If you don’t find the initialization message
when you switch on the computer then it is sure that there is some problem with
system SCSI host adapter. This means that either the adapter is installed
properly or device itself is detective. If this test is passed in the SCSI checking
them probably the problem is in the driver installation. You must ensure that any
old CMOS settings are mapped wrongly to the new device. Then you need to
unselect the settings. Below are the general tips or checklist for troubleshooting
the SCSI device in the following.

You must ensure the power supply of the computer is sufficient enough
to handle all the SCSI devices in the computer

The quality of the cable must be good and securely attached to each
device

The orientation of each connector on the SCSI cable must be verified
properly.

SCSI ID of the device must be properly selected you must make sure
that duplicate IDs are not allowed unless LUNs designations are used.

You must ensure that the two ends of the cable must have proper I
terminations and should have active terminators.

You must verify for the proper configuration of SCSI controller. There
must be no conflicts in the SCSI controller in case of IRQs, BIOS
addresses, or I/O. you must check the SCSI host adapter BIOS.
The SCSI BIOS can be disabled it you are not using SCSI hard drives
in booting. This decreases the problem related to performance or
compatibility issues can be solved

You must check for CMOS setup for drive configuration. It the SS
drives are in the system and IDE drives are not in the system then ma
the drive entries under CMOS as “none”

You need to check for the PCI slot containing the SCSI host adapter c
active or not and ensure that it is using the unique IRQ.

You need to check the DOS drivers for host adapter and non HDD
devices are installed properly in CONFIG.SYS and
AUTOEXEC.BAT. CONFIG.SYS is the primary configuration file for the
DOS and os/2 operating systems. It is a special file that contains setup
or contiguratt1 instructions for the computer system. AUTOEXEC.BAT
is a root directory batch file that is responsible for executing commands
at system start up.

You need to check for the protected mode drivers if you are work?’
under windows. You must see that any necessary protected drivers the
host adapter and SCSI devices are installed properly
QUESTION_TYPE
DESCRIPTIVE_QUESTION
QUESTION_ID
119570
QUESTION_TEXT
Give the advantages and disadvantages of switching power circuits.
Advantages of switching power circuit
When the switching transistor is on, the current is drawn in the
primary circuit. Therefore, power wastage is very less in the primary
circuit.
The secondary circuit provides just enough power to keep the load
voltage regulated. Therefore, power wastage is very less in the
secondary rectifier, filter and switching circuit.
This concept can reach a higher efficiency than linear supplies.
Components are small in size and packed tightly.
SCHEME OF
EVALUATION
Disadvantages
It acts as radio transmitters and causes problems in radio and
television reception.
The shield on the switching circuit needs to be replaced very often,
whenever power supply is repaired.
Strong electromagnetic spectrum can easily disturb the working of the
logic circuit.
There is not enough noise in the circuit to interfere with the load as
all the noise has been removed by the filter which is designed with
care. The output voltage will always have some amount of high
frequency ripple.
Troubleshooting is very difficult as it contains many components
QUESTION_TYPE
DESCRIPTIVE_QUESTION
QUESTION_ID
167290
QUESTION_TEXT
Discuss briefly configuring the standard CMOS setup.
Computer hardware specification gathering:you need to gather necessary information
needed to configure the CMOS.
-You need to select the second screen to set the parameters for the booting and disk
drives.
-In order to set the video characteristics you need to set the shadow memory and
disable the video on-board memory.
-When you create a setting on the computer you need to enter legacy products that
don’t detect the PnP details.
-You can re-enter the CMOS settings program and check for any errors if your
system don’t boot and rectify them.
Entries found commonly in the CMOS standard setup menu list
-Date and Time:you can change the date and time of the system clock using these
settings.
-Error halt: if an error is detected in the initial stage of the PC start, to ensure whether
the PC will stop, this entry is used. There are some more similar entries which help in
handling the halt.
SCHEME OF
EVALUATION
-Floppy drive A:this setting is used to know the type of the floppy of the floppy drive
installed for drive A.
-Halt on: whenever you need to skip the errors during the POST, you can use this
entry.
-Hard disk C: you can auto-detect the hard drive attributes by setting the SCSI drive
setting the position as none.
-Like floppy disk drive hard disk drive also has two drives C and D.
-Daylight savings: this entry helps in allowing the RTC to activate the daylight
saving scheme.
-HDD Delay: When the BOOT is very fast then there may not be enough time to
initiate itself properly therefore this setting helps in prompting delay in the boot up
and identify the hard disk drive.
-Keyboard: this setting helps to identify whether a keyboard is attached to the system.
-Memory: this setting is used to choose the kind of memory elements to be displayed
in the start time. Based on the following types the content is distinguished by the
BIOS POST:
Base memory
Extended memory
Other memory
Total memory
-Primary display: this setting is used to identify the type of display used in the
system.
-Quick Power-on-Self-Test: you can speed up your booting time by selecting Quick
POST.
(10 marks)