7-30. The type of connectors for the I/O channels or
ports will be dictated by which of the following
factors?
1. Interfacing
2. Serial I/O
3. Parallel I/O
4. Voltage levels
7-31. The driver circuits are used for which of the
following tasks?
1. To pass data to the IOC
2. To set/clear output registers
3. To pass interface signals to the IOC
4. To pass interface and data signals to the
external equipments
7-32. External microcomputer I/O operations are usually
7-33<
handled by which of the following devices? -
1. A single serial port
2. A single parallel port
3. A single printed circuit board
4. Multiple printed circuit boards
Examples of consistencies found in the
architecture of a computers I/O section include
which of the following?
1. Types of external equipments
2. The arrangement and format of the
information exchanged
3. The type and number of interfaces possible
4. The type of circuits used to process I/O
information
7-34. If a printer senses a paper jam during a print
operation, which of the following actions should
occur?
1. A control word should be sent by the
computer specifying an error condition
2. A control word should be sent to the computer
specifying an error condition
3. A data word should be sent by the computer
specifying a special condition
4. A data word should be sent to the computer
specifying a special condition
7-35. Handshaking is also known by which of the
following terms?
1. Function control word
2. External interrupt words
3. Both 1 and 2 above
4. Alphabetic and numeric data exchange
7-36. The type of interface used when all bits of
7-37.
7-38.
7-39.
7-40.
46
information represented by a byte or word are
input or output simultaneously is known as which
of the following formats?
1. Serial format
2. Parallel format
3. 8-bit word format
4. 32-bit word format
Command instructions provide control over which
of the following areas/operations?
1.
2.
3.
4.
Main memory
CPU operations
IOC single and dual channel operations
Interrupt driven I/O operations
The I/O command start instruction accomplishes
which of the following actions?
1. Specifies an IOC, then halts further CPU
processing
2. References specific main memory addresses
3. Executes a previously stored IOC command
4. Indicates to the CPU that the command has
been processed
The CPU will delay processing while waiting for
an I/O operation only during which of the
following actions?
1.
2.
3.
4.
Execution of input chain operations
Execution of output chain operations
Actual data transfer operations
Executions of an I/O command start
instruction
The actual execution of chaining instructions is
independent of the CPU.
1.
True
2.
False