Virus: Vital Information Resource under Seize. Virus is an executable program depends on the nature of the virus , it may cause damage of your hard disk contents and interfere normal operation of  your computer. It is loaded onto your computer without your knowledge and run against your wished. Viruses can also replicate themselves.

It's a combination of software and hardware Which are embedded by Kiel compiler to perform desired task.

alternate answer:
Embedded systems refer to devices, instruments or large engineering structures/systems that are built to handle one or a few pre-established tasks. The computer controlling the whole thing is built into or 'embedded' within the device.

Librarians spend a significant portion of time at their desks or in front of computer terminals; extended work at video display terminals . Assisting users in obtaining information or books for their jobs, homework, or recreational reading ,  working with users under deadlines. Some librarians lift and carry books, and some have to climb ladders to reach high stacks, although most modern libraries have readily accessible stacks. Librarians in small organizations sometimes shelve books themselves.

well,i have my knowledge in ms excel,trouble shooting,data base ,powerpoint presentation,i know it all.im genius..hehhehehe

Proficiency in basic word processing software and internet is needed in a call center job as call centers generally use computers and the internet to reach the clients. It's time to toot your horn. If you are proficient in MS Office, then say it. If you took a diploma course in Computer Srudies, by all means, tell them.I have very good internet research skills.

Firewalls can't protect very well against things like viruses or malicious software (malware). There are too many ways of encoding binary files for transfer over networks, and too many different architectures and viruses to try to search for them all. In other words, a firewall cannot replace security-consciousness on the part of your users. In general, a firewall cannot protect against a data-driven attack--attacks in which something is mailed or copied to an internal host where it is then executed.

Alternate Answer:
Properly configured firewalls can limit the propagation of worms - a form of malware.  Typically, firewalls are edge or parameter devices (separates network zones) and most viruses and malware targets end points (user workstations and servers).