Question 1

The CSU/DSU has three alarm modes for advising the user about problems on the link. What does a blue alarm indicate?

Accepted Answer

A) Failure in the link has been detected 
B) Incoming signal has been corrupted 
C) Total loss of incoming signal 
D) Incoming signal has been detected 
A) Failure in the link has been detected 
B) Incoming signal has been corrupted 
C) Total loss of incoming signal 
D) Incoming signal has been detected

Question 2

The world's public switched telephone networks,both wireline and mobile,communicate with each other by means of a signaling protocol known as __________________.

Accepted Answer

A) private branch exchange (PBX) 
B) Signaling System 7 
C) public switched telephone network (PSTN) 
D) public data network (PDN) 
A) private branch exchange (PBX) 
B) Signaling System 7 
C) public switched telephone network (PSTN) 
D) public data network (PDN)

Question 3

Transmission of information in a communications link is defined by three protocol techniques: half duplex,full duplex,and __________.

Accepted Answer

A) asynchronous 
B) framing 
C) simplex 
D) synchronous 
A) asynchronous 
B) framing 
C) simplex 
D) synchronous

Question 4

What part of the BORSCHT function applies for alerting the central office to on- and off-hook conditions?

Accepted Answer

A) Ringing 
B) Supervision 
C) Hybrid 
D) Coding 
A) Ringing 
B) Supervision 
C) Hybrid 
D) Coding

Question 5

What type of cable is universally used by the phone company to extend the range of a connection?

Accepted Answer

A) Coaxial 
B) Loaded 
C) Fiber-optic 
D) Copper 
A) Coaxial 
B) Loaded 
C) Fiber-optic 
D) Copper

The CSU/DSU has three alarm modes for advising the user about problems on the link. What does a blue alarm indicate?

The world's public switched telephone networks,both wireline and mobile,communicate with each other by means of a signaling protocol known as __________________.

Transmission of information in a communications link is defined by three protocol techniques: half duplex,full duplex,and __________.

What part of the BORSCHT function applies for alerting the central office to on- and off-hook conditions?

What type of cable is universally used by the phone company to extend the range of a connection?

Fundamental Communications Concept

Amplitude Modulation

Angle Modulation

Communications Circuits

Transmitters

Receivers

Digital Communications Techniques

Digital Modulation and Demodulation

Wireless Communications Systems

Computer Communication and the Internet

Transmission Lines

Wave Propagation

Antennas

Waveguides and Radar

Fiber Optics

Filters

Exam 9: Telephone Networks

The CSU/DSU has three alarm modes for advising the user about problems on the link. What does a blue alarm indicate?

The world's public switched telephone networks,both wireline and mobile,communicate with each other by means of a signaling protocol known as __________________.

Transmission of information in a communications link is defined by three protocol techniques: half duplex,full duplex,and __________.

What part of the BORSCHT function applies for alerting the central office to on- and off-hook conditions?

What type of cable is universally used by the phone company to extend the range of a connection?

Fundamental Communications Concept

Amplitude Modulation

Angle Modulation

Communications Circuits

Transmitters

Receivers

Digital Communications Techniques

Digital Modulation and Demodulation

Wireless Communications Systems

Computer Communication and the Internet

Transmission Lines

Wave Propagation

Antennas

Waveguides and Radar

Fiber Optics

Filters