Search Previous Year Questions

The correct answer is Short Message Service.

Key Points 

• Short Message Service
• It is a text messaging service component of most telephone, internet, and mobile device systems.
• It uses standardized communication protocols that let mobile devices exchange short text messages.
• SMS, as used on modern devices, originated from radio telegraphy in radio memo pagers that used standardized phone protocols.
• The service allows users to send and receive messages of up to 160 characters.
• SMS was the most widely used data application, with an estimated 3.5 billion active users, or about 80% of all mobile phone subscribers.​​
• The SMS concept was first developed by Friedhelm Hillebrand in 1984 in Franco-German GSM cooperation

The correct answer is Ctrl + E.

Key Points

• Aligning text using keyboard shortcuts:

• To use keyboard shortcuts to align text in a placeholder or text box, select the text and then press the following keys:

• Ctrl + E to center text.

• Ctrl + L to left align text.

• Ctrl + R to right align text.

• Ctrl + J to align, or distribute

Electronic mail, or email, is the transmission of text-based messages among networked computers. Email is one of the earliest and most basic messaging resources on the Internet and in many ways it still acts as the lowest common denominator for computer communications. 

Types of email services:

• Free Web-based Email Services: These are the commonly used email accounts accessible through a web browser (such as Internet Explorer, Firefox, etc.). They generally use HTTP Protocol for accessing mail. Example: Yahoo Mail, Hotmail, and Gmail (whose attachment size limit is 25 MB) offer free web-based email services.
• Priced Web-based Email Services: There are also priced web-based email service providers. Many of the free web-based email service providers such as Yahoo! And Hotmail do offer premium account on payment basis.
• Private Email Services: Most of the institutions/organisations have their own dedicated mail server and offer mail account for free to their staff and other members of the institution. These accounts exist only till one is member of that institution. For example: abc@ugc.ac.in; abc@satyam.net etc.

Hence, we conclude that email attachment size limit in Gmail is 25 MB.

The correct answer is Worms.

• A computer worm is a standalone malware computer program that replicates itself in order to spread to other computers.
• Often, it uses a computer network to spread itself, relying on security failures on the target computer to access it.
• Unlike a computer virus, it does not need to attach itself to an existing program.
• Worms almost always cause at least some harm to the network, even if only by consuming bandwidth, whereas viruses almost always corrupt or modify files on a targeted computer.

The correct answer is All of the Above.

Key Points Transportation:

• Computers play a vital role in various aspects of transportation systems.
• They are used for traffic management, route planning, scheduling, ticketing and reservations, fleet management, logistics optimization, and vehicle tracking.
• In addition, computer-based systems are employed in aviation for flight control, navigation, weather forecasting, and air traffic management.

Communication:

• Computers are at the core of modern communication systems.
• They enable email, instant messaging, video conferencing, and voice over IP (VoIP) services.
• Computers are also used in networking infrastructure, data transmission, wireless communication, and the internet. Moreover, they facilitate the development and maintenance of communication networks and systems.

Simulation:

• Computers are extensively used for simulation purposes in various fields.
• In transportation, computer simulations help in designing and optimizing traffic flow, analyzing road networks, and studying the impact of different variables on transportation systems.
• Simulation software is also utilized in aviation and maritime industries for training pilots and ship crews, as well as in virtual environments for driver training and simulation-based assessments.

The correct answer is Web Crawler.

Key Points

• Web search engines store information about many web pages through a process called web crawling or web indexing.
• Web search engines employ automated software programs called web crawlers or spiders to systematically browse the internet and discover web pages.
• These crawlers start with a set of seed URLs and follow links from one page to another, effectively traversing the interconnected web.
• As the web crawlers visit web pages, they analyze the content and metadata of each page, including the text, images, URLs, and other relevant information.

The correct answer is Impact printer

Key Points

• Dot-matrix printer  is a type of computer printing in which ink is applied to a surface and a low-resolution dot matrix is used for layout.
• It is also called an Impact printer.
• Dot-matrix printers employ a print head that goes back and forth or up and down on the page and prints by impact, striking an ink-soaked cloth ribbon on the paper, similar to a typewriter or line printer's print mechanism.
• Not only can a dot matrix printer create any patterns, but it can also print specified characters.
• Impact printer printers are noisy yet popular.
• There is no direct contact between the ink ribbon and the paper with non-impact printers.

The correct answer is 4G memory locations.

Key Points 

• CPU with a 32-bit program counter can address approximately 4 gigabytes (GB) of memory locations.
• The number of memory locations that can be addressed by a CPU is determined by the width of the address bus. In this case, a CPU with a 32-bit program counter can address 2^32 (2 raised to the power of 32) memory locations.
• Each memory location typically represents 1 byte of data. So, with a 32-bit program counter, the CPU can address a total of 4,294,967,296 (2^32) memory locations, which is equivalent to 4 gigabytes of addressable memory (assuming each memory location represents 1 byte).
• It's important to note that the actual amount of memory that can be used by a system may be less than 4GB due to various factors, including system architecture, operating system limitations, and reserved memory for hardware or system purposes.

The correct answer is Mac OS.

Key Points

• Open-source software refers to software whose source code is freely available, allowing users to view, modify, and distribute the code.
• Open-source projects typically encourage collaboration and community involvement in the development process.
• Examples of open-source operating systems include Linux distributions like Ubuntu, Fedora, and Debian. MacOS, on the other hand, is a proprietary operating system developed by Apple.
• The source code for macOS is not freely available to the public, and Apple retains control over its development and distribution.
• While Apple does provide some open-source components and frameworks within macOS, the operating system as a whole is not open source.

The correct answer is 1995.

Key Points

• DVD (Digital Versatile Disc) was invented and developed in the 1995.
• The development of the DVD format can be attributed to collaboration between several technology companies.
• The initial work on the DVD format began in 1993, and it was officially announced in 1995.
• The DVD format quickly gained popularity and became the standard for home entertainment, replacing VHS tapes as the primary medium for movies and other video content.