Question 66
[QID: 941] An I/O port typically consists of four registers: status, ______, ______, and ______.
Detailed Solution
A standard hardware I/O port interface provides Status, Control, Data-In, and Data-Out registers.
[QID: 941] An I/O port typically consists of four registers: status, ______, ______, and ______.
A standard hardware I/O port interface provides Status, Control, Data-In, and Data-Out registers.
[QID: 943] The CPU hardware has a wire called ______ that the CPU senses after executing every instruction.
The CPU checks the Interrupt Request Line (INTR) at the end of every instruction cycle to see if an external hardware device needs service.
[QID: 950] A keyboard is an example of a device that is accessed through a ______ interface.
Keyboards transfer data character-by-character as user input arrives, making them character-stream I/O devices.
[QID: 953] Which of the following refers to cipher-block chaining?
In Cipher Block Chaining (CBC) mode, each plaintext block is XORed with the preceding ciphertext block before encryption.
[QID: 957] Which of the following refers to structure or format of data?
Syntax defines the structure, arrangement, or format of data and coding statements, whereas semantics defines the operational meaning.