Computer Science Test 5 Nddc Scholarship
Computer Science Test 5 Nddc Scholarship
Question 31
A company that provides a connection to its server via a communication line, which then allows you to access the global internet, is called an:
An Internet Service Provider (ISP) is an organization that provides the infrastructure and services necessary for users to access the internet. They act as the middleman between your home or office network and the vast global network of servers.
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Question 32
Which device connects a personal computer to a cable-TV system to provide an internet connection?
A cable modem is a peripheral device used to connect a computer to a local cable TV line (coaxial cable). It works by translating the radio frequency signals used for television data into digital data that the computer can understand, allowing for high-speed 'broadband' internet access.
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Question 33
Telecommunications is widely used primarily because it allows:
The fundamental purpose of telecommunications is to overcome geographical barriers. By using electronic signals—via wires, fiber optics, or radio waves—information that would otherwise take days to travel physically can be transmitted globally in milliseconds, facilitating real-time collaboration and global connectivity.
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Question 34
An organization's internal private network that utilizes the same infrastructure and standards as the Internet and the World Wide Web is called an:
An Intranet is a restricted network that functions like a 'private internet' for an organization. It uses standard web technologies (like HTTP and HTML) to share internal news, documents, and tools among employees while remaining inaccessible to the general public, typically protected by a firewall.
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Question 35
Which type of network is most likely to be installed within a single room or a small office building?
A Local Area Network (LAN) is designed to connect computers and devices within a limited geographical area, such as a home, school, or small office. LANs provide high data-transfer speeds and allow users to share resources like printers, files, and internet connections efficiently within that local space.
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Question 36
When seeking news information, what is a primary advantage of using telecommunications over reading a traditional daily newspaper?
Traditional newspapers have a 'lead time'—the time between writing, printing, and delivery—meaning the news is often several hours old by the time you read it. Telecommunications allows for 'breaking news' updates that are published and received instantly as events unfold, providing much more current information.
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Question 37
Which of the following is considered a significant disadvantage when implementing telecommunications systems?
While the long-term benefits are vast, the initial phase of telecommunications can be a hurdle. Establishing the necessary infrastructure—such as laying cables, purchasing high-end servers, acquiring specialized hardware (routers/switches), and paying for service subscriptions—requires a substantial upfront financial investment.
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Question 38
A system on a network that serves as a public space where messages can be posted for all users to see is known as a:
A Bulletin Board System (BBS) was a precursor to modern social media and forums. It allowed users to connect to a central system to upload and download software, read news, and exchange messages with other users on public boards, effectively creating a digital community gathering place.
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Question 39
10BaseT Ethernet (standard twisted-pair cabling) utilizes which type of physical topology?
10BaseT networks use a Star topology where each device is connected via its own cable to a central hub or switch. Although it may function logically like a bus (depending on the hardware), the physical layout is a star, which is advantageous because a single cable failure does not crash the entire network.
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Question 40
In order to communicate on the Internet, every host or device must be assigned a unique:
An IP (Internet Protocol) address is a unique numerical label that identifies a device on the network. Just like a house needs a unique mailing address to receive letters, a computer needs a unique IP address so that data packets sent across the global network reach the correct destination.
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