Computer Organization Questions and Answers – USB – 2

This set of Computer Organization Interview Questions and Answers for freshers focuses on “USB-2”.

1. The first field of any packet is _____
a) PID
b) ADDR
c) ENDP
d) CRC16
View Answer

Answer: a
Explanation: The PID is the field that is used to identify the device (the device id).

2. The 4 bit PID’s are transmitted twice.
a) True
b) False
View Answer

Answer: a
Explanation: The fields are transmitted twice, once with the true values and the second time with the complemented values.

3. The last field in the packet is ______
a) PID
b) ADDR
c) ENDP
d) CRC
View Answer

Answer: d
Explanation: The last 5 bits of the packet is used for error checking, that is cyclic redundancy check.
advertisement
advertisement

4. The CRC bits are computed based on the values of the _____
a) PID
b) ADDR
c) ENDP
d) Both ADDR and ENDP
View Answer

Answer: d
Explanation: The CRC bits are calculated based on the values of the address and endp.

5. The data packets can contain data upto ______
a) 512 bytes
b) 256 bytes
c) 1024 bytes
d) 2 KB
View Answer

Answer: c
Explanation: None.
Note: Join free Sanfoundry classes at Telegram or Youtube

6. The most important objective of the USB is to provide ______
a) Isochronous transmission
b) Plug and play
c) Easy device connection
d) All of the mentioned
View Answer

Answer: d
Explanation: The above are all the common features of the USB.

7. The transmission over the USB is divided into ____
a) Frames
b) Pages
c) Packets
d) Tokens
View Answer

Answer: a
Explanation: To support the isochronous mode of operation the usb transmission is divided into frames.
advertisement

8. The _____ signal is used to indicate the beginning of a new frame.
a) Start
b) SOF
c) BEG
d) None of the mentioned
View Answer

Answer: b
Explanation: The SOF(State Of Frame) is used to indicate the beginning of a new frame.

9. The SOF is transmitted every ______
a) 1s
b) 5s
c) 1ms
d) 1Us
View Answer

Answer: c
Explanation: None.
advertisement

10. The power specification of usb is _____
a) 5v
b) 10v
c) 24v
d) 10v
View Answer

Answer: a
Explanation: None.

Sanfoundry Global Education & Learning Series – Computer Organisation and Architecture.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

advertisement
advertisement
Subscribe to our Newsletters (Subject-wise). Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Join our social networks below and stay updated with latest contests, videos, internships and jobs!

Youtube | Telegram | LinkedIn | Instagram | Facebook | Twitter | Pinterest
Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

Subscribe to his free Masterclasses at Youtube & discussions at Telegram SanfoundryClasses.