# Business SySTEMs And Computer Applications Quiz

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Quiz 2, D132 Computer Applications and Business Systems Concepts

• 1.

### The actual data that can be transmitted in a unit of time is called:

• A.

Digital

• B.

Analog

• C.

Throughput

• D.

Signal

C. Throughput
Explanation
Throughput refers to the actual amount of data that can be transmitted or processed in a given unit of time. It represents the efficiency and capacity of a system to handle data transfer. While digital and analog refer to different types of signals, and signal is a generic term for any form of transmitted data, throughput specifically measures the quantity of data that can be transmitted.

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• 2.

### Measured in hertz (Hz), the maximum data transfer capacity of a communications channel is called:

• A.

Bandwidth

• B.

Bigital data

• C.

Multiplexing

• D.

Maximum data transfer (MDT)

A. Bandwidth
Explanation
Bandwidth refers to the maximum data transfer capacity of a communications channel, measured in hertz (Hz). It represents the amount of data that can be transmitted over a network in a given period of time. It is a crucial factor in determining the speed and efficiency of data transmission.

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• 3.

### To send digital data over dial-up phone lines, the data must be transformed into analog form. In other words, it must be:

• A.

Publicly switched

• B.

Modulated

• C.

Encrypted

• D.

Compressed

B. Modulated
Explanation
To send digital data over dial-up phone lines, the data must be transformed into analog form through a process called modulation. Modulation is the technique of encoding the digital data onto an analog carrier signal so that it can be transmitted over the phone lines. This allows the data to be transmitted as varying amplitudes, frequencies, or phases of the carrier signal. Once the analog signal reaches the receiving end, it can be demodulated back into digital form for interpretation. Therefore, modulation is necessary to convert the digital data into a format suitable for transmission over dial-up phone lines.

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• 4.

### The short-range radio transmission technology popular today was named after the 10th-centure Danish Viking Harald Blatand and is called:

• A.

Personal Area Network (PAN)

• B.

Bluetooth

• C.

Infrared

• D.

B. Bluetooth
Explanation
Bluetooth is the correct answer because it is a short-range radio transmission technology that was named after the 10th-century Danish Viking Harald Blatand. The name "Bluetooth" was chosen as a tribute to Blatand, who was known for his ability to unite different tribes, just as Bluetooth technology unites different devices.

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• 5.

### Microwaves are high-frequency, electromagnetic radio waves with very _______________ frequencies.

• A.

long

• B.

Elusive

• C.

Intermittent

• D.

Short

D. Short
Explanation
Microwaves are high-frequency electromagnetic radio waves, which means they have a high number of oscillations per second. Short wavelengths correspond to high frequencies, so microwaves have short wavelengths.

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• 6.

### Microwave relay stations positioned in space are called:

• A.

Rovers

• B.

Orbital sockets

• C.

Earth-based stations

• D.

Satellites

D. Satellites
Explanation
Microwave relay stations positioned in space are called satellites. Satellites are man-made objects that orbit around the Earth and are used for various purposes, including communication, weather monitoring, navigation, and scientific research. These satellites act as relay stations for transmitting microwave signals, allowing for long-distance communication between different locations on Earth. They play a crucial role in modern telecommunications and are essential for global connectivity.

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• 7.

### Usually built into wireless routers, a special communications device which sends and receives data between computers that contain wireless adapters is called a(n):

• A.

Protocol

• B.

Switch

• C.

Network access point

• D.

C. Network access point
Explanation
A network access point is a special communications device that is built into wireless routers. It is responsible for sending and receiving data between computers that have wireless adapters. This device acts as a central hub for wireless communication within a network, allowing devices to connect and exchange data wirelessly.

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• 8.

### The use of all-digital telephone systems is called:

• A.

The public switched telepHone network (PSTN).

• B.

The plain old telepHone services (POTS).

• C.

Digital telepHony.

• D.

A subscriber loop carrier (SLC).

C. Digital telepHony.
Explanation
Digital telephony refers to the use of all-digital telephone systems. It involves the conversion of analog voice signals into digital data that can be transmitted over digital networks. This technology offers improved call quality, increased capacity, and the ability to transmit data and voice simultaneously. The other options mentioned in the question, such as PSTN, POTS, and SLC, are not accurate descriptions of all-digital telephone systems. PSTN refers to the entire network of telephone lines and switches, POTS refers to traditional analog telephone services, and SLC refers to a technology used in telecommunications infrastructure.

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• 9.

### A current issue facing PSTNs is the data bottleneck near consumersâ€™ connection points. This problem is referred to as the:

• A.

Last-mile problem.

• B.

FiOS vulnerability.

• C.

Rotary pHone syndrome.

• D.

Analog-digital bottleneck.

A. Last-mile problem.
Explanation
The correct answer is "last-mile problem". This refers to the issue of data congestion or bottleneck that occurs near the connection points of consumers in the Public Switched Telephone Networks (PSTNs). It is called the last-mile problem because it specifically pertains to the final leg of the telecommunications network that connects the end user to the service provider. This issue can result in slower internet speeds, limited bandwidth, and difficulties in delivering high-speed data services to consumers.

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• 10.

### One precaution you can take to protect yourself while surfing on a public hot spot is to:

• A.

Run only on battery power instead of using publicly-accessible power.

• B.

Make sure the hot spot is public.

• C.

Use firewalls and antivirus software.

• D.

limit the amount of caffeine used while surfing.

C. Use firewalls and antivirus software.
Explanation
Using firewalls and antivirus software is a precautionary measure that can help protect oneself while surfing on a public hot spot. Firewalls act as a barrier between the user's device and potential threats, monitoring and controlling incoming and outgoing network traffic. Antivirus software helps detect and remove malicious software that may be present on the hot spot network. By using these security measures, the chances of unauthorized access, data breaches, and malware infections can be significantly reduced, ensuring a safer browsing experience on public hot spots.

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• 11.

### When individuals interact with multiple devices on an omnipresent network, enabling technology to become virtually embedded and invisible in their lives.

• A.

Internet.

• B.

Ubiquitous computing.

• C.

DARPAnet.

• D.

Divulgency.

B. Ubiquitous computing.
Explanation
The given answer, "Ubiquitous computing," is the most appropriate choice because it aligns with the description provided in the question. Ubiquitous computing refers to the concept of technology seamlessly integrating into people's lives, becoming virtually embedded and invisible. It involves the use of multiple devices connected through a network, such as the internet, to create an environment where technology is omnipresent and easily accessible. This explanation fits well with the idea of individuals interacting with multiple devices on an omnipresent network, as mentioned in the question.

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• 12.

### Privacy advocates believe that individual users should determine when and how personal information is divulged to:

• A.

Users

• B.

Cashiers

• C.

Credit card companies

• D.

Third parties

D. Third parties
Explanation
Privacy advocates believe that individuals should have control over their personal information and decide when and how it is shared. They argue that individuals should have the right to choose who has access to their personal data, and third parties, such as advertisers or data brokers, should not have automatic access to this information without explicit consent. This belief is rooted in the importance of protecting individuals' privacy and preventing the misuse or abuse of personal data by unauthorized parties.

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• Current Version
• Feb 14, 2023
Quiz Edited by
ProProfs Editorial Team
• Feb 28, 2011
Quiz Created by
DanDESCHAINE

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