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Total 273 questions
Your office uses Windows Vista. This morning, a patch was applied automatically.
Suddenly, the users who have scanners attached to their computers complain that they cannot access the scanners. When you check their Device Manager, you notice there is no exclamation point next to the scanner. What should you do now?
Answer : C
Explanation:
Sometimes a patch may cause problems for an existing device driver.Usually, you simply uninstall and then reinstall the driver. This way the driver is installed after the patch.
Answer option D is incorrect. Patches often have key security updates. Simply leaving the machine unpatched is never a good idea.
Answer option Ais incorrect. This drastic step will return you to the pre-patch state, but then you will still need to apply that patch, and still have to deal with this problem.
Answer option B is incorrect. The scanner worked with Vista before the patch. This indicates that it is Vista compatible.
Reference. http.//support.microsoft.com/kb/948187/en-us
Which ofthe following refers to a location away from the computer center where document copies and backup media are kept?
Answer : A
Explanation:
Off-site storage refers to alocation away from the computer center where documents copies and backup media are kept. This storage method is more secure but less convenient and more costly.
Answer option D is incorrect. Onsite storage refers to the same location where the work placeis. It is considered more convenient but less secure in case of disaster.
Answer option C is incorrect. A storage area network (SAN) is an architecture to attach remote computer storage devices (such as disk arrays, tape libraries, and optical jukeboxes) to servers in such a way that the devices appear as locally attached to the operating system.
Answer option B is incorrect. Network attached storage (NAS), in contrast to SAN, uses file-based protocols such as NFS or SMB/CIFS where it is clear that the storage is remote, and computers request a portion of an abstract file rather than a disk block.
Which of the following is an international standard for energy efficient consumer products?
Answer : A
Explanation:
Energy Star rating is an international standard for energy efficient consumer products.
The Energy Star rating is an international standard for energy efficient consumer products.
Devices carrying the Energy Star logo are products, such as computerdevices, peripherals, kitchen appliances, etc. These products generally use 20% to 30% lesser energy than required by the federal standards. The Energy Star program was created by the 'United
States Environmental Protection -
Agency' (US EPA) as an attempt to reduce energy consumption and greenhouse gas emission by power plants. The program has helped in spreading the use of LED traffic lights, efficient fluorescent lighting, and power management systems for office equipments.
Answer option C is incorrect. Trusted Computer System Evaluation Criteria (TCSEC), frequently referred to as the Orange Book, is the centerpiece of the DoD Rainbow Series publications. It is a
United States Government Department of Defense (DoD) standard that sets basic requirements forassessing the effectiveness of computer security controls built into a computer system. TCSEC was used to evaluate, classify and select computer systems being considered for the processing, storage and retrieval of sensitive or classified information. It was replaced with the development of the
Common Criteria international standard originally published in 2005.
Answer option B is incorrect. The standby mode is a power saving feature for computers. In this mode, a computer does not shut down completely. Thecomputer 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 D is incorrect. The Advanced Configuration and Power Interface (ACPI) is a powermanagement specification developed by Intel, Microsoft, and Toshiba. It enables an operating system to control the amount of power supplied to each device attached to a computer by turning off peripheral deviceswhen they are not in use. Itdefines power management on a wide range of mobile, desktop, and server computers and peripherals. It also enables manuurers to produce computers that automatically power up as soon as a user touches the keyboard. Reference. "http.//en.wikipedia.org/wiki/Energy_Star"
Your customers Windows XP machine has become unusable due to some unknown cause.
You want to put the computer into a working state again. What is the best way to do this?
Answer : C
Explanation:
When your system becomes unusable and you cannot trace the cause, it may become necessary to do a Windows Recovery. This will require the Windows Recovery CD and the
Windows Recovery Console.
Recovery Console is a command-line console thatenables administrators to repair a computer. From
Recovery Console, administrators can start and stop services, read and write data on a local drive, repair the master boot record (MBR), format drives, and perform other administrative tasks. The
RecoveryConsole can be run using the following two ways: In case the computer does not start, Recovery Console can be run using the Windows setup CD-ROM. Otherwise, the Recovery Console can be run from the option in the boot menu.
Answer option A is incorrect. TheCD will not work by itself; you need to use the Windows
Recovery -
Console also. Answer option D is incorrect. You do not know if the software is causing the problem or if an uninstall will correct it. Answer option B is incorrect. Recovery is a better option and is quicker and less disruptive than a full installation.
Reference: http://support.microsoft.com/kb/307654
Which of the following storage device uses SRAM or DRAM?
Answer : B
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 itin 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 SRAMor 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 ashorter 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"
Which of the following display standards provides four times more pixels than an 800x 600 display?
Answer : D
Explanation:
UXGA stands for Ultra eXtended Graphics Array. It is a display standard that refers to video adapters.
This display standard is capable of displaying the resolution of 1600 x 1200pixels. A UXGA display provides four times more pixels than an 800 x 600 display.
Answer option A is incorrect. SXGA stands for Super eXtended Graphics Array. It is a display standard that refers to video adapters. This standard is an enhancement of the standard XGA resolution developed by IBM. It is capable of displaying the resolution of
1280 x 1024 pixels.
Answer option B is incorrect. SXGA+ stands for Super eXtended Graphics Array Plus and is a computer display standard. An SXGA+ display is commonly used on 14-inch or 15-inch laptop LCD screens with a resolution of 1400 1050 pixels. SXGA+ is also the maximum resolution native to many high-end video projectors. An SXGA+ display is used on a few 12 inch laptop screens such as theThinkPad X60 & X61.
Answeroption C is incorrect. SVGA standard normally refers to a resolution of 800 x 600 pixels.
Reference. "http.//en.wikipedia.org/wiki/UXGA"
Which of the following aims to restrict certain dangerous substances commonly used in electronics and electronic equipment?
Answer : A
Explanation:
The Restriction of Hazardous Substances (RoHS) directive aims to restrict certain dangerous substances commonly used in electronics and electronic equipment.
Answer option D is incorrect. The World Wide Web Consortium (W3C) is an international industry consortium that develops common standards for the World Wide Web to promote its evolution and interoperability. It was founded in October 1994 by Tim Berners-Lee, the inventor of the
Web, at the Massachusetts Institute of Technology, Laboratory for Computer Science
[MIT/LCS] in collaboration with CERN, where the Web had originated , with support from
DARPA and the European Commission.
Answer option C is incorrect. Internet Engineering Task Force (IETF) is an open international community of network designers, operators, vendors, and researchers concerned with the evolution of the Internet architecture and coordination of the operation and management of the Internet. It works towards introducing procedures for new technologies on the Internet. IETF specifications are released in Requests for
Comments (RFCs).
Answer option B is incorrect. The Institute of Electrical and Electronic Engineers(IEEE) is a society of technical professionals. It promotes the development and application of electro- technology and allied sciences. IEEE develops communications and network standards, among other activities. The organization publishes number of journals, has many local chapters, and societies in specialized areas.
Reference. "http.//www.rohs.gov.uk/Default.aspx"
Your customer is very concerned about security for Wi-Fi at his home. He wants to make sure that only computers, he has authorized, can get on his Wi-Fi. What is the most appropriate security measure you can recommend?
Answer : C
Explanation:
Mac filtering only allows computers, which have their MAC address listed with the router, to connect.
What is MAC address filtering?
MAC address filtering is a security method that enables a device to allow only certain MAC addresses to access a network. It can be configured on a Wireless Access Point (WAP) to allow only certainsystem MAC addresses to communicate with the rest of the network.
MAC address filtering can be performed using either of the two policies. exclude all by default, then allow only listed clients; or include all by default, then exclude listed clients.
MACfiltering can also be used on a wireless network to prevent certain network devices from accessing the wireless network. MAC addresses are allocated only to hardware devices, not to persons.
Answer options D and B are incorrect. Any encryption will be based on password authentication, not on filtering specific computers. Only MAC filtering will do that.
Answer option A is incorrect. A firewall will not prevent people or computers from connecting to your Wi-Fi. It will block certain, unwanted connections.
Reference. http.//compnetworking.about.com/cs/wirelessproducts/qt/macaddress.htm
Which of the following statements is true about modem?
Answer : B
Explanation:
Modem converts digital signals into analog signals and vice versa. Modem is a device used by computers to communicate overlong distances through Public Service Telephone Lines
(PSTN).
Modem stands for Modulator and Demodulator. When a computer sends data, it uses digital signals.
Modem converts these digital signals into analog signals and transmits the data over
PSTN. At thereceiving end, modem converts the analog signals back to digital signals and delivers to the receiving computer.
Which of the following are dual core processors?
Each correct Answer represents a complete solution. Choose two.
Answer : A,C
Explanation:
The Intel(r) Pentium(r) processor Extreme Edition and AMD Athlon(tm) 64 X2 are dual core technology processors manuured by Intel and AMD, respectively.
What is dual core processor?
A dual core processor is a CPU with twoseparate cores in the same chip. Each core has its own cache. A dual core processor is an equivalent of two microprocessors in a computer.
In a dual core processor, both cores handle incoming data strings simultaneously, resulting in improved efficiency.
Hence a dual core system is faster than a single-core or traditional processor system. A dual core processor does not require a new motherboard, but can be used in existing boards having the correct socket. Intel and AMD are the companies that are making dual core processors.
Answer options D and B are incorrect. AMD Athlon(tm) and Intel Pentium 4 are not dual core processors.
Reference: "http://www.intel.com/technology/computing/dual-core/"
Which of the following sleep modes is also known as Hibernation in Windows operating systems?
Answer : C
Explanation:
The S4sleep mode is also known as Hibernation or hibernate mode in Windows operating systems. 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.
Answer option D is incorrect. The S1 mode is the most power hungry sleep mode. In this mode, the
CPU stops executing instructions and the processor cash is flushed, but power is still supplied to the CPU and memory. Allother unused devices are powered down.Answer option B is incorrect. The S2 mode uses less power than S1 mode. In this mode, the computer's processor is powered down. Answer option A is incorrect. The S3 mode is also known as Stand by mode. In this mode, the computer supplies power only to the RAM. This mode is also known as Suspend to RAM.
Your client currently has Windows 98 and wishes to upgrade to Windows XP. What is the most efficient way to accomplish this goal?
Answer : A
Explanation:
Windows 98 can be upgraded directly to Windows XP.
Answer option C is incorrect. This is not necessary (but would work).
Answer option B is incorrect. Installing a fresh new copy does not keep the configurations, programs, etc. from the old copy. Upgrading is the best approach here. Answer option D is incorrect. You can upgrade from Windows 98 to XP.
Reference. http.//support.microsoft.com/kb/292607
In which of the following sizes are the Express Card modules available?
Each correct answer represents a complete solution. Choose two.
Answer : A,D
Explanation:
Express Card is a thinner, faster, and lighter modular expansion for desktops and laptops.
Users can add memory, wired or wireless communication cards, and security devices by inserting these modules into their computers.
Express Card slots are designed to accommodate modules that use either Universal Serial
Bus (USB) 2.0 or the PCI Express standard. Express Card modules are available in two sizes, i.e., 34 mm wide (Express Card/34) and 54 mm wide (Express Card/54). Both modules are 75 mm long and 5 mm high.
An Express Card/34 module can be inserted in either a 54 mm slot or a 34 mm slot, but an
Express Card/54 requires a Universal (54 mm) slot. However, an extender can be used with Express Card/34 slot to connect the Express Card/54 module from outside of the computer.
Both the modules are identical in performance. They take full advantage of the features of the PCI Express or USB 2.0 interfaces. The only difference between them is that the
Express Card/54 formor, due to its larger surface area, allows for greater thermal dissipation than does an Express Card/34. As the performance does not vary with module size, module developers usually prefer to fit their applications into the smaller Express
Card/34 form or. But some applications, such as
SmartCard readers, and CompactFlash readers, require the extra width of an Express
Card/54 module. Reference. "http.//en.wikipedia.org/wiki/Express Card"
Which of the following expansion slots can be used to plug a SCSI adapter? Each correct answer represents acomplete solution. Choose all that apply.
Answer : A,C,E
Explanation:
Small Computer System Interface (SCSI) adapters can fit on PCI, EISA, and VESA slots.
Unlike IDE, SCSI interface is generally not built-in onthe motherboard. However, some motherboards do come with integrated SCSI adapters. In most cases, you have to purchase a SCSI adapter and install it into a bus slot. Once the SCSI adapter is installed, you can connect the SCSI devices to the host adapter.
What is SCSI?
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 drive and CD-ROM drive, are better suited in a network environment in which many users access shared drives simultaneously. SCSI has three standards. SCSI-1, SCSI- 2,and SCSI-3.
What is a VESA bus?
VESA is an expansion bus standard developed by Video Electronics Standards Association to provide high-performance video and graphics capabilities.
What is a PCI bus?
Peripheral Component Interconnect (PCI) is a high-performance, 32-bit or 64-bit bus designed to be used with devices that have high bandwidth requirements,such as the display subsystem.
What is an EISA bus?
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. This is accomplished by providing the slot with two layers of connectors. The top layer is identical to a 16-bit ISA slot. The bottom layer is used by an EISA device but ignored by an ISA device. Therefore, both ISA and
EISA devices can work in an EISA slot.
Answer options B and D are incorrect. Slot1 and Slot2 are used for Pentium III processors and Pentium Xeon processors, respectively.
Which of the following terms refers to proprietary software that is provided to users without payment on a trial basis and isoften limited by any combination of functionality, vailability or convenience?
Answer : B
Explanation:
Shareware is a term refers to proprietary software that is provided to users without payment on a trialbasis and is often limited by any combination of functionality, vailability or convenience. Answer option A is incorrect. Spyware is a program that takes partial control over a user's computer without user's permission. Spyware programs can collect varioustypes 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. Freeware is term for computer software that is available for use at no cost or for an optional fee. Answer option D is incorrect. Adware is software that automatically downloads and display advertisements in the Web browser without user permission. When a user visits a site or downloads software, sometimes a hidden adware software is also downloaded to display advertisement automatically. This can be quite irritating to user. Some adware can also be spyware.
Reference: "http://en.wikipedia.org/wiki/Shareware"nocheck