FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 8: Data and Network Communication Technology

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 21

Short Answer

Review LaterAdd Note

Review Later

​A(n) ____________________ signal can contain one of a finite number of possible values.

Correct Answer

verified

​digital o...

View Answer

Show Answer

Question 22

Short Answer

Review LaterAdd Note

Review Later

Under ____________________ parity, the sender sets the parity bit to 0 if the count of 1-valued data bits is even or to 1 if the count of 1-valued data bits is odd.

Correct Answer

verified

Show Answer

Question 23

Multiple Choice

Review LaterAdd Note

​____ transmission uses a separate transmission line for each bit position.

The term ____ describes the maximum number of bits or bytes per second that the channel actually achieves with a specific communication protocol. ​

​____ routes signals between two locations through a physical connection, such as copper wire or optical fiber.

Square waves can be generated by rapidly switching (pulsing) an electrical or optical power source-a technique called ____.

Data messages vary in format and content and can include any primitive CPU data types or more complex data types.​

​Type I error rates can be reduced by combining parity checking and block checking.

Parity checking can be expanded to groups of characters or bytes by using ____.

​A complete ____ of a sine wave follows its full range from zero to positive peak, back to zero, to its negative peak, and then back to zero again.

​A wave with encoded bits is called a(n) ____________________ wave because it transports bits from one place to another.

​Circuit switching makes efficient use of channel capacity in most data transmission situations.

​What are the two main synchronization problems that can occur during message transmission?

S/N ratio is computed as the log of signal power minus noise power.​

Most local phone service is based on a channel-sharing strategy called ____.

​As bit transmission speed is increased, the duration of each bit in the signal, known as the ____, decreases.

In ____________________ transmission, messages are sent on an as-needed basis.

​Despite its complexities, packet switching is the dominant form of intercomputer communication.

In ____ mode, the receiver can communicate with the sender at any time over the second transmission line, even while data is still being transmitted on the first line.

​List two characteristics in which error detection and correction methods vary.