- What are the basic expansion card types?ISA and PCI, ISA can be used only on XT, AT and ATX boards. The industry now considers ISA obsolete.
- How do you clear CMOS password? Since CMOS is a special chip with its own battery, the best way to clear out a CMOS chip is to disconnect it from its power supply.
- Where does the Real mode on the CPU come from? The original 8086, which only had 1 MB of memory. This megabyte is split into low memory for IRQ tables, application memory and high memory.
- Where does CPU Enhanced mode originate from? Intel’s 80386 was the first 32-bit processor, and since the company had to backward-support the 8086. All the modern Intel-based processors run in the Enhanced mode, capable of switching between Real mode (just like the real 8086) and Protected mode, which is the current mode of operation.
- Name the processor lines of two major manufacturers? High-end: Intel - Pentium (II, III, 4), AMD - Athlon. Low-end: Intel - Celeron, AMD - Duron. 64-bit: Intel - Itanium 2, AMD - Opteron.
- What’s the difference between L1 and L2 cache? Level 1 cache is internal to the chip, L2 is external.
- What’s the speed and device maximum specs for Firewire? IEEE 1394 (Firewire) supports the maximum of 63 connected devices with speeds up to 400 Mbps.
- Where’s MBR located on the disk? Main Boot Record is located in sector 0, track 0, head 0, cylinder 0 of the primary active partition.
- What’s the maximum hard drive size for FAT16-based Windows system? 2 GB.
- How many logical drives is it possible to fit onto a physical disk? Maximum of 24 logical drives. The extended partition can only have 23 logical drives.
- WHat are * and ? when using them for wildcards in Windows? * - any characters, arbitrary amoung, ? - single character.
- How does the browser know to go to a certain IP address when you enter a domain like google.com? It searches through local DNS cache, if nothing is there, it queries the ISP’s DNS server.
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3 Comments on A+ and basic PC questions
How do you clear CMOS password?
We can clear MB* CMOS Password through debug command. but Carefull before dong this coz take no responcibility for that..
Steps:
Open Command Prompt
Type Debug n press ENTER
type
- 70 20
- 71 2e
- q
Datz all Folks Restart windows n VOILA u hav done it.But remeber not all MB* support dat Deassembling. DO it on your own risk ;-)
How to clear CMOS password ?
go to MS dos prompt only, or by pressing F8 at the tyme of booting and
select command prompt only
Type Debug on C prompt
you will get “-” sign type the command after that
o 71 2e enter
o 70 20 enter
q enter
restart the PC now.
Do it on your own risk.
Regards.
shashank saxena
# 91 9868049491
Question 8 -
Where’s MBR located on the disk? Main Boot Record is located in sector 0, track 0, head 0, cylinder 0 of the primary active partition.
MBR = Master Boot Record in my part of the world.
Thanks for the useful questions.