universal serial cable unit service cable united serivice cable universal serial bus Submit
Who is the C.E.O of Apple ? Tim cook
Steve ballmer
Jonathan smith Bill Gates Submit
What Linux command displays the last part of a file without editing it? End Foot Last Tail
What IRQ does COM1 commonly use? 2 1 4 3
HTML Tags are case sensitive.
True False
In Perl, what does a scalar variable always begin with? @ # $
%
What is the maximum characters Linux supports in its filenames? 8 128 256 Unlimited
Full form of BIT? Binary Digit Binary Device Busy Device None
A set of 4 bit is called Byte Bit Nibble None
What is the full form of "HTML"?
Hyper Tension Marking Language Hyper Text Markup Language Hyper Text Marking LAN None Of the above
What is the full form of WiFi? Wired Fiction Wired Friction Wireless Fidility Wireless Fiction
What is the battery located on the Hard Disk of a Computer? S-Soft C-Mos BIOS Macintosh
"SMPS" stands for? Switched Machine Powder Set Simple Machinery and Protocol Service Setting Mode Power Service Switched Mode Power Supply Submit
A server is controlled by a/an?
HUB USB LAN WAN
The programme/Software in Windows which helps to protect the Computer info from being shared by
other connected computers in a single server? Windows Essentials
Windows Movie Maker Windows FireWall Windows XP
What does WAN stand for? Wireless Area Network
Wired Area Network Wired-cum-Wireless Area Network Wide Area Network This question has more than one option correct. You have to m mark ark all the correct options.
Facebook was created in the year?
2001 2004 2000 2002
The first iPhone was introduced in the year? 2007 2005 2006 None
Q.1)
Another name for computer programs and information.
A. Output B. Process C. Software (Your Answer) D. CPU
Correct
Q.2)
The part of a computer that allows the user to view information on a screen. A. Mouse B. RAM C. Motherboard D. Monitor (Your Answer)
Incorrect
This Q.3)
part sends signals to other parts of the computer to tell them what to do. A. CPU (Your Answer) B. Motherboard (Correct Answer) C. Icon
D. Hard drive
Correct
Q.4)
This is a flat input device that usually sits in front of the monitor. A. Keyboard (Your Answer) B. Tower C. Mouse D. Laptop
Correct
This Q.5)
memory is for short term storage and is lost when the computer is turned off. A. Icon B. CPU C. Hard drive D. RAM (Your Answer)
Correct
Q.6)
A name for a small picture or image representing a folder or a program. A. Graphic B. Icon (Your Answer) C. Software D. Desktop
Correct
This Q.7)
computer is small enough to fit on your lap and is very portable. A. Laptop (Your Answer) B. Tower C. Computer D. Motherboard
Correct
Q.8)
This part allows the user to hear information from the computer. A. Monitor
B. Software
C. Input D. Speaker (Your Answer)
Correct
Q.9)
Another name for all the parts of a computer.
A. Process B. Hardware (Your Answer) C. Monitor D. Software
Correct
Q.10)
This input device will allow the user to move the pointer on the screen.
A. Mouse (Your Answer) B. Speaker C. Icon D. Output
Unanswered
Q.11)
This type of computer is tall rather than wide.
A. Laptop B. Motherboard C. Hard Drive D. Tower (Correct Answer)
Correct
Q.12)
This device allows the user to record or send their voice into the th e computer.
A. Monitor B. Microphone (Your Answer) C. Output D. Speaker
Correct
Q.13)
This part does the real calculation, moving and processing of information.
A. CPU (Your Answer) B. IBM C. RAM D. Hard Drive
Correct
This Q.14)
is a type of computer that sets on a table or desk.
A. Keyboard B. Laptop C. Hard Drive D. Desktop (Your Answer)
Incorrect
Q.15)
What are the 3 main things a computer does?
A. Input (Missed) B. Save (Your Answer) C. Output (Missed) D. Process (Your Answer) E. Reboot (Your Answer)
Unanswered
This Q.16)
part stores data, programs, prog rams, settings, and the operating system while the computer is off. While it is i s on, it spins inside the computer reading and writing data. A. CPU B. Motherboard C. RAM D. Hard Drive (Correct Answer)
Correct
Select Q.17)
2 input devices
A. Microphone (Your Answer) B. Printer C. Keyboard (Your Answer)
D. Speaker
Incorrect
ut Q.18)
devices
A. Scaner (Your Answer) B. Speaker (Missed) C. Printer (Missed) D. Microphone (Your Answer) E. Monitor (Missed)
Incorrect
Name a type of Disk Drive. Q.19) (Single word or abreviation only please.) Ex. A ____________ Disk Drive.
C(Your Answer) Possible correct answers: floppy flopy hard cd dvd
Correct
Name a type of Disk Drive. Q.20) (Single word or abreviation only please.) Ex. A ____________ Disk Drive.
floppy(Your Answer) Possible correct answers: floppy flopy cd dvd hard
Unanswered
Name a type of Disk Drive. Q.21) (Single word or abreviation only please.) Ex. A ____________ Disk Drive.
Possible correct answers: floppy flopy hard cd dvd
Correct
Name of an Operating System Q.22) A. Dell B. Windows XP (Your Answer) C. Yahoo D. Microsoft
Your Certificate
Print or
Download
Facebook Facebook Twitter Twitter
Your Result
Result » Grade D
Your Answers
Print Report Report
Correct
Q.1)
Another name for computer programs and information.
A. Output B. Process C. Software (Your Answer) D. CPU
Correct
Q.2)
The part of a computer that allows the user to view information on a screen. A. Mouse B. RAM C. Motherboard D. Monitor (Your Answer)
Incorrect
This Q.3)
part sends signals to other parts of the computer to tell them what to do. A. CPU (Your Answer) B. Motherboard (Correct Answer) C. Icon D. Hard drive
Correct
Q.4)
This is a flat input device that usually sits in front of the monitor. A. Keyboard (Your Answer) B. Tower C. Mouse D. Laptop
Correct
This Q.5)
memory is for short term storage and is lost when the computer is turned off. A. Icon B. CPU C. Hard drive D. RAM (Your Answer)
Correct
Q.6)
A name for a small picture or image representing a folder or a program.
A. Graphic
B. Icon (Your Answer) C. Software D. Desktop
Correct
Q.7) This
computer is small enough to fit on your lap l ap and is very portable. A. Laptop (Your Answer) B. Tower C. Computer D. Motherboard
Correct
Q.8)
This part allows the user to hear information from the computer. A. Monitor B. Software C. Input D. Speaker (Your Answer)
Correct
Q.9)
Another name for all the parts of a computer.
A. Process B. Hardware (Your Answer) C. Monitor D. Software
Correct
Q.10)
This input device will allow the user to move the pointer on the screen.
A. Mouse (Your Answer) B. Speaker C. Icon D. Output
Unanswered
Q.11)
This type of computer is tall rather than wide.
A. Laptop B. Motherboard C. Hard Drive D. Tower (Correct Answer)
Correct
Q.12)
This device allows the user to record or send their voice into the computer.
A. Monitor B. Microphone (Your Answer) C. Output D. Speaker
Correct
Q.13)
This part does the real calculation, moving and processing of information.
A. CPU (Your Answer) B. IBM C. RAM D. Hard Drive
Correct
This Q.14)
is a type of computer that sets on a table or desk. d esk.
A. Keyboard B. Laptop C. Hard Drive D. Desktop (Your Answer)
Incorrect
Q.15)
What are the 3 main things a computer does?
A. Input (Missed) B. Save (Your Answer) C. Output (Missed) D. Process (Your Answer)
E. Reboot (Your Answer)
Unanswered
This Q.16)
part stores data, programs, settings, and the operating system while the computer is off. While it is on, o n, it spins inside the computer reading and writing data. A. CPU B. Motherboard C. RAM D. Hard Drive (Correct Answer)
Correct
Select Q.17)
2 input devices
A. Microphone (Your Answer) B. Printer C. Keyboard (Your Answer) D. Speaker
Incorrect
ut Q.18)
devices
A. Scaner (Your Answer) B. Speaker (Missed) C. Printer (Missed) D. Microphone (Your Answer) E. Monitor (Missed)
Incorrect
Name a type of Disk Drive. Q.19) (Single word or abreviation only please.) Ex. A ____________ Disk Drive.
C(Your Answer) Possible correct answers: floppy flopy hard cd dvd
Correct
Name a type of Disk Drive. Q.20) (Single word or abreviation only please.) Ex. A ____________ Disk Drive.
floppy(Your Answer) Possible correct answers: floppy flopy cd dvd hard
Unanswered
Name a type of Disk Drive. Q.21) (Single word or abreviation only please.) Ex. A ____________ Disk Drive.
Possible correct answers: floppy flopy hard cd dvd
Correct
Name of an Operating System Q.22) A. Dell B.
Windows XP (Your Answer) C. Yahoo D. Microsoft
Full Form of LAN- Local Area Network Full form of WAN- Wide Area Network Full form of MAN- Metropolitan Area Network Full form of PAN- Personal Area Network Full form of CAN- Campus Area Network
Full form of JPEG- Joint Photographic Expert Group Full form of GIF- Graphics Interchange Format Full form of BMP- Bitmap Full form of DIB- Device Independent Bitmap Full form of BUS- Bidirectional Universal Switch Full form of PSP- Playstation Portable Full form of DVD- Digital Versatile Disk Full form of HTTP- Hyper Text Transfer Protocol Full form of TCP/IP- Transmission Control Protocol/Internet Protocol Research Projects Projects Agency Agency Network Full form of ARPANET- Advanced Advanced Research Intranet: Its usage is within an organisation which uses the help of internet protocol. Extranet: An extranet is a computer network which allows controlled access from the outside, for specific business or educational purposes. ARPANET: Made by US Department of Defence to communicate within the organization. Now it doesn’t exist Ethernet: It is a cable which allows us to connect to the internet.
The Difference Between a Computer Virus, Worm and Trojan Horse
Trojan horse » » virus protection » » virus » » companion virus » » worm » » The Difference Between Adware & Spyware » » overwriting virus » » file infecting virus » » virus disinfection » » The Difference Between a Cell Phone, Smartphone and PDA » »
» AntiVirus and AntiSpyware Software: What's The Difference? » Banker Trojan » »
Netbus » » malware » » By: Vangie Beal Last Updated: 06-10-2013 , Posted: 06-29-2010 Viruses, worms and Trojan Horses are all malicious programs that can cause damage to your computer, but there are differences among the three. One common mistake that people make when the topic of a computer virus arises is to refer to a a worm worm or Trojan horse as a horse a virus virus.. While the words Trojan, worm and virus are often oft en used interchangeably, they are not exactly the same thing. Viruses, worms and Trojan Horses are all malicious programs programs that can cause damage to your computer , but there are differences among the three, and knowing those differences can help you better protect your computer from their often damaging effects.
What Is a Virus? A computer virus attaches itself to a A a program program or file enabling it to spread from one o ne computer to another, leaving infections as it travels. Like a human virus, virus , a computer virus can range in severity: some may cause only o nly mildly annoying effects while others can damage your hardware, software or files. Almost all viruses are attached to an executable file, which means the virus may exist on your computer but it actually cannot infect your computer an unless you run or open the malicious program. It is important to note that a virus cannot be spread without a human action, (such as running an infected program) to keep it going. Because a virus is spread by human action people will unknowingly continue the spread of a computer virus by sharing infecting files or sending emails with viruses as as attachments in the email.
What Is a Worm? A worm is similar to a virus by design and is considered to be a sub-class of a virus. Worms spread from from computer to computer, but unlike a virus, it has the capability to travel without any human action. A worm takes advantage of file or information transport features on your system, which is what allows it to travel unaided. The biggest danger with a worm is its capability to replicate itself on your system, so rather than your computer sending out a single worm, it could send out hundreds or thousands of copies of itself, creating a huge devastating effect. One example would be for a worm to send a copy of itself to everyone listed in your e-mail address book. Then, the worm replicates and sends itself out to everyone listed in each of the receiver's address book, and the manifest continues on down the line. Due to the copying nature of a worm and an d its capability to travel across networks the end result in most cases is that the worm consumes too much much system memory (or network bandwidth), causing Web Web servers, network servers and individual computers to stop responding. In recent worm attacks such s uch as the much-talked-about Blaster Worm, the worm has been designed to tunnel into your system sys tem and allow malicious users to control your computer remotely.
What Is a Trojan horse? A Trojan Horse is full of as much trickery as the mythological Trojan Horse it was named after. after. The Trojan Horse, at first glance will appear to be useful useful software but will actually do damage once run on your they computer. Those on the receiving end of a Trojan Horse are usually tricked intoinstalled openingor them because appear to be receiving legitimate software or files from a legitimate source. When a Trojan is activated on your computer, the results can vary. Some Trojans are designed to be more mo re annoying than malicious (like changing your desktop , adding silly active desktop icons) or they can cause serious damage by deleting files and destroying information on your system. Trojans are also known to create a backdoor on your computer that gives malicious users access to your system, possibly allowing confidential or personal information to be compromised. Unlike viruses and worms, Trojans do not reproduce by infecting other files nor do they self-replicate.
What Are Blended Threats? Added into the mix, we also have what is called a a blended blended threat threat. A blended threat is a more sophisticated attack that bundles some of the worst aspects of viruses, worms, Trojan horses and and malicious code into one single threat. Blended threats can use server and Internet vulnerabilities to initiate, then transmit and also spread an attack. Characteristics of blended threats are that they cause harm to the infected system or network, they propagates using multiple methods, the attack can come from multiple points, and blended threats also exploit vulnerabilities. To be considered a blended thread, the attack would normally serve to transport multiple attacks in one payload. For example it wouldn't just launch a DoS attack — it would also, for example, install a backdoor and maybe even damage a local system in one shot. Additionally, blended threats are designed to use multiple modes of
transport. So, while a worm may travel and spread through e-mail, a single blended threat could use multiple routes including e-mail, IRC and file-sharing sharing networks. Lastly, rather than a specific attack on predetermined .exe files, a blended thread could do multiple malicious acts, like modify your exe files, HTML files and registry keys at the same time — basically it can cause damage within several areas of your network at one time. Blended threats are considered to be the worst risk to security since the inception of viruses, as most blended threats also require no human intervention to propagate.
Tips to Combat Viruses, Worms and Trojan Horses on Your Computer Keep The Operating System Updated The first step in protecting your computer from any malicious there is to ensure that your your operating system (OS) is up-to-date. This is essential if you are running a Microsoft Windows OS. Secondly, you need to have anti-virus software installed on your system and ensure you you download updates frequently to ensure your software has the latest fixes for new viruses, worms, and Trojan horses. Additionally, you want to make sure your anti-virus program has the capability to scan e-mail and files as they are downloaded from the Internet, and you also need to run full disk scans periodically. This will help prevent malicious programs from even reaching your computer.
Use a Firewall You should also install a a firewall . A firewall is a system that prevents unauthorized use and access to your computer. A firewall can be either hardware or software. s oftware. Hardware firewalls provide a strong degree of protection from most forms of attack coming from the outside world and can be purchased as a stand -alone product or in broadband routers. Unfortunately, when battling viruses, worms and Trojans, a hardware firewall may be less effective a software as regularthan network traffic.firewall, as it could possibly ignore embedded worms in out going e -mails and see this For individual home users, the most popular firewall choice is a software firewall. A good software firewall will protect your computer from outside attempts to control or gain access your computer, and usually provides additional protection against the most common Trojan programs or e-mail worms. The downside to software firewalls is that they will only protect the computer they are installed on, not a network. It is important to remember that on its own a firewall is not going to rid you of your computer virus problems, but when used in conjunction with regular operating system updates and a good anti-virus scanning software, it will add some extra security and protection for your computer or network. D i d Y o u K n o w . .. .. CodeRed, a blended threat, launched DoS attacks, defaced Web servers, and its variant, CodeRed II, left Trojan horses behind for later execution. CodeRed was processed in i n memory — not on a hard disk — allowing it to slip past some anti-virus anti -virus products. Computer Economics has estimated the worldwide cost of CodeRed at $2.62 billion dollars. [Source: [Source :Symantec Web site]
Key Terms To Understanding Understanding Computer Viruses: Viruses:
virus: A program or piece of code that is loaded onto your computer without your knowledge and runs against
your wishes. Trojan Horse: A destructive program that masquerades as a benign application. Unlike viruses, Trojan horses do not replicate themselves worm: A program or algorithm that replicates itself over a computer network and usually performs malicious actions blended threat: Blended threats combine the characteristics of viruses, worms, Trojan Horses, and malicious code with server and Internet vulnerabilities . antivirus program: A utility that searches a hard disk for viruses and removes any that are found.