CS609-Midterm
1 / 50
Maximum number of interrupts in a standard PC is
2 / 50
Command register is an _____ bit register
3 / 50
File can be______ viewed as collection of clusters or blocks.
4 / 50
There are two main types of interrupts namely _________________.
5 / 50
The interval timer can operate in _______ modes.
6 / 50
BIOS support _____________UARTS as COM ports.
7 / 50
Following is not a method of I/O
8 / 50
By cascading two DMAs ____ bits can be transferred.
9 / 50
In self test mode the output of the UART is routed to its input.
10 / 50
Interrupt ______ is used to get or set the time.
11 / 50
NMI Stand for
12 / 50
Which port is known as Data Port______
13 / 50
14 / 50
To distinguish 486 with Pentium CPUID Test is used.
15 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
16 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
17 / 50
In ____________each byte is needed to be encapsulated in start and end.
18 / 50
If CPUID instruction is not present then the processor can be a
19 / 50
PPI stands for
20 / 50
Software based flow control make use of -------- control characters
21 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
22 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
23 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
24 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
25 / 50
______ is Disk interrupt.
26 / 50
Interrupt 9 usually reads the _________ from keyboard.
27 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
28 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
29 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
30 / 50
BPB stands for _________.
31 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
32 / 50
The interval timer can operate in ____modes.
33 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
34 / 50
LPTs can be swapped.
35 / 50
_________ is used to identify the cause of interrupt.
36 / 50
37 / 50
The service number is usually placed in the ________ register.
38 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
39 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
40 / 50
There are __________ kinds of serial communication.
41 / 50
------------ is used to read time from RTC
42 / 50
Hardware Interrupts are __________.
43 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
44 / 50
45 / 50
Operating system name contains ____ bytes in boot block.
46 / 50
There are two main types of interrupts, namely
47 / 50
Keyboard Status Byte is located at the address
48 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
49 / 50
There are two type of communication synchronous and Anti Synchronous
50 / 50
Int ________ is used to control the printer via the BIOS.
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