This set of Computer Organization and Architecture Multiple Choice Questions & Answers (MCQs) focuses on “USB – 1”.
1. The transfer rate, when the USB is operating in low-speed of operation is _____
a) 5 Mb/s
b) 12 Mb/s
c) 2.5 Mb/s
d) 1.5 Mb/s
View Answer
Explanation: The USB has two rates of operation the low-speed and the full-speed one.
2. The high speed mode of operation of the USB was introduced by _____
a) ISA
b) USB 3.0
c) USB 2.0
d) ANSI
View Answer
Explanation: The high-speed mode of operation was introduced with USB 2.0, which enabled the USB to operate at 480 Mb/s.
3. The sampling process in speaker output is a ________ process.
a) Asynchronous
b) Synchronous
c) Isochronous
d) None of the mentioned
View Answer
Explanation: The isochronous process means each bit of data is separated by a time interval.
4. The USB device follows _______ structure.
a) List
b) Huffman
c) Hash
d) Tree
View Answer
Explanation: The USB has a tree structure with the root hub at the centre.
5. The I/O devices form the _____ of the tree structure.
a) Leaves
b) Subordinate roots
c) Left subtrees
d) Right subtrees
View Answer
Explanation: The I/o devices form the leaves of the structure.
6. USB is a parallel mode of transmission of data and this enables for the fast speeds of data transfers.
a) True
b) False
View Answer
Explanation: The USB does a serial mode of data transfer.
7. In USB the devices can communicate with each other.
a) True
b) False
View Answer
Explanation: It allows only the host to communicate with the devices and not between themselves.
8. The device can send a message to the host by taking part in _____ for the communication path.
a) Arbitration
b) Polling
c) Prioritizing
d) None of the mentioned
View Answer
Explanation: None.
9. When the USB is connected to a system, its root hub is connected to the ________
a) PCI BUS
b) SCSI BUS
c) Processor BUS
d) IDE
View Answer
Explanation: The USB’s root is connected to the processor directly using the BUS.
10. The devices connected to USB is assigned a ____ address.
a) 9 bit
b) 16 bit
c) 4 bit
d) 7 bit
View Answer
Explanation: To make it easier for recognition the devices are given 7 bit addresses.
11. The USB address space can be shared by the user’s memory space.
a) True
b) False
View Answer
Explanation: The USB memory space is not under any address spaces and cannot be accessed.
12. The initial address of a device just connected to the HUB is ________
a) AHFG890
b) 0000000
c) FFFFFFF
d) 0101010
View Answer
Explanation: By standard, the usual address of a new device is zero.
13. Locations in the device to or from which data transfers can take place is called ________
a) End points
b) Hosts
c) Source
d) None of the mentioned
View Answer
Explanation: None.
14. A USB pipe is a ______ channel.
a) Simplex
b) Half-Duplex
c) Full-Duplex
d) Both Simplex and Full-Duplex
View Answer
Explanation: This means that the pipe is bi-directional in sending messages or information.
15. The type/s of packets sent by the USB is/are _______
a) Data
b) Address
c) Control
d) Both Data and Control
View Answer
Explanation: This means that the USB gets both data and control signals required for the transfer operation.
Sanfoundry Global Education & Learning Series – Computer Organisation and Architecture.
- Practice Computer Science MCQs
- Check Computer Science Books
- Apply for Computer Science Internship
- Practice Information Technology MCQs
- Practice BCA MCQs
