MCQOPTIONS
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MCQOPTIONS
This section includes 290 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
What command is used to reset a MODEM when using the "AT Command Set"? |
| A. | ATR |
| B. | ATZ |
| C. | DTR |
| D. | DCE |
| Answer» C. DTR | |
| 252. |
Resistance is measured in units of: |
| A. | ohms |
| B. | farads |
| C. | helids |
| D. | amperes |
| Answer» B. farads | |
| 253. |
Which standard govern parallel communications? |
| A. | RS232 |
| B. | RS-232a |
| C. | CAT 5 |
| D. | IEEE 1284 |
| Answer» E. | |
| 254. |
The acronym HDI stands for: |
| A. | Half duplex interface |
| B. | Hard disk interface |
| C. | Head to disk interference |
| D. | Help desk interference |
| Answer» E. | |
| 255. |
A PC with a 486DX2 processor runs internally at 50Mhz. What speed would its external logic be running? |
| A. | l0Mhz |
| B. | 25Mhz |
| C. | 50Mhz |
| D. | 100 Mhz |
| Answer» C. 50Mhz | |
| 256. |
Match the device driver HIMEM.SYS to its operation. |
| A. | Supports (ANSI) terminal emulation |
| B. | Manages the use of extended memory |
| C. | Uses expanded memory on a 80386 processor |
| D. | Supports code page switching |
| Answer» C. Uses expanded memory on a 80386 processor | |
| 257. |
When is the risk for electrostatic discharge the greatest? |
| A. | Day time |
| B. | High humidity |
| C. | Low humidity |
| D. | Night time |
| Answer» D. Night time | |
| 258. |
When your hard drive crashes from any of the correct selections in the question above, or from dropping it, it is known as head-to-disk interference, or HDL |
| A. | 1 |
| B. | |
| Answer» B. | |
| 259. |
What is modified when changing the system start-up boot sequence? |
| A. | BIOS/CMOS |
| B. | CONFIG.SYS |
| C. | autoexec.bat |
| D. | COMMAND.COM |
| Answer» B. CONFIG.SYS | |
| 260. |
Resistance is measured in ? |
| A. | Volts |
| B. | Amps |
| C. | Watts |
| D. | Ohms |
| Answer» E. | |
| 261. |
Which is the easiest component to environmentally recycle? |
| A. | Motherboards |
| B. | CMOS batteries |
| C. | Toner cartridges |
| D. | Cathode ray tubes |
| Answer» D. Cathode ray tubes | |
| 262. |
The mouse pointer moves erratically, what is the possible cause? The mouse |
| A. | ball is dirty |
| B. | is not connected |
| C. | driver is not installed properly |
| D. | has an incorrect IRQ setting |
| Answer» B. is not connected | |
| 263. |
Your customer tells you the print quality of their dot matrix printer is light then dark. Which of the following could cause the problem. |
| A. | Paper slippage |
| B. | Improper ribbon advancement |
| C. | Paper thickness |
| D. | Head position |
| Answer» C. Paper thickness | |
| 264. |
You see the message "invalid media device" after installing a new hard drive. What do you do next? |
| A. | Format |
| B. | Fdisk |
| C. | Partition |
| D. | Add the OS |
| Answer» B. Fdisk | |
| 265. |
When measuring AC (Alternating Current) with a multimeter, it is important to maintain the proper polarity. |
| A. | 1 |
| B. | |
| C. | Himem.sys |
| D. | EMM386.exe |
| Answer» C. Himem.sys | |
| 266. |
During the laser printer's conditioning phase a uniform charge of _____ is placed on the photosensitive drum. |
| A. | +1000 volt |
| B. | +600 volts |
| C. | -600 volts |
| D. | -1000 volts |
| Answer» D. -1000 volts | |
| 267. |
How many pins on a VGA? |
| A. | 15 |
| B. | 9 |
| C. | 25 |
| D. | 32 |
| Answer» B. 9 | |
| 268. |
ESD damage can be caused by: |
| A. | Placing an IC in a non-conductive plastic bag |
| B. | Placing an IC on a grounded mat |
| C. | Repeated sags in current supplied from outlets |
| D. | Touching metal on the chassis |
| Answer» B. Placing an IC on a grounded mat | |
| 269. |
What is the first thing you could do to check for damage to a printer after receiving it? |
| A. | Run MSD diagnostics |
| B. | Attach it to a PC and print something |
| C. | Check the cables |
| D. | Unbox it and examine it for physical damage |
| Answer» E. | |
| 270. |
Which step should you perform first before discharging a CRT? |
| A. | Remove the CRT from its housing |
| B. | Disconnect the CRT from the computer |
| C. | Remove the video assembly |
| D. | Turn power off before removing power source |
| Answer» E. | |
| 271. |
The 34-pin connection on an I/O card is for? |
| A. | Floppy drive |
| B. | SCSI drive |
| C. | IDE drive |
| D. | Zip drive |
| Answer» B. SCSI drive | |
| 272. |
On the PC side, the printer port is a: |
| A. | 25 pin female serial connector |
| B. | 15 pin female parallel connector |
| C. | 25 pin male serial connector |
| D. | 15 pin female serial connector |
| Answer» E. | |
| 273. |
Which common bus specification provides the fastest data transfer rate? |
| A. | VL bus |
| B. | ISA |
| C. | PCI |
| D. | All of the above |
| Answer» D. All of the above | |
| 274. |
When installing PCI NICS you can check the IRQ availability by looking at |
| A. | dip switches |
| B. | CONFIG.SYS |
| C. | jumper settings |
| D. | motherboard BIOS |
| Answer» E. | |
| 275. |
Most PCs give a single beep on bootup to indicate they are ok hardware wise. You boot your PC and don't get a beep. What should you check first? |
| A. | system board |
| B. | RAM |
| C. | microprocessor |
| D. | power supply |
| Answer» E. | |
| 276. |
What is the jumper setting on a SCSI device to configure it to use the fourth SCSI id? Remember, SCSI ids start with zero. |
| A. | 10 |
| B. | 110 |
| C. | 11 |
| D. | 101 |
| Answer» D. 101 | |
| 277. |
What is the highest binary number that can be referred to on a three position jumper block? |
| A. | 4 |
| B. | 6 |
| C. | F |
| D. | 1 |
| Answer» E. | |
| 278. |
What is the best ground for a conductive work bench? |
| A. | AC outlet |
| B. | Ground to bend |
| C. | To another device |
| D. | Chassis ground |
| Answer» B. Ground to bend | |
| 279. |
What product is used to clean smudged keys on a keyboard? |
| A. | TMC solvent |
| B. | Silicone spray |
| C. | Denatured alcohol |
| D. | All-purpose cleaner |
| Answer» E. | |
| 280. |
What's the best way to protect your hard drive data? |
| A. | regular backups |
| B. | periodically defrag it |
| C. | run chkdsk at least once a week |
| D. | run scandisk at least once a week |
| Answer» B. periodically defrag it | |
| 281. |
Pick the correct choice for the 80386SXCPU. |
| A. | 16 bit word size, 16 bit data path |
| B. | 32 bit word size, 16 bit data path |
| C. | 8 bit word size, 32 bit data path |
| D. | 32 bit word size, 8 bit data path |
| Answer» C. 8 bit word size, 32 bit data path | |
| 282. |
What could cause a fixed disk error. |
| A. | No-CD installed |
| B. | bad ram |
| C. | slow processor |
| D. | Incorrect CMOS settings |
| Answer» E. | |
| 283. |
The digital multimeter is set for DC, Ohm and 20k. You will read _____ while measuring a good 2 amp fuse. |
| A. | 0 |
| B. | 0.02 |
| C. | 0.2 |
| D. | 2 |
| Answer» B. 0.02 | |
| 284. |
Which Motherboard form factor uses one 20 pin connector |
| A. | ATX |
| B. | AT |
| C. | BABY AT |
| D. | All of the above |
| Answer» B. AT | |
| 285. |
Which part of the laser printer should NOT be exposed to sunlight? |
| A. | Transfer corona assembly |
| B. | PC drum |
| C. | Primary corona wire |
| D. | Toner cartridge |
| Answer» C. Primary corona wire | |
| 286. |
With respect to a network interface card, the term 10/100 refers to |
| A. | protocol speed |
| B. | a fiber speed |
| C. | megabits per seconds |
| D. | minimum and maximum server speed |
| Answer» D. minimum and maximum server speed | |
| 287. |
Missing slot covers on a computer can cause? |
| A. | over heat |
| B. | power surges |
| C. | EMI. |
| D. | incomplete path for ESD |
| Answer» B. power surges | |
| 288. |
A PCMCIA measuring 10.5mm is what type? |
| A. | type 1 |
| B. | type 2 |
| C. | type 1 and 3 |
| D. | type 3 |
| Answer» E. | |
| 289. |
In ROM BIOS, the acronym BIOS stands for: |
| A. | Basic Intuitive Output Set |
| B. | Basic Input Organizational System |
| C. | Basic Input Output System |
| D. | Basic Industry Operating System |
| Answer» D. Basic Industry Operating System | |
| 290. |
From what location are the 1st computer instructions available on boot up? |
| A. | ROM BIOS |
| B. | CPU |
| C. | boot.ini |
| D. | CONFIG.SYS |
| Answer» B. CPU | |