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JK0-U31 - CompTIA E2C Strata IT Technology - Dump Information
| Vendor | : | CompTIA |
| Exam Code | : | JK0-U31 |
| Exam Name | : | CompTIA E2C Strata IT Technology |
| Questions and Answers | : | 276 Q & A |
| Updated On | : | January 10, 2018 |
| PDF Download Mirror | : | JK0-U31 Brain Dump |
| Get Full Version | : | Pass4sure JK0-U31 Full Version |
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instead
of 2.5 volts used in DDR SDRAM. This results in less power consumption.
DDR2 SDRAM transfers 64 bits of data twice every clock cycle. DDR2
SDRAM memory is not compatible with DDR SDRAM memory slots. Answer
option B is incorrect. A smart card reader is an interface device, which
is used to read information from or write information to a smart card.
It does not use flash memory technology.
QUESTION: 262
Which
of the following statements about the DVI-D connector are true? Each
correct answer represents a complete solution. Choose three.
- It is used only for digital signal connections.
- Its single link connector contains 18 pins.
- It is used for both digital and analog signal connections.
- Its dual link connector contains 24 pins.
Answer: D, A, and B
Explanation:
The
DVI-D is a type of DVI connector. This connector is used only for
digital signal connections. DVI-D connectors come in dual and single
links. The dual link connector contains 24 pins, whereas the single link
connector comes with 18 pins. 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. The DVI-I connector supports both digital and analog
signal connections.
Reference:
QUESTION: 263
Mark
purchases a new computer and installs the Windows 2000 Professional
operating system on it. He wants to connect the computer to the
Internet. Which of the following actions can he take to protect his
computer from unauthorized access, adware, and malware? Each correct
answer represents a complete solution. Choose two.
- Configure a firewall on the computer.
- Configure auditing on the computer.
- Set hidden attributes on his important files.
- Install all the service packs available for the operating system.
Answer: D and A
Explanation:
In
order to protect his computer from unauthorized access, adware, and
malware, Mark can take the following actions: Install all the service
packs available for the operating system. Configure a firewall on the
computer. What is Service Pack? A service pack is a collection of Fixes
and Patches in a single product. A service pack can be used to handle a
large number of viruses and bugs or to update an operating system with
advanced and better capabilities. A service pack usually contains a
number of file replacements. What is a firewall? A firewall is a tool to
provide security to a network. It is used to protect an internal
network or intranet against unauthorized access from the Internet or
other outside networks. It restricts inbound and outbound access and can
analyze all traffic between an internal network and the Internet. Users
can configure a firewall to pass or block packets from specific IP
addresses and ports. Answer option C is incorrect. Setting hidden
attributes on files cannot protect computers from unauthorized access,
adware, and malware. Answer option B is incorrect. Configuring auditing
will not protect computers from unauthorized access, adware, and
malware. Auditing is used to track user accounts for file and object
access, logon attempts, system shutdown, etc. This enhances the security
of the network.
Reference:
TechNet, Contents: " Chapter 2 - Malware Threats"
QUESTION: 264
Which
of the following slots on a motherboard are best for a video card? Each
correct answer represents a complete solution. Choose two.
- PCIe
- PCI
- AGP
- EISA
Answer: C and A
Explanation:
AGP
and PCIe are the best slots for a video card. PCI Express (PCIe), also
known as 3rd Generation I/O (3GIO), is a type of computer bus. It is a
new I/O bus technology that has more bandwidth than PCI and AGP slots.
It uses two low-voltage differential pairs, at 2.5Gb/s in each
direction. It is designed to replace PCI and AGP expansion slots. The
bus is available in several different bus widths: x1, x2, x4, x8, x12,
x16, and
x32.
PCIe is able to transfer data in both directions at a time. PCIe
hardware will work on operating systems that support PCI. 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 D is incorrect. The Extended
Industry Standard Architecture (EISA) is a 32-bit PC expansion bus
designed as a superset of a 16-bit ISA bus. The EISA bus is designed to
increase the speed and expand the data width of the legacy expansion bus
while still supporting older ISA cards. EISA slots are obsolete now.
Answer option B is incorrect. PCIe and AGP slots are better than PCI
slot for a video card.
Reference:
QUESTION: 265
Which of the following do not support encrypted data transmissions?
- Ethernet devices
- Infrared devices
- Wi-Fi devices
- Bluetooth devices
Answer: B
Explanation:
The
infrared devices do not encrypted data transmission. Infrared
technology uses invisible infrared radiations to transmit signals to
short distances. There are two types of communication possible: one in
which the sender and the receiver are visible to each other and are
situated in a straight line. This is known as line-of-sight mode; the
other type of communication known as diffuse mode does not require the
sender and receiver to be directly visible to each other. This
technology is used in TV sets, cordless microphones, laptops, remote
modems, printers, and other peripheral devices. Answer options D, A, and
C are incorrect. The Bluetooth, Ethernet, and Wi-Fi devices supports
encrypt data transmissions.
Reference:
TechNet, Contents: "Wireless Networking"
QUESTION: 266
Which
of the following actions can a technician take to reduce the chances of
static charges being built up? Each correct answer represents a
complete solution. Choose three.
- Wear silken clothes.
- Do not wear wrist strap.
- Remove carpets from computer rooms.
- Wear cotton clothes.
E: Increase humidity level.
Answer: D, C, and E
Explanation:
In
order to reduce the chances of static charges being built up, users or
technicians will have to take the following steps: Wear cotton clothes.
This will reduce the chance of building up of static charges. Do not
cover the computer room's floor with carpets. This stops neutralizing of
static charges. Increase humidity level. Humidity helps dissipate
static charges. What is ESD? ESD stands for Electrostatic discharge. The
static electricity that we generate everyday creates ESD. If you walk
across a carpet and touch someone, you experience a mild shock.
Electrostatic discharge occurs when the electrostatic charge is
transferred from one charged entity to another entity sensitive to that
charge. To minimize Electrostatic discharge (ESD) problems, consider
wearing a wrist strap when you are working with computer components. A
wrist strap is a wire with a watchband-style strap at one end and a plug
or clip on the other end. The wrist strap plug or clip is connected to
the ground or to the piece of equipment being worked on. Answer option A
is incorrect. A technician should not wear silken clothes during
computer servicing, as silken clothes are more likely to generate static
charges than cotton clothes. Answer option B is incorrect. Wearing
wrist strap will keep a technician grounded. Hence, static charges
cannot build up.
Reference:
QUESTION: 267
Which
of the following are a form of online advertising on the World Wide Web
intended to attract Web traffic or capture email addresses?
- Pop-ups
- Signed script policy:
- Cookies
- Java applet
Answer: A
Explanation:
Pop-up
ads or pop-ups are a form of online advertising on the World Wide Web
intended to attract Web traffic or capture email addresses. It works
when certain Web sites open a new Web browser window to display
advertisements. The pop-up window containing an advertisement is
usually generated by JavaScript, but can be generated
by
other means as well. Answer option C is incorrect. A cookie is a small
bit of text that accompanies requests and pages as they move between Web
servers and browsers. It contains information that is read by a Web
application, whenever a user visits a site. Cookies are stored in the
memory or hard disk of client computers. A Web site stores information,
such as user preferences and settings in a cookie. This information
helps in providing customized services to users. There is absolutely no
way a Web server can access any private information about a user or his
computer through cookies, unless a user provides the information. A Web
server cannot access cookies created by other Web servers. Answer option
B is incorrect. Signed script policy is a policy in which testing is
required to check the identity of a user sending requests from a Web
browser. In this policy, when a receiver receives a request from the
user to access some resources of his computer, he can grant or deny the
access on the basis of whether the request is coming from a trusted or a
non-trusted source. If the receiver permits the request, the code will
run on the browser after further checks. An author converts the code in
the form of an encrypted text, which is recreated on the browser as a
simple text. The code will not run on the browser if there is any
modification in the text. Answer option D is incorrect. A Java applet is
a software program written in Java language. It is distributed as an
attachment in a Web document and executed in a Java- enabled Web
browser. Java applets can run on almost any operating system without
requiring recompilation.
QUESTION: 268
Which of the following is a fake target that deters hackers from locating your real network?
- Honeypot
- KFSensor
- Malware
- Spyware
Answer: A
Explanation:
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 B is
incorrect. KFSensor is a Windows-based honeypot Intrusion Detection
System (IDS). It acts as a honeypot to attract and log potential
hackers by simulating vulnerable system services and
Trojans. It has highly configurable features of detailed logging, analysis of attack, and
security
alerts. When using the KFSensor, a user can create different types of
scenarios, such as what action should be taken when access to a honeypot
is attempted. KFSensor contains many innovative and unique features,
such as remote management, a Snort compatible signature engine, and
emulations of real servers (e.g. FTP, POP3, HTTP, Telnet and SMTP) to
deceive the hacker and gain more valuable information about his
motives.
Answer option C 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. 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.
QUESTION: 269
Which of the following are removable storage devices/media? Each correct answer represents a complete solution. Choose three.
- CD-ROM
- SD card
- Hard disk drive
- USB Pen drive
Answer: A, B, and D
Explanation:
CD-ROM,
SD card, USB Pen drive, floppy disk, etc., are removable storage media.
CD-ROM (Compact Disc Read-Only Memory) is a type of removable storage
optical media. It can store up to 1GB of data, although most common
CD-ROMs store 700MB of data. It comes in a standard size and format, so
users can load any type of CD-ROM into any CD drive or CD-ROM player.
Once data is written to a CD-ROM, it cannot be erased or changed. SD
card is a removable storage device. Secure Digital (SD) card is a
non-volatile memory card format used in portable devices such as mobile
phones, digital cameras, and handheld computers. SD cards are based on
the older MultiMediaCard (MMC) format, but they are a little thicker
than MMC cards. Generally an SD card offers a write-protect switch on
its side. SD cards generally measure 32 mm x 24 mm x 2.1 mm, but they
can be as thin as 1.4 mm. The devices that have SD card slots can use
the thinner MMC cards, but the standard SD cards will not fit into the
thinner MMC slots. Some SD cards are also available with a USB
connector. SD card readers allow SD cards to be accessed via many
connectivity ports such as USB, FireWire, and the common parallel port.
USB Pen drive is a removable storage device. A pen drive is also known
as a USB flash drive. It is a small device used to transfer data from
one computer to another through USB ports. Pen drives are available in
various capacities. When a pen drive is plugged into the USB
port, Windows
Explorer shows it as a removable drive. Answer option C is incorrect. The hard disk
drive
is not a removable storage media. It is installed inside the computer
case. It can store large amounts of data and provides fast
read/write performance. HDD can be connected to a computer with the
Integrated Device Electronics (IDE), Small Computer System Interface
(SCSI), and SATA interface. It consists of inflexible
platters
coated with material in which data is recorded magnetically with
read/write heads. Note: Only external hard disk drives are removable
devices.
QUESTION: 270
Which
of the following statements about Hardware Compatibility List (HCL) are
true? Each correct answer represents a part of the solution. Choose
two.
- It ensures that a computer and its components are compatible with the operating system before the operating system is installed.
- It contains the listing of all the hardware that operating systems vendors have tested with their operating systems.
- It ensures that a computer and its components are working properly.
- It contains the license to use operating systems.
Answer: B and A
Explanation:
The
Hardware Compatibility List (HCL) contains the listing of all the
hardware that operating systems vendors have tested with their operating
systems. Through HCL, an administrator can be sure that a computer and
its components are compatible with the operating system before the
operating system is installed. HCL helps administrators to verify that
the CPU, RAM, storage devices, various interface cards, and other
hardware components are supported by the operating systems.
Reference:
QUESTION: 271
Which of the following is the bandwidth of an SCSI Ultra2 Wide I/O port?
- 50 MBps
- 160 MBps
- 320 MBps
- 80 MBps
Answer: D
Explanation:
The
SCSI Ultra2 Wide I/O port has a bandwidth of 80 MBps. Small Computer
System Interface (SCSI) is the second most popular drive interface in
use today after the Integrated Drive Electronics (IDE) interface. SCSI
is faster than IDE and supports more devices. SCSI devices, such as hard
disk drives and CD-ROM drives, are better suited to a
network environment in which many users access shared drives
simultaneously.
SCSI has three standards: SCSI-1, SCSI-2, and SCSI-3. Answer option A
is incorrect. The IEEE 1394a S400 I/O port has a bandwidth of 50 MBps.
Answer option B is incorrect. The SCSI Ultra3 I/O port has a bandwidth
of 160 MBps. Answer option C is incorrect. The SCSI Ultra4 port has a
bandwidth of 320 MBps.
QUESTION: 272
How many pins are available on a PS/2 Mini-DIN connector?
- 5
- 4
- 6
- 3
Answer: C
Explanation:
A
PS/2 Mini-DIN connector has 6-pins , while only four are used. Pin 1 is
used for keyboard data signal, pin 3 is ground, pin 4 has +5 Volt DC,
pin 5 is used for keyboard clock, and pins 2 and 6 are not used. The
PS/2 6-pin Mini-DIN connector is used for both keyboard and mouse. Older
keyboard connectors use 5-pin DIN connector.
QUESTION: 273
Which of the following does the image denote?
- Ground
- Capacitor
- Resistor
- Terminator
Answer: A
Explanation:
QUESTION: 274
You are selecting memory to put in to a laptop. Which of the following types of RAM chips would you most likely select?
- 144 PIN
- 72 PIN
- 240 PIN
- 184 PIN
Answer: A
Explanation:
Both
MicroDIMM and SO-DIMM come in a 144 pin configuration, and are used for
laptops. What is SO-DIMM? Small Outline Dual Inline Memory Module
(SO-DIMM) is a type of memory module that comes in 72 pins and 144 pins.
The 72-pin SO-DIMM supports 32-bit transfers, and the 144-pin SO-DIMM
supports 64-bit transfers. It was introduced for laptops. SO-DIMMs come
in smaller packages, consume lesser power, but are more expensive than
DIMMs. Answer option B is incorrect. The 72-pin is a legacy chip used in
PC's. Answer option D is incorrect. The 184-pin is used in DDR RAM in
PC's. Answer option C is incorrect. The 240-pin is used in DDR2 and DDR3
RAM in PC's. What is DDR3 SDRAM? DDR3 SDRAM or double-data-rate three
synchronous dynamic random access memory is a random access memory
interface technology used for high bandwidth storage of the working data
of a computer or other digital electronic devices. DDR3 is part of the
SDRAM family of technologies and is one of the many DRAM
implementations. DDR3 SDRAM is an improvement over its predecessor,
DDR2 SDRAM, and the two are not compatible. The primary
benefit of DDR3 is the ability to transfer at twice the data rate of DDR2, thus enabling
higher
bus rates and higher peak rates than earlier memory
technologies. DDR3 memory power consumption is 30% less as compared to
DDR2 modules.
Reference:
QUESTION: 275
Which of the following is the lightest but most expensive battery used in laptops?
- NiMH
- NiCad
- Li-Ion
- Sodium-Ion
Answer: C
Explanation:
Li-Ion
or Lithium Ion battery is the lightest but most expensive battery used
in laptops. Li-Ion battery has a longer life as compared to NiCad and
NiMH batteries. Answer option B is incorrect. Nickel-Cadmium (NiCad)
batteries are no longer used in laptops. NiCad batteries are heavy and
have shorter life as compared to NiMH batteries. Answer option D is
incorrect. There is no battery such as Sodium-Ion. Answer option A is
incorrect. A Nickel-Metal Hydride (NiMH) battery has 30 percent more
life than a NiCad battery. NiMH is more expensive and takes more time to
recharge as compared to NiCad. Some laptops still use NiMH batteries.
QUESTION: 276
Your
customer complains that some of his older Windows XP programs,
particularly some games, won't work in Windows Vist a. What should you
recommend?
- That he buy Vista versions of those programs.
- That he dual boot XP and Vista in order to handle old and new programs.
- That he use the Windows Vista Compatibility Mode.
- Unfortunately he won't be able to use those programs.
Answer: C
Explanation:
The
Windows Vista Compatibility mode was created for just this sort of
issue. The application compatibility mode is a feature of Windows Vista.
The compatibility mode allows application installed on Windows Vista
computer to run in an environment that emulates a previous version of
Windows. Windows Vista's application compatibility mode can emulate the
following environments :
Windows 95
Windows 98
Windows
NT 4.0 (SP5) Windows 2000 Windows XP (SP2) Windows Server 2003 (SP1)
Note: Windows Vista compatibility mode works only for programs that are
not part of Windows Vista. Answer option B is incorrect. Dual booting is
more complex and in this case unnecessary. Answer option A is
incorrect. Eventually he may wish to buy Vista versions, but he can run
the XP versions now with the Windows Vista Compatibility mode. Answer
option D is incorrect. He can use the old XP programs.
Reference:
" windowshelp.microsoft.com/Windows/en-US/help/bf416877-c83f-4476-a3da- 8ec98dcf5f101033.mspx"
CompTIA JK0-U31 Exam (CompTIA E2C Strata IT Technology) Detailed Information
JK0-U31 - CompTIA E2C Strata IT Technology
JK0-U31 Test Objectives
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Research what’s available, and pick an IT certification that will help you achieve your career goals. Use the CompTIA Career Roadmap to learn about different IT career paths and IT salaries so you can decide which certification may be best for you.From entry-level knowledge in computer hardware and computer software to advanced IT security and IT networking skills, CompTIA IT certifications cover it all:
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It’s a good idea to always understand what you’re training for. That’s why we’re offering not just exam objectives, but also practice questions for download. While the same exact questions will not be on your exam, these will give you a good idea of what to expect when you’re ready to take your certification exam.Be sure to check out online communities on Facebook, LinkedIn and Reddit to see what others are saying about CompTIA exams.
Download Exam Objectives
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You’ve identified the certification you want to take, learned the skills and knowledge covered by the exam and studied the exam objectives and practice questions. Now it’s time to take your test. CompTIA partners with Pearson VUE to deliver our exams around the world. Buy a certification exam voucher and visit a testing center to take your exam.SAVE 10% ON YOUR NEXT EXAM OR CERTMASTER
Congratulations! You’re CompTIA Certified!
With your certification in hand, you’re joining a community of more than 2 million IT professionals who are CompTIA certified. You now have a globally recognized credential that is on your side to grow your IT career.The CompTIA certification logo will help you stand out and earn attention with your resume and LinkedIn profile.
There’s also CompTIA AITP, CompTIA’s association for IT professionals, that provides you with all the tools you need to find your first or next job in IT and fuel up your IT career!
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