Olympiad Test : Latest Developments In IT - 1 - Class 7 MCQ

Dorkbot
Dorkbot is a type of malware and computer worm that has caused significant damage to computer systems worldwide. It is known for its ability to spread through various channels and infect a large number of devices. Below are the defining characteristics of Dorkbot:
A family of malware worms:
- Dorkbot belongs to a family of malware worms that are designed to infiltrate computer systems and carry out malicious activities.
- It is capable of infecting both Windows and Linux operating systems.
Spreads through instant messaging and USB removable drives:
- Dorkbot is commonly spread through instant messaging platforms such as Skype, Facebook Messenger, and IRC.
- It can also propagate through USB removable drives, exploiting vulnerabilities in the Autorun feature.
Spreads through social media channels:
- Dorkbot has been known to spread through social media channels like Facebook and Twitter.
- It often disguises itself as a link or attachment, tricking users into clicking on malicious content.
All of these:
- All the statements mentioned above define Dorkbot accurately.
- Dorkbot is a family of malware worms that spreads through instant messaging, USB drives, and social media channels.
In conclusion, Dorkbot is a dangerous malware worm that can cause significant harm to computer systems. It is important to stay vigilant and take necessary precautions to protect against such threats.

Botnet

• Definition: A botnet is a network of infected computers or devices that are controlled by a malicious actor, known as a botmaster, to carry out various malicious activities without the knowledge or consent of the device owners.


• Type and Functionality: Botnets can have different types and functionalities, but the answer option B is the correct one.


• Type B: This type of botnet is created by a Trojan and runs on an Internet Relay Chat (IRC) network. It can carry out various tasks, including spreading malware, launching distributed denial-of-service (DDoS) attacks, stealing sensitive information, sending spam emails, and conducting other illicit activities.


• IRC Network: The botnet connects to an IRC network, which serves as a command and control (C&C) infrastructure for the botmaster to remotely control the infected devices.

In summary, a botnet is a network of compromised computers or devices controlled by a botmaster through an IRC network. It is used for various malicious activities, and option B correctly describes this type of botnet.

Barcrafts are centred on the video game Starcraft II.
Explanation:
Barcrafts are events that take place in bars or pubs where fans of a specific video game come together to watch live tournaments and competitions. The term "Barcraft" originated from the game Starcraft II, which is a real-time strategy game developed by Blizzard Entertainment.
Here is a detailed explanation of the options:
A: Minecraft
- Minecraft is a sandbox video game where players can build and explore virtual worlds.
- While Minecraft has a large fanbase and also hosts events, it is not the game that Barcrafts are centred on.
B: World of Warcraft
- World of Warcraft is a massively multiplayer online role-playing game (MMORPG) developed by Blizzard Entertainment.
- While World of Warcraft has a dedicated fanbase, Barcrafts are not centred around this game.
C: Warcraft III
- Warcraft III is a real-time strategy game developed by Blizzard Entertainment.
- While Warcraft III is a predecessor to Starcraft II and also has a dedicated fanbase, Barcrafts are not centred around this game either.
D: Starcraft II
- Starcraft II is a real-time strategy game developed by Blizzard Entertainment.
- Barcrafts are specifically centred around Starcraft II, as it is a highly competitive game with a dedicated esports scene.
In conclusion, Barcrafts are centred on the video game Starcraft II, and fans of the game gather in bars or pubs to watch live tournaments and competitions.

The most widespread botnet in history is Zeus.
Explanation:
Zeus is a notorious botnet that has been active since 2007. It is one of the most sophisticated and widespread botnets in history, infecting millions of computers worldwide. Here is a detailed explanation of why Zeus is the most widespread botnet:
1. Origin and Spread:
Zeus was initially discovered in 2007 and quickly gained popularity among cybercriminals due to its advanced features and capabilities. It spread through various infection vectors, including drive-by downloads, phishing emails, and social engineering techniques.
2. Functionality:
Zeus is primarily designed for financial fraud and theft. It is capable of stealing sensitive information such as banking credentials, credit card details, and personal data. The stolen information is then used for various illicit activities, including unauthorized transactions and identity theft.
3. Evolution and Variants:
Over the years, Zeus has evolved and given rise to numerous variants and spin-offs. These variants include Gameover Zeus, Citadel, and Zeus Sphinx, each with its own modifications and enhancements. The continuous development and adaptation of Zeus have contributed to its widespread presence.
4. Global Impact:
Zeus has infected millions of computers worldwide, impacting individuals, businesses, and even government organizations. It has been responsible for significant financial losses and has disrupted various industries, including banking, e-commerce, and healthcare.
5. Command and Control Infrastructure:
Zeus operates through a decentralized command and control (C&C) infrastructure, making it difficult to take down. The botnet relies on a network of compromised servers and domains to receive commands and control the infected devices.
6. Collaboration with Other Malware:
Zeus has often been found in collaboration with other malware, such as ransomware. This collaboration enhances the capabilities and reach of both malware types, further contributing to the widespread impact of Zeus.
In conclusion, Zeus is the most widespread botnet in history due to its longevity, advanced functionality, global impact, and collaborations with other malware. It has remained a significant threat to cybersecurity for over a decade, infecting millions of computers worldwide and causing substantial financial losses.

What is an Instagram?

Instagram is a social media platform that allows users to share photos and videos with their followers. It was launched in 2010 and has gained immense popularity since then. Here are the key features of Instagram:

1. Android App for Storing Photos and Videos:

• Instagram is primarily an Android app that can be downloaded and installed on smartphones and tablets running on the Android operating system.


• Users can use Instagram to store and organize their photos and videos in their personal accounts, creating a visual diary of their experiences.

2. Built-in Filter Effects:

• Instagram provides various built-in filter effects that users can apply to their photos and videos to enhance their appearance.


• These filters can change the color, tone, and overall look of the media, giving it a unique and artistic touch.


• Users can experiment with different filters to find the perfect one that matches their desired aesthetic.

3. Instant Sharing on Multiple Platforms:

• Instagram allows instant sharing of photos and videos on other social media platforms such as Facebook, Twitter, Flickr, and Tumblr.


• Users can connect their Instagram accounts to these platforms and seamlessly share their content with their followers on multiple platforms simultaneously.


• This feature enhances the reach and visibility of the shared media, making it accessible to a wider audience.

In summary, Instagram is a versatile social media platform that enables users to store, enhance, and share their photos and videos. With its Android app, built-in filter effects, and instant sharing capabilities, Instagram has become a popular choice for visual storytelling and social interaction.

Latest Release of Samsung's Galaxy Smart Phone
Introduction:
The latest release of Samsung's popular Galaxy smartphone, unveiled in February 2014, is the Samsung Galaxy S5.
Details:
- Samsung Galaxy Tab: The Samsung Galaxy Tab is a tablet, not a smartphone, so it is not the latest release.
- Samsung Galaxy S4: The Samsung Galaxy S4 was released in April 2013, before the February 2014 release of the latest Galaxy smartphone.
- Samsung Galaxy S6: The Samsung Galaxy S6 was released in April 2015, after the February 2014 release of the latest Galaxy smartphone.
- Samsung Galaxy S5: The Samsung Galaxy S5 was released in February 2014, making it the latest release of Samsung's popular Galaxy smartphone at that time.
Conclusion:
The latest release of Samsung's popular Galaxy smartphone, unveiled in February 2014, is the Samsung Galaxy S5.

The correct answer is C: HP Envy x2 Hybrid PC.
The HP Envy x2 Hybrid PC is an 11.6-inch Windows 8 notebook with a lid that pops off to become a standalone tablet. Here are the reasons why this is the correct answer:
- Size: The HP Envy x2 is specifically mentioned as an 11.6-inch notebook, which matches the given description.
- Operating System: It runs on Windows 8, as stated in the question.
- Convertible Design: The key feature of the HP Envy x2 is its hybrid design, where the lid can be detached to transform it into a standalone tablet. This matches the description of the notebook with a lid that pops off.
- Brand: The question does not specifically mention the brand, but the options provided include different HP models. Since the correct answer is an HP notebook, the HP Envy x2 Hybrid PC is the only option that matches.
To summarize, the HP Envy x2 Hybrid PC is the correct answer because it is an 11.6-inch Windows 8 notebook with a detachable lid that allows it to function as a standalone tablet.

The name of the feature in Mac OS X that displays a tray of icons is the Dock.
The Dock is a prominent feature in Mac OS X that allows users to quickly access and launch their favorite applications and files. It is located at the bottom of the screen by default but can be moved to other sides as per the user's preference. The Dock provides a visual representation of the applications that are currently running and those that have been pinned for easy access.
Key features of the Dock include:
1. Application icons: The Dock displays icons for frequently used applications, making it easy for users to launch them with a single click.
2. Running applications: When an application is open, its icon appears in the Dock with a small dot underneath to indicate that it is running.
3. Minimized windows: If an application has multiple windows open, minimizing a window will shrink it into the Dock for easy retrieval later.
4. File shortcuts: Users can also add file and folder shortcuts to the Dock for quick access.
5. Stacks: The Dock includes a feature called Stacks, which allows users to organize files and folders in a grid or fan view for easy access.
6. System preferences: The Dock also provides quick access to system preferences, such as network settings, volume control, and display options.
The Dock is a versatile and customizable feature in Mac OS X that helps users streamline their workflow and access their favorite applications and files with ease.

The latest touch series of notebooks from ASUS are called Vivo Book.
Explanation:
- ASUS is a well-known technology company that manufactures a wide range of products, including notebooks.
- The latest series of notebooks from ASUS that feature touchscreens are called Vivo Book.
- The Vivo Book series is designed to provide a balance between performance, portability, and affordability.
- These notebooks come with various features and specifications, catering to different needs and preferences of users.
- The Vivo Book series offers a sleek and modern design, lightweight construction, and a responsive touchscreen for enhanced usability.
- These notebooks are equipped with powerful processors, ample storage options, and high-quality displays for an immersive computing experience.
- ASUS Vivo Book notebooks are suitable for both personal and professional use, providing versatility and convenience.
- Users can enjoy the benefits of touch functionality, allowing them to interact with their devices in a more intuitive and engaging way.
- The Vivo Book series offers a range of models with different screen sizes, configurations, and price points, ensuring that there is a notebook to suit every user's requirements.
- Overall, ASUS Vivo Book notebooks are a popular choice for individuals seeking a reliable and feature-rich device that combines performance and touch functionality.

Which of the following is NOT present in iPhone 5?

A: Multitouch

B: Edge

C: iOS6

D: Radio

Answer: D - Radio

The iPhone 5 does not have a built-in radio feature.

Explanation:

The iPhone 5, released in 2012, was a revolutionary smartphone with several advanced features. Let's go through each option to determine which one is not present in the iPhone 5:

• Multitouch: The iPhone 5 does have a multitouch display, allowing users to interact with the screen using multiple fingers simultaneously. This feature enables gestures like pinch-to-zoom and swiping.


• Edge: The iPhone 5 supports 2G and 3G networks, including EDGE (Enhanced Data rates for GSM Evolution). EDGE is a slower data connection technology, but the iPhone 5 does support it.


• iOS6: The iPhone 5 originally shipped with iOS 6, which was the latest operating system at that time. However, it is important to note that the iPhone 5 is compatible with later iOS versions and can be upgraded to newer releases.


• Radio: Unlike some other smartphones, the iPhone 5 does not have a built-in FM or AM radio receiver. Therefore, users cannot listen to radio stations directly on the device without using internet radio apps or streaming services.

In conclusion, the feature that is not present in the iPhone 5 is the built-in radio functionality.

The correct answer is (D) (i), (ii), and (iii). Let's break down the features mentioned in the list and determine which ones are true:
iCloud Keychain Sync: This feature is true and available in OSX Mavericks. It allows users to securely store and sync their passwords, credit card information, and other sensitive data across multiple devices.
Added new iBook application: This feature is also true. OSX Mavericks introduced the iBooks application, which allows users to read and manage their eBooks on their Mac computers.
App Nap: This feature is true and available in OSX Mavericks. App Nap intelligently conserves power by slowing down or pausing background processes for applications that are not currently in use, helping to extend battery life on portable devices.
SMB 4 as the default protocol for sharing files: This feature is not true. In OSX Mavericks, the default protocol for sharing files is SMB 2, not SMB 4. SMB 2 is a newer version of the Server Message Block (SMB) protocol that offers improved performance and security over SMB 1.
To summarize, the true features of OSX Mavericks mentioned in the given list are iCloud Keychain Sync, the addition of the iBook application, and the introduction of the App Nap feature. The claim that SMB 4 is the default protocol for sharing files is not true.

What is Pinterest?
Pinterest is a popular online platform that allows users to discover, save, and share visual content such as images and videos. It is often described as a pinboard-style website or a virtual bulletin board where users can create and manage theme-based collections of images called "pinboards." Here is a detailed explanation of what Pinterest is and how it works:
1. Pinboard-Style:
- Pinterest operates on a pinboard-style layout, resembling a digital corkboard where users can organize and display various visual content.
- Users can create multiple pinboards based on different themes or interests, such as fashion, home decor, recipes, travel, and more.
- Each pinboard acts as a collection of images or videos related to a specific topic.
2. Photo Sharing:
- Pinterest primarily focuses on photo sharing, allowing users to upload and share images from their own devices or from the internet.
- Users can also save and organize images found on Pinterest or other websites by "pinning" them to their pinboards.
- It serves as a visual bookmarking tool where users can curate content they find interesting or inspiring.
3. Theme-Based Collections:
- Pinterest enables users to create and manage theme-based image collections known as pinboards.
- These pinboards help users categorize and group images based on their interests or specific topics.
- Users can add, remove, or rearrange pins within their pinboards to create a personalized collection.
4. Discovering and Saving Content:
- Users can explore content on Pinterest by searching for specific keywords, browsing categories, or following other users with similar interests.
- When users find content they want to save or revisit later, they can "pin" it to one of their pinboards.
- Each pin includes an image, a brief description, and a link to the original source if available.
5. Social Aspect:
- Pinterest has a social aspect that allows users to interact with each other's content.
- Users can follow other users or specific pinboards to see their latest pins and updates in their home feed.
- They can also like, comment on, and share pins with their followers or other social media platforms.
In summary, Pinterest is a pinboard-style photo sharing website that enables users to create, organize, and discover theme-based collections of images. It serves as a visual bookmarking tool and a platform for users to explore and share inspiring content with others.

Video Glasses:
Video glasses are a form of wearable technology that allows users to view videos and other multimedia content in a more immersive and personal way. They are designed to be worn on the head, providing a private viewing experience without the need for a large screen or external display. Video glasses are also known by other names, such as head-mounted displays (HMDs) and personal media viewers.
Head-Mounted Display (HMD):
A head-mounted display is a type of video glasses that is worn on the head like a pair of eyeglasses or a helmet. It typically consists of a display unit, lenses, and sometimes additional components like headphones or motion sensors. HMDs can be used for various applications, including gaming, virtual reality (VR), augmented reality (AR), and watching videos.
Personal Media Viewers:
Personal media viewers are another term used to describe video glasses. They are designed for personal entertainment and media consumption, allowing users to watch movies, TV shows, and other content in a private and immersive manner. Personal media viewers often come with features like adjustable displays, built-in speakers, and compatibility with various multimedia formats.
Google Glass:
Google Glass is a specific product developed by Google that incorporates video glasses technology. It is a wearable smart device that includes a small display mounted on a pair of eyeglasses. Google Glass can display information such as notifications, maps, and videos directly in the user's field of vision. However, it is important to note that Google Glass is a specific product, and the term "Google Goggles" is not commonly used to refer to video glasses in general.
In conclusion, video glasses are also known as head-mounted displays (HMDs) and personal media viewers. While Google Glass is a notable example of video glasses, it is not a term commonly used to refer to video glasses in general.

The correct answer is A: Stereopsis.
Explanation:
Stereopsis is the brain's ability to perceive depth and form a single 3-D image from two separate images received from each eye. Here's a detailed explanation of each option:
1. Stereopsis:
- Stereopsis refers to the brain's ability to merge the slightly different images received from each eye into one 3-D image.
- It relies on the slight disparity or difference in perspective between the images seen by each eye.
- By combining these slightly different perspectives, the brain can perceive depth and distance.
2. Binocular fusion:
- Binocular fusion refers to the process of combining the images received from each eye into a single, unified image.
- It involves aligning and merging the two images to create a coherent visual perception.
- Binocular fusion is a crucial step in creating a 3-D image.
3. Binocular disparity:
- Binocular disparity refers to the difference in the position of corresponding points in the two images received by each eye.
- It is the primary cue that the brain uses to perceive depth and create a 3-D image.
- The brain compares the disparity between the images to estimate how far objects are in relation to each other.
4. Strabismus:
- Strabismus is a condition characterized by the misalignment of the eyes, often resulting in one eye looking in a different direction than the other.
- This condition can affect stereopsis as the eyes may not be able to provide consistent and accurate information for the brain to merge into a 3-D image.
In summary, stereopsis is the term used to describe the brain's ability to put separate images together to form one 3-D image. Binocular fusion and binocular disparity are related concepts involved in the process, while strabismus can impair the ability to perceive depth and form a 3-D image.

Identification of the Online Social Networking Service:
Key Points:
- Online social networking service and microblogging service
- Users can send and read text-based messages called tweets
- Created by Jack Dorsey in March 2006
Explanation:
- Twitter is the correct identification based on the given information.
- Twitter is an online social networking service that allows users to interact with each other through short messages called tweets.
- Users can send and read text-based messages of up to 140 characters on the platform.
- Twitter was created by Jack Dorsey in March 2006, making it one of the early social media platforms.
Other Options:
- Facebook is a popular social networking service, but it does not primarily focus on microblogging or limited character messages like Twitter.
- LinkedIn is a professional networking platform, which does not match the given description of an online social networking service and microblogging service.
- Yahoo is an internet services company known for its search engine and email services, but it is not specifically an online social networking service or microblogging service.
Therefore, the correct identification is Twitter (Option B).