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試験番号：JK0-U31問題集試験科目：CompTIA E2C Strata IT Technology Exam
最近更新時間：2014-07-30
問題と解答：全276問 JK0-U31 最新な問題集
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試験番号：JK0-U11問題集試験科目：CompTIA Strata Fundamentals of PC Functionality Exam
最近更新時間：2014-07-30
問題と解答：全114問 JK0-U11 練習問題
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NO.1 Which of the following features are related to power management? Each correct answer
represents a complete solution. Choose two.
A. Hot plugging
B. Hibernate mode
C. Standby mode
D. Safe mode
Answer: B,C
CompTIA虎の巻 JK0-U31取得 JK0-U31 JK0-U31虎の巻
Explanation:
The Hibernate mode and Standby mode are features related to power management. Hibernate
mode is a power saving feature for computers. In hibernate mode, the current state of a computer
is saved to the hard disk, and the computer shuts down. A user will have to power on the computer
to restore the previous settings. When a computer resumes from hibernate mode, it reads the
saved settings from the disk and restores the system state as it was before it entered hibernate
mode. By default, hibernate mode is disabled. If a computer is not ACPI-enabled or APM-enabled,
users will have to enter hibernate mode manually. Users cannot set the computer to automatically
hibernate after a certain time. With ACPI-enabled and APM-enabled computers, users are able to
set hibernate mode automatically. The standby mode is a power saving feature for computers. In
this mode, a computer does not shut down completely. The computer goes to low power state and,
as a result, it consumes less power. When the computer resumes from the standby mode, full power
is restored to its devices. During the standby mode, if the power supply
is disconnected or interrupted, data might be
lost. The standby mode is available automatically on ACPI-enabled or APM-enabled computers.
Users do not need to enable this mode manually. This mode is not available in non-ACPI and
non-APM based computers. Answer option A is incorrect. Hot plugging is a feature in which a device
can be installed or removed while the computer is running. Answer option D is incorrect. Safe Mode
is a Windows feature used to start a computer with basic drivers, such as mouse, keyboard, etc. It
bypasses blocking issues, such as system corruption, or installation of incompatible drivers or
system services, enabling the Administrator to resolve such issues.
NO.2 Which of the following transmits all ATSC HDTV standards and supports 8-channel digital audio?
A. DVI
B. S-Video
C. SVGA
D. HDMI
Answer: D
CompTIA特典 JK0-U31独学 JK0-U31体験 JK0-U31初心者
Explanation:
HDMI stands for High-Definition Multimedia Interface. It is a standard, uncompressed, and all-digital
audio/video interface. HDMI is capable of delivering the highest quality digital video and multi-
channel digital audio on a single cable. It provides an interface between any audio/video sources,
such as a DVD player or a computer and a digital television (DTV) or video monitor. HDMI transmits
all ATSC HDTV standards and supports 8-channel digital audio, with extra bandwidth to
accommodate future enhancements. HDMI has two types of connectors. Type A and Type B.
Type A and Type B connectors use 19 pins and 29 pins, respectively. The Type B connector is
designed for very high-resolution displays that are expected in near future. Answer option B is
incorrect. S-Video, also known as Y/C video, stands for Super-Video. It is a technology for video
transmission. Using this technology, the video is transmitted into two separate signals.
One is used for color, and the other for brightness. Sometimes S-Video signals are considered as a
type of component video signal. However, its quality is inferior to other complex component video
schemes such as RGB. This technology produces sharper images than those produced by composite
video, which carries the entire set of signals in a single line. For using S- Video, the device sending
the signal must support S-Video output and the device receiving the signal needs to have an
S-Video input jack. Answer option A is incorrect. DVI stands for Digital Visual Interface. It is a
standard for high speed, high resolution digital display invented by Digital Display Working Group
(DDWG). DVI accommodates analog and digital interfaces with a single connector. New video cards
have DVI as well as VGA ports built into them. Most of LCD monitors come with a 15-pin VGA
connection cable, even if they are capable of handling digital signals coming from DVI connections.
However, some monitors come with both types of cables. DVI has three main categories of
connectors. They are. DVI-A, DVI-D, and DVI-I. DVI-A is an analog-only
connector, DVI-D is a digital-only connector, and DVI-I is an analog/digital connector. DVI-D and DVI-I
connectors are of two types. single link and dual link. DVI supports UXGA and HDTV with a single set
of links. Higher resolutions such as 1920 x 1080, 2048 x 1536, or more can be supported with dual
links. Answer option C is incorrect. A VGA or SVGA connector is a 15-pin, three rows, female
connector, on the back of a PC used for connecting monitors. Reference:
"http.//en.wikipedia.org/wiki/High-Definition_Multimedia_Interface"
NO.3 Which of the following devices is used for accessing the data on Secure Digital (SD)
card, MMC card, and CompactFlash (CF)?
A. E-book reader
B. Memory card reader
C. Smart card reader
D. Barcode reader
Answer: B
CompTIA JK0-U31番号 JK0-U31参考書 JK0-U31過去 JK0-U31対策 JK0-U31内容
Explanation:
A memory card reader is a device, typically having a USB interface, for accessing the data on a
memory card such as a CompactFlash (CF), Secure Digital (SD) or MultiMediaCard (MMC). Answer
option C is incorrect. Smart card readers are used to read smart cards. It is used as a
communications medium between the smart card and a host. Answer option D is
incorrect. A barcode reader (or barcode scanner) is an electronic device for reading printed
barcodes. Answer option A is incorrect. There is no such device as e-book reader.
NO.4 Which of the following are types of LCD monitors? Each correct answer represents a complete
solution. Choose two.
A. SVGA
B. Active Matrix
C. Passive Matrix
D. X-Matrix
Answer: B,C
CompTIA認証試験 JK0-U31スクール JK0-U31認定資格 JK0-U31入門
Explanation:
Two types of LCDs are available. Active matrix Passive matrix Active matrix LCDs uses individual
transistors to control each pixel on the screen. This type of LCD consumes
more power but provides sharper images than the passive matrix LCD. Passive matrix Passive matrix
screens do not refresh quickly to rapid changes. The passive matrix screen displays weak colors.
LCDs consume less power and are cheaper than Active matrix LCDs. Answer option A is incorrect.
SVGA is a type of CRT monitor used with the Desktop computers, and not the LCD monitor. Answer
option D is incorrect. There is no LCD display type such as X-Matrix.
NO.5 You are handling IT support for a sales company. One of the sales representatives complains
that his laptop does not have a network card. You wish to add one via an expansion slot. What type
of expansion card should you use?
A. MCA
B. PCMCIA
C. PCI
D. AGP
Answer: B
CompTIA学習 JK0-U31内容 JK0-U31勉強法 JK0-U31 PDF JK0-U31対策 JK0-U31
Explanation:
PCMCIA is a widely used expansion card slot for laptops. What is PCMCIA card? Personal Computer
Memory Card International Association (PCMCIA) card is also known as PC card. The PC card uses a
small expansion slot and is primarily used in laptops. However, PC cards are also available in some of
the desktop computers. There are three types of PCMCIA cards. 1.Type I 2.Type II 3.Type III Answer
option C is incorrect. PCI slots are used in PC's, not laptops. Answer option D is incorrect. AGP is a
legacy
graphics slot for PC's. What is AGP (Accelerated Graphics Port)? AGP is a high speed 32-bit bus
designed for high performance graphics and video support. It allows a video card to have direct
access to a computer's RAM, which enables fast video performance. AGP provides a bandwidth of
up to 2,133 MB/second. Answer option A is incorrect. MCA is a legacy PC slot.
Reference:
http.//www.wisegeek.com/what-is-an-expansion-card.htm
NO.6 Which of the following statements about a riser card is true?
A. It is used to connect a computer in a network.
B. It is used to connect extra microprocessors.
C. It provides extra memory for expansion cards.
D. It is used to extend slots for expansion cards.
Answer: D
CompTIA学習 JK0-U31認定 JK0-U31 JK0-U31 JK0-U31練習問題 JK0-U31練習問題
Explanation:
Riser card is a circuit board that is used to extend slots for expansion cards and provides the ability
to connect additional expansion
cards to the computer. These cards are used with LPX motherboards.
With the introduction of ATX motherboards, riser cards are rarely used. In ATX motherboards, the
expansion cards
connect directly to the computer motherboard instead of using riser cards. What is
LPX? LPX is a motherboard form or that is used in some desktop computers. In
LPX motherboards, expansion cards are inserted into a riser card that contains several
slots. Unlike other common form ors such as AT and ATX, the expansion cards in LPX
are not vertical, but parallel to the motherboard. The LPX form or is designed for
smaller cases, and usually it is used for connecting two or three expansion cards.
NO.7 Which of the following devices can cause great harm to one's life with lethal electric shocks?
Each correct answer represents a complete solution. Choose two.
A. SMPS
B. Floppy drive
C. Monitor
D. Keyboard.
Answer: A, C
CompTIA参考書 JK0-U31初心者 JK0-U31学校 JK0-U31スクール JK0-U31教育
Explanation:
A computer monitor and SMPS are at high voltage. Therefore, these devices can be fatal. They
usually have large amount of electric charge stored in capacitors for days after they have been
unplugged from power source. What is SMPS? Switch Mode Power Supply (SMPS) is a device that
converts raw input power to controlled voltage and current for the operation of electronic
equipment. SMPS uses switches for high efficiency. Answer options D and B are incorrect.
Keyboards and floppy drives do not store electric charge. Therefore, they cannot cause lethal
electric shocks.
NO.8 Which of the following can be used to accomplish authentication? Each correct answer
represents a complete solution. Choose all that apply.
A. Biometrics
B. Encryption
C. Password
D. Token
Answer: A,C,D
CompTIA JK0-U31模擬 JK0-U31内容
Explanation:
The following can be used to accomplish authentication.
1.Password
2.Biometrics
3.Token A password is a secret word or string of characters that is used for authentication, to prove
identity, or gain access to a resource. What is authentication? Authentication is a process of
verifying the identity of a person, network host, or system process. The authentication process
compares the provided credentials with the credentials stored in the database of an authentication
server. What is biometrics?Biometrics is a method of authentication that uses physical
characteristics, such as fingerprints, scars, retinal patterns, and other forms of biophysical qualities
to identify a user. Nowadays, the usage of biometric devices such as hand scanners and retinal
scanners is becoming more common in the business environment. A token may be a physical device
or software token that an authorized user of computer services is given to ease authentication.
Answer option B is incorrect. Encryption can be used to accomplish security and not authentication.
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