Free download CompTIA certification JK0-U21 exam practice questions and answers

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Exam Code: JK0-U21
Exam Name: CompTIA (CompTIA Strata Fundamentals of PC Technology Exam)
One year free update, No help, Full refund!
Total Q&A: 241 Questions and Answers
Last Update: 2014-01-26

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NO.1 How many keys does a computer keyboard have?
A. 85
B. 112
C. 104
D. 64
Answer: C

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NO.2 Which of the following is NOT an analog display standard?
A. VGA
B. DVI
C. CGA
D. SVGA
Answer: B

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NO.3 How many colors you can have in a 24-bit color system?
A. 65,536
B. 24,000,000
C. 16,777,216
D. 36,733,216
Answer: C

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NO.4 What is the maximum data transfer rate supported by IEEE 1394b port?
A. 256 Kbps
B. 800 Mbps
C. 256 Mbps
D. 400 Mbps
Answer: B

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NO.5 Which of the following is NOT a parallel port mode?
A. EPP/ECP
B. ECP
C. EPS
D. EPP
Answer: C

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NO.6 Which of the following devices uses charge-coupled device (CCD)?
A. Touch screen
B. Printer
C. Touchpad
D. Image Scanner
Answer: D

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NO.7 Which of the following expansion buses is used in Laptops?
A. PCI
B. PCMCIA
C. MCA
D. ISA
Answer: B

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NO.8 Which of the following PC components has an air filter?
A. Processor
B. LAN Card
C. RAM
D. HDD
Answer: D

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NO.9 Which of the following types of formatting can only be done by the manufacturer?
A. Quick formatting
B. High-level formatting
C. Low-level formatting
D. Initial-level formatting
Answer: C

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NO.10 Identify whether the statement given below is true of false. "A Secure Digital (SD) card is
slightly thicker than a MultiMedia Card (MMC)."
A. False
B. True
Answer: B

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NO.11 Which of the following terms refers to printing on both sides of the paper?
A. Duplex printing
B. Simplex printing
C. Dual printing
D. Multiplex-printing
Answer: A

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NO.12 Which of the following components of a laptop is NOT upgradeable?
A. RAM
B. NIC
C. Hard disk
D. Motherboard
Answer: D

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NO.13 Which of the following is the process of bypassing the CPU?
A. Caching
B. DMA
C. Spoofing
D. Spooling
Answer: B

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NO.14 Which of the following PC components has an air filter?
A. RAM
B. HDD
C. CD-ROM
D. CPU
Answer: B

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NO.15 Which of the following is NOT an expansion slot?
A. MCA
B. EISA
C. PCI
D. USB
Answer: D

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NO.16 What amount of data can a sector hold?
A. 1000 bytes
B. 512 bytes
C. 625 bytes
D. 1024 bytes
Answer: B

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