What is SIM?

A SIM card, also known as a subscriber identity module, is a smart card that stores data for GSM cellular telephone subscribers. Such data includes user identity, location and phone number, network authorization data, personal security keys, contact lists and stored text messages. Security features include authentication and encryption to protect data and prevent eavesdropping. A SIM card and can be switched easily from one phone set to another. The portability of data offers a number of benefits. For example, a user that buys a new phone can install the current SIM card to associate the new phone with the same number and user preferences as the old one. In another common situation, if a phone's battery runs out of power, the user can easily install the card to another subscriber's phone to borrow it without running up that user's minutes. Some vendors offer prepaid SIM cards that can provide travelers with local numbers, as long as their cell phones are not locked to a specific carrier. A device called a SIM card reader can be used to upload data from a SIM card to a computer or other device.

What is an IP address?

An Internet Protocol address (IP address) is a numerical label assigned to each device (e.g., computer, printer) participating in a computer network that uses the Internet Protocol for communication. An IP address serves two principal functions: host or network interface identification and location addressing. Its role has been characterized as follows: "A name indicates what we seek. An address indicates where it is. A route indicates how to get there.

The designers of the Internet Protocol defined an IP address as a 32-bit number and this system, known as Internet Protocol Version 4 (IPv4), is still in use today. However, because of the growth of the Internet and the predicted depletion of available addresses, a new version of IP (IPv6), using 128 bits for the address, was developed in 1995. IPv6 was standardized as RFC 2460 in 1998, and its deployment has been ongoing since the mid-2000s.

IP addresses are usually written and displayed in human-readable notations, such as 172.16.254.1 (IPv4), and 2001:db8:0:1234:0:567:8:1 (IPv6).

The Internet Assigned Numbers Authority (IANA) manages the IP address space allocations globally and delegates five regional Internet registries (RIRs) to allocate IP address blocks to local Internet registries (Internet service providers) and other entities.

What is Science?

Ans 1:

Science is the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.

Ans 2:

Science is the concerted human effort to understand, or to understand better, the history of the natural world and how the natural world works, with observable physical evidence as the basis of that understanding.

Ans 3:

Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence.

Ans 4:

Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe.

What is HIV?

Ans 1:

HIV is a virus spread through body fluids that affects specific cells of the immune system, called CD4 cells, or T cells. Over time, HIV can destroy so many of these cells that the body can’t fight off infections and disease. When this happens, HIV infection leads to AIDS. Learn more about the stages of HIV and how to tell whether you’re infected.

Ans 2:

“HIV” stands for Human Immunodeficiency Virus. To understand what that means, let’s break it down:

H         -          Human – This particular virus can only infect human beings.

I           -          Immunodeficiency – HIV weakens your immune system by destroying important cells that fight disease and infection. A "deficient" immune system can't protect you.

V         -           Virus – A virus can only reproduce itself by taking over a cell in the body of its host.

What is a computer virus?

Ans 1:
A computer virus is a malware program that, when executed, replicates by inserting copies of itself (possibly modified) into othercomputer programs, data files, or the boot sector of the hard drive; when this replication succeeds, the affected areas are then said to be "infected".  Viruses often perform some type of harmful activity on infected hosts, such as stealing hard disk space or CPU time, accessing private information, corrupting data, displaying political or humorous messages on the user's screen, spamming their contacts,logging their keystrokes, or even rendering the computer useless. However, not all viruses carry a destructive payload or attempt to hide themselves—the defining characteristic of viruses is that they are self-replicating computer programs which install themselves without user consent.

Ans 2:
A computer virus or worm is a self-replicating program that can spread by email or by inserting copies of itself into other programs or documents. Most viruses or worms aremalicious programs designed to infect and gain control over a computer without the owner’s knowledge.

What is a virus?

Ans 1:

A virus is a microscopic organism that can replicate only inside the cells of a host organism. Most viruses are so tiny they are only observable with at least a conventional optical microscope. Viruses infect all types of organisms, including animals and plants, as well as bacteria and archaea. Approximately 5000 different viruses have been described in detail at the current time, although it is known that there are millions of distinct types.  Viruses are found in virtually every ecosystem on Earth, and these minute life forms are thought to be the most abundant type of biological entity.  The study of viruses is known as virology, a specialty within the field of  microbiology.

Ans 2:

An infective agent that typically consists of a nucleic acid molecule in a protein coat, is too small to be seen by light microscopy, and is able to multiply only within the living cells of a host.

Ans 3:

A piece of code which is capable of copying itself and typically has a detrimental effect, such as corrupting the system or destroying data.

Ans 4:

Viruses are tiny organisms that may lead to mild to severe illnesses in humans, animals and plants. This may include flu or a cold to something more life threatening like HIV/AIDS.

What is PriceMinus?

PriceMinus is advertised as a program that displays coupons for sites you are visiting and competitive prices when you are viewing product pages at sites like Amazon. Though this may sound like a useful service, the PriceMinus program can be intrusive and will display ads whether you want them to or not.
When installed, the PriceMinus browser extension will display advertising banners, pop-up advertisements and in-text ads, stating that they are brought to you by “PriceMinus”. The PriceMinus Ads will have different text under the pop-up: “Powered by PriceMinus”, “Brought to you by PriceMinus”, “You’ve received a premium offer from PriceMinus” or “Ads by PriceMinus”.

These ads are aimed to promote the installation of additional questionable content including web browser toolbars, optimization utilities and other products, all so the PriceMinus publisher can generate pay-per-click revenue.
When infected with PriceMinus the common symptoms include:

• Advertising banners are injected with the web pages that you are visiting.
• Random web page text is turned into hyperlinks.
• Browser popups appear which recommend fake updates or other software.
• Other unwanted adware programs might get installed without the user’s knowledge.