What is the correct term used for a set of wires used to connect different internal components of the computer system for the purpose of transferring data as well as addresses amongst them?
- A.Hub
- B.Port
- C.Router
- D.Bus
Correct answer
Explanation
The correct answer is D, Bus. A bus is the shared set of electrical lines on the motherboard that carries data, addresses and control signals between the CPU, memory and input-output devices.
A computer's system bus has three parts. The data bus carries the actual data and is two-way. The address bus carries the memory location the CPU wants to read or write and is one-way, from the CPU outward; its width decides how much memory can be addressed. The control bus carries signals such as read, write and clock. The width of a bus, such as 32-bit or 64-bit, decides how much can move at once.
A is wrong because a hub is a networking device that links several computers in a local area network and repeats data to all of them. B is wrong because a port is a socket, such as USB or HDMI, for plugging in an external device. C is wrong because a router forwards data packets between different networks, for example a home network and the internet.
Exam tip: system bus = data bus (two-way) + address bus (one-way) + control bus.
Practice Questions
View allWhich among the following are the purposes of deploying a Firewall ? 1. Examine each packet arriving from Internet 2. Prevent unauthorised access 3. Block suspicious activity 4. Interconnect telephones Select the answer using the code given below :
- A.1 and 2 only
- B.1, 3 and 4
- C.2 and 3 only
- D.1, 2 and 3
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A firewall inspects incoming traffic, keeps out unauthorised users and blocks suspicious activity, but it has nothing to do with connecting telephones.
Read the full explanation →Which one of the following is not a logical operator?
- A.NOT
- B.OR
- C.AND
- D.Division
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Division is an arithmetic operator that works on numbers, while logical operators work on true and false values. Logical (Boolean) operators take one or more conditions that are either true (1) or false (0) and return a true or false result.
Read the full explanation →What are the uses of software ports ? 1. Connect client computer to server 2. Connect external devices to computer 3. Identify different services like email, file transfer 4. Connecting peripherals like cameras, scanners Select the answer using the code given below :
- A.1 and 2
- B.1 and 3
- C.2 and 3
- D.2 and 4
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A software port is a logical number, not a physical socket, so it is used for network connections and for telling services apart.
Read the full explanation →With reference to communication technologies, what is/are the difference/differences between LTE (Long-Term Evolution) and VoLTE (Voice over Long-Term Evolution)? 1. LTE is commonly marketed as 3G and VoLTE is commonly marketed as advanced 3G. 2. LTE is data-only technology and VoLTE is voice-only technology. Select the correct answer using the code given below.
- A.1 only
- B.2 only
- C.Both 1 and 2
- D.Neither 1 nor 2
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Neither statement describes the real difference between the two. LTE is a fourth-generation mobile broadband standard and is sold to customers as 4G, not 3G. VoLTE is not a separate network at all: it is a way of carrying voice calls as data packets over that same LTE network, using…
Read the full explanation →1 gigabyte in binary system is equivalent to
- A.1000 kilobytes
- B.1024 megabytes
- C.1200 megabytes
- D.10000 kilobytes
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In the binary system every step up the ladder of memory units is a factor of 2 raised to 10, that is 1024, so one gigabyte holds 1024 megabytes.
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