This set of Computer Organization Interview Questions and Answers focuses on “PCI BUS-2”.
1. A complete transfer operation over the BUS, involving the address and a burst of data is called _____
a) Transaction
b) Transfer
c) Move
d) Procedure
View Answer
Explanation: None.
2. The device connected to the BUS are given addresses of ____ bit.
a) 24
b) 64
c) 32
d) 16
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Explanation: Each of the devices connected to the BUS will be allocated an address during the initialization phase.
3. The PCI BUS has _____ interrupt request lines.
a) 6
b) 1
c) 4
d) 3
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Explanation: The interrupt request lines are used by the devices connected to raise the interrupts.
4. _____ signal is sent by the initiator to indicate the duration of the transaction.
a) FRAME#
b) IRDY#
c) TMY#
d) SELD#
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Explanation: The FRAME signal is used to indicate the time required by the device.
5. ______ signal is used to enable commands.
a) FRAME#
b) IRDY#
c) TMY#
d) c/BE#
View Answer
Explanation: The signal is used to enable 4 command lines.
6. IRDY# signal is used for _______
a) Selecting the interrupt line
b) Sending an interrupt
c) Saying that the initiator is ready
d) None of the mentioned
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Explanation: The initiator transmits this signal to tell the target that it is ready.
7. The signal used to indicate that the slave is ready is _____
a) SLRY#
b) TRDY#
c) DSDY#
d) None of the mentioned
View Answer
Explanation: None.
8. DEVSEL# signal is used _________
a) To select the device
b) To list all the devices connected
c) By the device to indicate that it is ready for a transaction
d) None of the mentioned
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Explanation: This is signal is activated by the device after it as recognized the address and commands put on the BUS.
9. The signal used to initiate device select ________
a) IRDY#
b) S/BE
c) DEVSEL#
d) IDSEL#
View Answer
Explanation: This signal is used to initialization of device select.
10. The PCi BUS allows us to connect _______ I/O devices.
a) 21
b) 13
c) 9
d) 11
View Answer
Explanation: The PCI BUS allows only 21 devices to be connected as only the higher order 21 bits of the 32 bit address space is used to specify the device.
Sanfoundry Global Education & Learning Series – Computer Organisation and Architecture.
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