Quiz 12 Answers/Explanations1. You have been called to a customer's home and are tasked with installing a new video card. Due to the design of the case it is required to unplug all connectors on the back of the case.
After installing the video card you vacuum the board, and tie wrap a few wire bundles, just a friendly maintenance gesture. Now when you go to boot the PC the screen stops at the Win98 splash screen. Which of the following would be the most probable cause?
The new video card is bad.
The mouse and keyboard connectors are plugged into the incorrect ports. While tie wrapping internal wires and cleaning, the boot record on the hard drive was damaged. There is a driver conflict with the new card and the old video driver.
Answer/Explanation
The mouse and keyboard connectors are plugged into the incorrect ports.
Try it. With your computer turned off switch the mouse and the K/B connectors. The PC will lock up at the splash screen If the video card was bad then you would not see the splash screen and would likely get an error at boot. If the boot record was damaged (highly unlikely) then you would get an immediate error following POST. A video driver conflict would still allow you to boot. At this time you could update the driver in device manager.
2. Which of the following would be the reason that floppy drive cables have a twist between the two drive connectors? Choose the best answer.
The twist determines which is the 3 1/2 and which is the 5 1/4 floppy drive for the operating system.
This determines which drive is a 'A' and which is drive 'B' for the BIOS. This renders it virtually impossible to connect the wrong floppy drive to a cable connector. This no longer holds true since all newer floppies are 3 1/2 inch.
Answer/Explanation
The 7 wire twist in the floppy cable identifies which drive is a 'A' and which is drive 'B'.
The twist tells the BIOS that the device at the end will be the 'A' drive and the device between the twist and the motherboard connector will be the 'B" drive. The twist is actually a rerouting of wiring to make this determination. The connector determines which floppy is a 3 1/2 and which is a 5 1/4, and has nothing to do with the operating system. The operating system gets its information from the BIOS. Connecting the wrong drive to a connector is virtually impossible but I have seen students try. If a connector does not slide on without force, do not force it!
3. Which of the following methods of formatting determine the amount of cylinders and sectors?
Low level formatting Medium level formatting High level formatting Intermediate level formatting
Answer/Explanation
Low level formatting
Low level formatting is done by the manufacturer. There was a time when we would do ourselves as techs, but those days are now gone. If you perform a low-level format on a drive you may kiss it good bye under most circumstances.
You can find software on the internet that will perform a low level format. Make sure it is a drive that is not any good though, because there are no guarantees. The medium level format is when we as the end user format a drive and prepare it to accept the operating system. A high level format is actually installing the operating system on a hard drive. There is no such thing as an intermediate level format.
4. One of your accounts is using NT4 with a PDC and 8 NT4 workstations with Service pack 4 installed, with the possibility of an upgrade to Windows 2000 in the near future. One of the staff members often does some of the light administration work on the server. You get a call stating that a USB 2.0 scanner was purchased and appears to be inoperative with their network. Which of the following would be the most likely cause of the scanner failure, when considering that the scanner worked when taken out of the box?
Since they purchased USB 2.0 a BIOS upgrade would be in order for the operating system to see the new hardware. USB 2.0 is not compatible with NT4 unless Service pack 6 is installed. The NT4 operating system is not USB compatible. Shut down the operating system, reboot and enable USB in the BIOS, after saving the changes reboot the computer and USB will be picked up as new hardware.
Answer/Explanation
The NT4 operating system is not USB compatible.
NT 3.51 and NT4 are legacy (old) which means they are not plug and play and as well the earlier NT operating systems did not support USB. Keep in mind that NT4 came out well before USB was available (approx. 1992).
5. Your Aunt Betsy calls and says she is sick and tired of the problems with her cable connection. She calls you, and remarks how she overheard you at the house last weekend talking about this DSL setup you have for an Internet connection. She has gone on line and is a little confused. She asks you which of the following she could use, that would allow her to continue to use her voice line at the same time that she is on the Internet. Which of the following would this be? Choose all that apply.
Very high bit rate DSL (VHDSL)
Symmetric DSL (SDSL)
Asymmetric DSL (ADSL)
High bit rate DSL (HDSL)
IDSL
Answer/Explanation
Asymmetric DSL (ADSL), Very high bit rate DSL (VHDSL)
The three types of readily DSL (Digital subscriber lines) that would your Aunt Betsy to share the data and the voice line are, ADSL, RADSL, and VHDSL.
They are required to have a splitter installed by a certified tech though.
The splitter is used to carry the voice over the lowest frequencies and the data at the higher frequencies.
Symmetric DSL (SDSL) does not allow you to use the same telephone line for both voice and data.
High bit rate DSL (HDSL) offers fairly equal upload and download speeds but cannot be shared with a voice line.
IDSL is the slowest of the DSL family and cannot share voice with data.
6. Which of the following cables would be used to connect a:
1) host to either a switch or a hub, or
2) a router to a switch or a hub?
A straight-through cable is used to connect:
1) A host to either a switch or a hub.
2) A router to either a switch or a hub.
A rolled cable is used to connect a host to a router console communication port.
A Crossover cable may be used to connect:
1) A switch to a switch
2) A hub to a hub
3) A host to a host.
Don't forget that some hubs have the MDI-X option. This means that the crossover cable is not required, if both devices have the switch set to this position.
7. You have just completed assembling a PC and have turned it on to check the BIOS settings. Instead of a normal single POST beep, the PC continuously beeps. Which of the following would be the most probable cause?
A memory chip has failed
Video card is not seated properly
A Memory chip is not seated properly
The motherboard battery has failed
Answer/Explanation
A Memory chip is not seated properly
If a memory module is not seated properly then you will typically receive a continuous beeping sound from the PC.
Most manufacturers are pretty standard on this one.
If a memory chip has completely failed then you will get a failure at bootup.
If the video card is not seated properly then you will get a long beep, immediately followed by three short beeps.
If the memory battery has failed, the machine will still boot OK. You may be queried to reenter the correct time and date depending on the operating system you are using.
8. If HTTP uses port 80 and does not provide a secure connection for E-commerce then we would implement HTTPS, which uses SSL (secure socket layer). HTTPS provides a secure and encrypted connection for E-commerce. Which of the following port numbers is used?
143 21 443 53
Answer/Explanation
Port 443 is used with SSL
FTP uses port 21 DNS uses port 53 IMAP uses port 143
9. You have successfully completed the physical installation of an EIDE hard drive in a customers computer, and it is recognized in BIOS. He customer states on the work order that they want to have the drive partitioned with DOS installed on the first partition, at a size of 300MB. The remaining space will be used as an extended partition.
You insert a bootable floppy with the fdisk program into the drive bay, POST is successful but you get a non system boot disk error. Which of the following would be the most probable cause.
The newly installed hard drive is defective. The floppy with the fdisk program has the wrong version of command.com. The boot sequence in the CMOS settings is setup to boot to the CD-Rom, hard drive and then the floppy. The BIOS will not recognize EIDE hard drives.
Answer/Explanation
BIOS needs to be reset to identify the boot sequence in the CMOS settings. (The question states bootable)
If the CMOS settings did have the boot sequence to A first then the system files have been wasted (Unlikely)
As for EIDE devices BIOS will recognize the device but may not recognize all of the drive space (over 528 MB)
Having a different version of command.com and fdisk can cause a problem, but this is beyond the A+ test.
10. You have a hard drive that is formatted with FAT 16 with Windows 95, and are about to install a newer hard drive at 4GB. You have the intention of installing the Windows 98 upgrade for the customer so that they may take full advantage of the USB capabilities and utilize FAT 32.
Which of the following would be true when transitioning from FAT 16 to FAT 32?
FAT 32 is incapable of working with hard drives that are smaller than 2GB, so this upgrade will require that the boot disk be FAT 16 and the secondary disk be FAT 32.
FAT 16 utilizes a cluster size of 64 sectors, where as FAT 32 utilizes a cluster size of 32 sectors when working with drives that are 2GB.
FAT 32 utilizes a cluster size of 32 sectors when working with hard drives that are greater in size than 2 GB, and FAT 16 uses a cluster size of 32 sectors.
FAT 16 utilizes a cluster size of 32 sectors, where as FAT 32 utilizes a cluster size of 64 sectors when working with drives that are smaller than 2GB.
Answer/Explanation
Also XP will not recognize a hard drive above 32 GB with FAT32. The drive must be formatted with NTFS.
NT4 can recognize a partition with FAT16.
NT4 cannot recognize a FAT32 partition.
NT4 cannot recognize a NTFS5 (W2K) partition unless Service pack 5 is installed on the NT4 machine.
NT5 (W2K) can recognize any FAT partition and an NT4 NTFS partition.
