Olympiad Test : Internet And Viruses - 2 - Class 7 MCQ

Explanation:
An IP address is a unique numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication. It is used to identify and locate devices on a network.
The range of numbers that an IP address can contain is determined by the version of the Internet Protocol being used. There are two versions of IP: IPv4 and IPv6.
1. IPv4:
- IPv4 addresses are 32-bit numbers.
- They are represented as four sets of decimal numbers separated by periods.
- Each set can have a value from 0 to 255.
- Therefore, the range of numbers that an IPv4 address can contain is 0 to 255 for each set.
- For example, 192.168.0.1 is a valid IPv4 address.
2. IPv6:
- IPv6 addresses are 128-bit numbers.
- They are represented as eight sets of hexadecimal numbers separated by colons.
- Each set can have a value from 0 to FFFF (hexadecimal).
- Therefore, the range of numbers that an IPv6 address can contain is 0 to FFFF for each set.
- For example, 2001:0db8:85a3:0000:0000:8a2e:0370:7334 is a valid IPv6 address.
In conclusion, the correct answer is C: 0 to 255 for IPv4 addresses.

Answer: URL
Explanation:
The address of a webpage on the internet is called a URL (Uniform Resource Locator). It is a unique identifier that specifies the location of a resource on the internet. Here is a breakdown of the different components of a URL:
1. Protocol:
The protocol is the set of rules that determines how data is transmitted over the internet. It is indicated at the beginning of the URL and is typically "http://" or "https://". HTTP (Hypertext Transfer Protocol) is the standard protocol for transmitting web pages, while HTTPS (Hypertext Transfer Protocol Secure) is a secure version of HTTP that uses encryption.
2. Domain:
The domain is the main part of the URL and represents the website or server where the webpage is hosted. It can be identified by the domain name, such as "example.com".
3. Path:
The path is the specific location of a file or page within the website's directory structure. It comes after the domain and is separated by slashes ("/"). For example, "/blog/article.html".
4. Query Parameters:
Query parameters are additional information appended to the URL that can modify the behavior or content of a webpage. They are preceded by a question mark "?" and separated by ampersands "&". For example, "?page=2&sort=asc".
5. Fragment Identifier:
The fragment identifier is used to specify a specific section or element within a webpage. It is preceded by a hash symbol "#" and is typically used for linking to a specific section of a long webpage.
In summary, a URL is the address that uniquely identifies a webpage on the internet. It consists of the protocol, domain, path, query parameters, and fragment identifier.

The correct answer is B: Org.
Explanation:
Non-profit institutional websites are typically identified by the domain name extension "org," which stands for organization. Here's a breakdown of the different domain name extensions and their common uses:
1. A: Gov
- This domain name extension is used for government websites. It is reserved for federal, state, and local government agencies.
2. B: Org
- This domain name extension is commonly used for non-profit organizations, such as charities, foundations, and educational institutions. It signifies that the website is associated with a non-commercial entity.
3. C: Com
- This domain name extension is short for commercial and is used for commercial businesses. It is the most common domain extension and represents for-profit entities.
4. D: Net
- This domain name extension is short for network and was initially intended for network-related websites. However, it can be used by a variety of websites and is not specific to non-profit institutions.
Therefore, the correct answer is B: Org, which is the domain name extension used for non-profit institutional websites.

Advantages of E-mail:
1. Quicker than ordinary postage:
- E-mail allows for almost instant transmission of messages.
- Unlike traditional mail which can take several days or even weeks to reach its destination, e-mails are delivered within seconds or minutes.
2. Flexible message length:
- E-mails can be as short as a few lines of text or as long as several pages.
- There are no limitations on the length of the message, allowing for detailed and comprehensive communication.
3. 24/7 accessibility:
- E-mails can be accessed and received at any time, providing convenience and flexibility.
- Unlike traditional mail, which requires physical presence at a specific location to receive messages, e-mails can be received and read from any location with internet access.
4. Cost-effective:
- Sending an e-mail is significantly cheaper than sending traditional mail.
- There are no costs associated with envelopes, stamps, or paper.
5. Easy to organize and store:
- E-mails can be organized into folders and easily searched for future reference.
- This makes it convenient to retrieve and review important information.
6. Attachments:
- E-mails allow for the attachment of various file types, such as documents, images, and videos.
- This enables the easy sharing of files and information with others.
7. Multiple recipients:
- E-mails can be sent to multiple recipients simultaneously, saving time and effort.
In conclusion, the advantages of e-mail include its speed, flexibility in message length, accessibility, cost-effectiveness, ease of organization, ability to attach files, and the ability to send messages to multiple recipients.

Characters in an email address:
- An email address is a unique identifier that allows individuals to send and receive emails.
- It consists of two main parts: the username and the domain name.
- The username is the part before the "@" symbol, and the domain name is the part after the "@" symbol.
- The username can contain various characters, including letters, numbers, and certain special characters such as dot, underscore, and dash.
- However, the domain name always contains a dot (".") character, which separates the domain name into different sections.
- The domain name typically consists of the domain name itself (e.g., gmail, yahoo) and the top-level domain (e.g., .com, .org, .net).
- The dot character is essential to separate these sections and ensure that the email is sent to the correct domain.
- The "@" symbol is used to separate the username and the domain name, indicating that the email is intended for a specific user at a specific domain.
Answer:
The correct answer is B: @ and dot.

To identify the protocol name in the given URL "http://www.unifiedcouncil.com", we need to understand the structure of a URL. A URL consists of several parts, including the protocol, domain name, and path.
Parts of the URL:
1. Protocol: The protocol specifies the method or protocol used to access the resource on the internet. It is the first part of a URL and is followed by a colon (:) and two forward slashes (//). In this case, the protocol name is "http".
2. Domain Name: The domain name is the unique name that identifies a website on the internet. It usually consists of two parts - the second-level domain (e.g., "unifiedcouncil") and the top-level domain (e.g., "com"). In this case, the domain name is "www.unifiedcouncil.com".
Identifying the Protocol Name:
In the given URL "http://www.unifiedcouncil.com", the protocol name can be identified by looking at the first part of the URL.
- Option A: .com - Incorrect. This represents the top-level domain, not the protocol name.
- Option B: .www - Incorrect. This is not a valid part of the URL and does not represent the protocol name.
- Option C: .http - Correct. This represents the protocol name "http".
- Option D: unified - Incorrect. This represents the second-level domain, not the protocol name.
Therefore, the correct answer is option C: .http.

Why you should not type a message in ALL CAPITAL LETTERS:

When you chat with people or send an e-mail, it is generally considered inappropriate to type a message in ALL CAPITAL LETTERS. Here are the reasons why:

1. It is considered shouting or being rude:

• Typing in all capital letters is equivalent to shouting in online communication.


• It can convey a strong and aggressive tone, which can be perceived as rude or offensive.


• Using capital letters excessively can create a negative impression and lead to misunderstandings or conflicts.

2. It can be difficult to read:

• Text written in all capital letters lacks the natural variation in letter height and shape, making it harder to read.


• It can strain the eyes and make the text appear visually overwhelming or intimidating.


• Using proper capitalization, with the appropriate mix of uppercase and lowercase letters, enhances readability and comprehension.

3. It may not get displayed correctly:

• Some email clients or messaging platforms may not display text in all capital letters.


• It can result in the message being distorted or not appearing as intended.


• To ensure the content is readable and properly displayed, it is advisable to use standard capitalization.

Overall, typing in all capital letters should be avoided in online communication as it can be perceived as shouting, difficult to read, and may not display correctly. Using proper capitalization and considering the tone of your message will help maintain effective and respectful communication.

CC in e-mail stands for Carbon Copy.
Explanation:
- Carbon Copy is a term that originated from the practice of using carbon paper to make copies of documents. In the context of e-mail, it refers to the practice of sending a copy of an e-mail to additional recipients.
- When you add recipients to the CC field in an e-mail, they will receive a copy of the message, along with the primary recipient(s) in the To field.
- The CC function allows you to keep multiple parties informed of the communication without directly addressing them in the To field.
- CC is often used when you want to keep someone in the loop or provide them with information, but they are not the main recipient or the primary person responsible for taking action.
- It is important to note that all recipients in the CC field can see who else has been copied on the e-mail.
- CC can be useful in various scenarios, such as sharing information with colleagues, including supervisors in important conversations, or keeping clients updated on a project.
- It is also worth mentioning that there is another similar term called BCC, which stands for Blind Carbon Copy. When you add recipients to the BCC field, they receive a copy of the e-mail, but their names are not visible to other recipients.
In summary:
- CC in e-mail stands for Carbon Copy.
- It allows you to send a copy of an e-mail to additional recipients.
- Recipients in the CC field can see who else has been copied on the e-mail.
- CC is often used to keep people informed or provide them with information without directly addressing them in the To field.

Answer:
What does BCC stand for?
- BCC stands for "Blind Carbon Copy."
Explanation:
When sending an email, the BCC field allows the sender to include recipients who will receive a copy of the email without other recipients being aware of it. Here is a detailed explanation of what each option stands for:
A: Blank Correct Copy
- This is not the correct answer. There is no such term as "Blank Correct Copy" in the context of email communication.
B: Best Combine Copy
- This is not the correct answer. "Best Combine Copy" is not a term used in email communication.
C: Blank Copy to Copy
- This is not the correct answer. "Blank Copy to Copy" is not a term used in email communication.
D: Blind Carbon Copy
- This is the correct answer. BCC stands for "Blind Carbon Copy." When you add recipients to the BCC field, they will receive a copy of the email, but their email addresses will be hidden from other recipients.
In conclusion, when sending an email, BCC stands for "Blind Carbon Copy," allowing the sender to send a copy of the email to recipients without others knowing who else received the email.

Explanation:
The "@" symbol in the email address "exam@unifiedcouncil.com" is called the "at" symbol. It is used to separate the email recipient's name or alias from the domain name in an email address.
Key Points:
- The "@" symbol is commonly referred to as the "at" symbol.
- It is used to separate the recipient's name or alias from the domain name in an email address.
- The "@" symbol is pronounced as "at" in spoken language.
- The "@" symbol is not related to the rounded "a" or any other symbols mentioned in the options.
- The correct answer is option B: "At the rate of."
Summary:
The "@" symbol in an email address stands for "at the rate of" and is used to separate the recipient's name or alias from the domain name.

Which of the following is not a search engine?
To determine which option is not a search engine, we need to analyze each option and identify if it meets the criteria of a search engine.
A: G-mail
- G-mail is an email service provided by Google and is not a search engine. It is used for sending, receiving, and organizing emails.
B: Yahoo
- Yahoo was once a popular search engine but is now primarily known for its email service, news, and other services. However, it still has a search engine functionality, so it is a search engine.
C: AltaVista
- AltaVista was one of the earliest web search engines but is no longer in operation. Therefore, it is not a search engine.
D: Google
- Google is one of the most widely used search engines and the most popular option for internet searches. It provides relevant search results based on user queries.
Answer: A: G-mail
In conclusion, G-mail is not a search engine. It is an email service provided by Google.

Answer:
The correct e-mail service provider among the given options is www.yahoo.com.
Explanation:
To determine the correct e-mail service provider, let's analyze each option:
1. www.yahoo.com: Yahoo is a well-known internet company that provides a variety of services, including e-mail. Yahoo Mail is a widely used e-mail service provider.
2. www.naukri.com: Naukri.com is a job portal website and does not provide e-mail services.
3. www.irctc.type: The provided URL seems to be incorrect or incomplete. It does not represent a valid e-mail service provider.
4. www.spontine.com: Spontine.com does not appear to be a recognized e-mail service provider. It may be a non-existent or less popular website.
Therefore, the correct e-mail service provider among the given options is www.yahoo.com.

Explanation:
To send an email to another class on the school's local area network, one must first know the email address of the class. The email address serves as the unique identifier for each class and allows the email to be directed to the correct recipient.
Here is a detailed explanation:
E-mail Address:
- The email address is a combination of the recipient's username and the domain name of the school's local area network.
- It typically follows the format of username@domainname.
- The username can be the class name or a specific identifier assigned to the class.
- The domain name is the unique identifier for the school's local area network.
Importance of Knowing the E-mail Address:
- The email address is essential to ensure that the email is delivered to the correct recipient.
- Without knowing the email address, it would not be possible to send an email to the intended class.
- The email address acts as the destination for the email and allows the recipient's email server to route the message correctly.
Alternative Options:
- Knowing the teacher's name or the computer type is not necessary to send an email to another class on the school's local area network.
- The teacher's name is not directly related to the email delivery process.
- The computer type does not affect the sending or receiving of emails within a local area network.
Therefore, the correct answer is option D: E-mail address.

The correct option for creating a new password to ensure privacy and security is to use a combination of words and numbers. Here's why:
1. Pick a password used by another person: This is not recommended as it compromises the security of the account. If someone else has used the same password and it has been compromised, it could potentially be used to gain unauthorized access to your account.
2. Use personal information for the new password: Using personal information such as your name, birthdate, or address as a password is not secure. It is easy for others to guess or obtain this information, making it easier for them to access your account.
3. Pick random letters for the new password: While picking random letters may seem like a good idea, it can be difficult to remember and prone to error. It is important to create a password that is both secure and easy for you to remember.
4. Use a combination of words and numbers for the new password: This is the recommended approach for creating a strong password. By combining random words and numbers, you can create a password that is both secure and memorable. Additionally, using a mix of uppercase and lowercase letters, along with special characters, adds another layer of security.
Remember, it is also important to regularly update your password and not use the same password for multiple accounts. Following these guidelines will help ensure the privacy and security of your e-mail account.

Sign Out
- The correct option to sign out of your e-mail account is Sign out (option B).
- Signing out of your e-mail account is important for security reasons to ensure that no one else can access your account.
- By signing out, you are effectively ending your current session and closing the connection to your e-mail account.
Sign In
- Option A, Sign in, is the opposite action of signing out. It is used to log in or access your e-mail account.
- When you sign in, you are providing your username and password to authenticate and gain access to your e-mail account.
Forward
- Option C, Forward, is not related to signing out of your e-mail account.
- Forwarding an e-mail allows you to send a received e-mail to another recipient.
New
- Option D, New, is also not related to signing out of your e-mail account.
- "New" typically refers to creating a new e-mail message or composing a new e-mail.
In conclusion, the correct option to sign out of your e-mail account is Sign out (option B). Remember to always sign out of your e-mail account when you're finished using it to protect your privacy and prevent unauthorized access.

Answer:
To determine the number of numbers separated by dots in a numeric web address, we can break down the address and count the individual numbers.
Steps:
1. Start by breaking down the web address into its components.
2. Each component is separated by a dot (.), so we need to count the number of components.
3. Count the number of numbers in each component.
Example:
Let's consider the web address "www.example.com" as an example.
- The web address has three components: "www", "example", and "com".
- Each component does not contain any numbers separated by dots.
Therefore, the answer is zero numbers separated by dots in this web address.
Final Answer:
The correct answer is Zero numbers separated by dots.

The purpose of CC (Carbon Copy) in email communication is to allow the sender to send the message to several people at a time. It is a way to include additional recipients who are not the primary recipients of the email but need to be informed or kept in the loop.
Here is a detailed explanation of the purpose of CC:
1. Sending messages to multiple recipients:
- CC allows the sender to include additional recipients in the email. These recipients will receive a copy of the email, and their email addresses will be visible to all other recipients.
- This feature is useful when there is a need to inform multiple people about a particular message or keep them updated on a conversation.
2. Sharing information:
- CC can be used to share information with multiple parties simultaneously. It enables efficient communication by reducing the need for separate emails to each recipient.
- It allows for collaboration and keeps everyone involved in the conversation.
3. Transparency:
- CC provides transparency as all recipients can see who else received the email. This can be helpful in situations where accountability or visibility is required.
4. Keeping everyone informed:
- CC ensures that all relevant parties are aware of the communication. It allows the sender to keep others in the loop without the need for forwarding or separate messages.
5. Efficiency:
- CC saves time and effort by allowing the sender to reach multiple recipients with one email. It eliminates the need for sending individual messages to each person.
In conclusion, the purpose of CC in email communication is to enable the sender to send the message to several people simultaneously, keeping them informed and involved in the conversation. It promotes efficient communication and transparency among multiple recipients.

Explanation:
The .mil domain in a website address stands for a military site. Here is a detailed explanation:
- Domain: A domain is a unique identifier for a website. It is the part of a website address that appears after the "www" and before the top-level domain.
- .mil: The top-level domain .mil is reserved for websites related to the military. It is used exclusively by the United States Department of Defense and its branches, including the Army, Navy, Air Force, Marines, and Coast Guard.
- Government: The military websites with the .mil domain are governmental sites that provide information, resources, and services related to national defense and security.
- Authentication: Websites with the .mil domain undergo strict authentication processes to ensure that only authorized personnel and organizations have access to them. This helps in maintaining the security and integrity of the information provided on these websites.
- Examples: Some examples of websites with the .mil domain include army.mil, navy.mil, and airforce.mil. These websites serve as official platforms for the respective military branches to communicate with their personnel, share news and updates, and provide resources.
In conclusion, the .mil domain in a website address denotes a military site and is used exclusively by the United States Department of Defense and its branches.

Domain Name for Networking Organization Website

• .net: The correct answer is B. The domain name ".net" is commonly used for networking organization websites. It is short for "network" and is often associated with internet service providers, technology companies, and organizations involved in networking and communications.


• .int: The domain name ".int" is used for websites of international organizations established by treaty, such as the United Nations and its specialized agencies.


• .com: The domain name ".com" is a generic top-level domain (gTLD) that is widely used for commercial websites. It is not specific to networking organizations.


• .org: The domain name ".org" is a gTLD that is commonly used for non-profit organizations, charities, and other non-commercial entities. While some networking organizations may use this domain, it is not exclusively for them.

Therefore, the correct domain name for a networking organization website is ".net".

Given:
- An email was sent to Navneet, Shraddha, and Bunny.
- Navneet's email address is navneet@xyz.com.
- Shraddha's email address is shraddha@abc.com.
- Bunny's email address is bunny@abc.com.
- The email was sent with Navneet's email address in the "To" field.
- Shraddha and Bunny were BCCed on the email.
Analysis:
- The BCC field hides the recipients' email addresses from each other.
- Navneet does not know that Shraddha and Bunny were BCCed on the email.
- Shraddha knows that the email was sent to Navneet and Bunny because she received the email in the BCC field.
- Bunny knows that the email was sent to Navneet and Shraddha because he also received the email in the BCC field.
- It is not mentioned whether Navneet, Shraddha, or Bunny know the total number of recipients.
Answer:
The statement that is true is:
A: Navneet does not know that the email was also sent to Shraddha and Bunny.
Explanation:
- Navneet is the sender of the email and has his email address in the "To" field. He does not know that Shraddha and Bunny were BCCed on the email.
- Shraddha and Bunny received the email in the BCC field and are aware of each other's presence in the email.
- The other statements (B, C, and D) cannot be concluded based on the given information.