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Code d'Examen: N10-005
Nom d'Examen: CompTIA (Network + Certification Exam)
Questions et réponses: 525 Q&As
Code d'Examen: SG0-001
Nom d'Examen: CompTIA (CompTIA Storage+ Powered by SNIA)
Questions et réponses: 537 Q&As
Code d'Examen: JK0-U31
Nom d'Examen: CompTIA (CompTIA E2C Strata IT Technology Exam)
Questions et réponses: 276 Q&As
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NO.1 Which of the following storage device uses SRAM or DRAM?
A. USB flash drive
B. Solid-state drive (SSD)
C. Blu-ray Disc
D. CD drive
Answer: B
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Explanation:
A solid-state drive (SSD) is a data storage device that uses solid-state memory to store persistent
data. An SSD emulates a hard disk drive interface, thus easily replacing it in most applications. It is
also known as solid-state hard disk drive. SSDs have no moving parts; hence, they are less fragile
and silent than hard disks. As there are no mechanical delays, SSDs usually enjoy low access time
and latency. An SSD using SRAM or DRAM (instead of flash memory) is often called a RAM-drive,
which should not be confused with a RAM disk. Answer option C is incorrect. Blu-ray Disc, also
known as Blu-ray or BD, is an optical disc storage medium. It is designed to supersede the standard
DVD format for storing high-definition video, PlayStation 3 games, and other data, with up to 25 GB
per single layered, and 50 GB per dual layered disc. Blu-ray Disc was developed by the Blu-ray Disc
Association, a group representing makers of consumer electronics, computer hardware, and motion
pictures. The disc has the same physical dimensions as standard DVDs and CDs. It is called Blu-ray
Disc because of the blue-violet laser which is used to read the disc. Blu-ray uses a shorter
wavelength, a 405 nm blue-violet laser, and allows for almost six times more data storage than on a
DVD. Answer option D is incorrect. CD drive is used for read/write operations on CDs. The CD drives
that are capable of performing write operations on CDs are also known as CD burners.
However, most of the CD drives on computers have read only capability. CD drives with read-only
capability are also known as CD-ROM (Compact Disc Read-Only Memory) drives.
A CD drive is installed inside the computer case and can be connected to IDE, SCSI, SATA, or firewire
interface. Answer option A is incorrect. A USB flash
drive consists of flash memory data storage device integrated with a USB (Universal Serial Bus) 1.1
or 2.0 interface.
Reference: "http.//en.wikipedia.org/wiki/Solid-state_drive"
NO.2 Which of the following programs can collect various types of personal information,
such as Internet surfing habits, and Web sites that the user has visited?
A. Malware
B. Spyware
C. Honeypot
D. Worm
Answer: B
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Explanation:
Spyware is a program that takes partial control over a user's computer without user's permission.
Spyware programs can collect various types of personal information, such as Internet surfing habits,
and Web sites that the user has visited. Spyware programs can also interfere with the control of a
user's computer, such as installing additional software, redirecting Web browser activities, accessing
Web sites blindly, etc. Answer option C is incorrect. A honeypot is a term in computer terminology
used for a trap that is set to detect, deflect, or in some manner counteract attempts at unauthorized
use of information systems. Generally it consists of a computer, data, or a network site that appears
to be part of a network, but is actually isolated, and monitored, and which seems to contain
information or a resource of value to attackers. Answer option A is incorrect. The term malware
refers to malicious software, which is a broad class of malicious viruses, including spyware. Malware
is designed to infiltrate or damage a computer without the consent of the owner. Answer option D
is incorrect. A worm is a software program that uses computer networks and security holes to
replicate itself from one computer to another. It usually performs malicious actions, such as using
the resources of computers as well as shutting down computers.
Reference: "http.//en.wikipedia.org/wiki/Spyware"
NO.3 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
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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.4 You are working with a team that will be bringing in new computers to a sales department at
a company. The sales team would like to keep not only their old files, but system settings as well on
the new PC's. What should you do?
A. Do a system backup (complete) on each old machine, then restore it onto the new machines.
B. Use the Disk Management tool to move everything to the new computer.
C. Use the User State Migration tool to move the system settings and files to the new machines.
D. Copy the files and the Windows Registry to a removable media then copy it onto the new
machines.
Answer: C
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Explanation:
The User State Migration Tool is made specifically for this purpose. Large scale migrations require
not only files but system settings to be moved to new machines and Microsoft created this tool for
this purpose. What is User State Migration Tool (USMT)? User State Migration Tool (USMT) is used
to migrate user files and settings during large deployments of Microsoft Windows XP and Microsoft
Windows Vista operating systems. It captures desktop, and application settings, as well as user
accounts and users' files, and then migrates them to a new Windows installation. It helps
administrators to improve and simplify migration process. USMT can be used for both side-by-side
and wipe-and-load migrations. USMT component SCANSTATE.EXE
is used to collect the files and settings from the source computer and the LOADSTATE.EXE
component is used to restore the user state onto the destination computer. Answer option D is
incorrect. Moving the Windows registry will not work and could in cause major problems on the
new system. This is especially true if the new system has a more modern version of Windows.
Answer option B is incorrect. The disk management
tool is used for managing disk partitions. Answer option A is incorrect. A complete backup will likely
cause problems on the new installations. This is especially true if the new system has a more
modern version of Windows.
Reference: http.//technet.microsoft.com/en-us/library/bb457090.aspx
NO.5 Which of the following ports on a computer are used to connect a keyboard? Each correct
answer represents a complete solution. Choose two.
A. USB
B. DB-25
C. PS/ 2
D. DB-9
Answer:
A, C
Explanation:
The PS/ 2 and USB ports on a computer are used to connect a keyboard. What is USB? Universal
Serial Bus (USB) is a high speed bus standard developed by Compaq, IBM, DEC, Intel, Microsoft, NEC,
and Northern Telecom. It provides the Plug and Play capability of Windows to external hardware
devices. USB supports hot plugging, which means that a USB device can be installed or removed
while the computer is running. A single USB port can be used to connect up to 127 peripheral
devices, such as CD-ROM drives, tape drives, keyboards, scanners etc. USB 1.1 has a maximum data
transfer rate of 12 Mbps, whereas USB 2.0 has a maximum data transfer rate of 480 Mbps. USB 2.0
is fully backward compatible with USB 1.1. Answer options D and B are incorrect. The DB-9 and
DB-25 port types on the computer are used as serial ports. A DB-9 male type port has 9 pins,
whereas a DB-25 male type port has 25 pins. What is a serial port? Serial port is the primary means
for connecting modems and mouse to a computer. There are two types of serial port connectors,
9-pin and 25-pin. The word serial refers to the data is sent in series, one bit at a time, over a single
wire. This design is significantly slower than sending 8 bits at a time via a parallel channel, but serial
signals can travel much farther without degradation.
NO.6 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
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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.7 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
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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.
NO.8 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
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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.
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