Questions and Answers
Many low-shaped channels are interwoven into one high-speed transmission by a __________.
Frequency-division multiplexer
The synchronous modems are more costly than the asynchronous modems because they contain __________.
clock recovery circuits
To connect a computer with a device in the same room, you might be likely to use __________.
a coaxial cable
Which of these is a standard interface for serial data transmission? __________.
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Which type of topology is best suited for large businesses which must carefully control distributed branch outlets? __________.
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Parity bits are used to __________.
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A collection of hyperlinked documents on the internet forms the __________.
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The most appropriate transmission medium to carry data in a network exposed to electrical interferences is __________.
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The latest clear channel encoding technique was developed by ______ Laboratories.
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International bipolar violations represent coding errors caused by line ______.
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Demultiplexing by a time division multiplexer occurs based on the position of data within a ______.
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The key to the operation of ADPCM is an ______ predictor.
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Higher the rate an analog signal is sampled, larger the difference between sampled ______.
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Common CVSD digitization rates are 8 and ______ kbps.
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A voice/data multiplexer will not flow control ______.
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The core for an optical fiber has a higher index of refraction than the ______.
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The residual error rate is the number of bit errors per twenty-four hours of continuous operation on an ______ line.
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Which layer of the international standard organization OSI model is responsible for creating and recognizing ______ boundaries?
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The path or channels over which information moves from one location to another make-up is called ______.
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Communications software package enable users to access services such as electronic mail and electronic ______ boards.
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Parameters that must be set in your software and modem before you can begin communications include speed and character ______.
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The forms of information that may be sent electronically are voice, data, and ______.
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The basic component necessary for communication is a ______.
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A half-duplex communication channel permits information to travel both ways, but not at ______.
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Deposition of dopants on fiber preforms is done by….(a) outside vapor deposition (b) axial vapor deposition (c) inside vapor deposition (d) all of these. The correct method is ______.
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One unsolved problem with satellite system is….(a) coverage (b) privacy (c) bandwidth (d) access. The unsolved problem is ______.
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When the index of refraction is greater in Material 1 than it is in Material 2, the velocity of propagation in Material 1 compared to Material 2 is……(a) equal or greater (b) greater (c) lesser (d) equal. The velocity is ______.
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The different angles of entry of light into an optical fiber are called.(a) Emitters (b) Modes (c) Sensors (d) Refractors. These angles are referred to as ______.
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In single-mode fiber, a large fraction of the power is propagated in the……(a) sheath (b) core (c) cladding (d) air. Most power is in the ______.
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The FT3C light wave system contains which of the following number of fibers?(a) 12 (b) 144 (c) 128 (d) 64. It contains ______ fibers.
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A key advantage of Sonet is its capability to enable….(a) data to be carried at high operating rates. (b) interoperability of optical transmission between interexchange carriers and telephone companies (c) routing of data to the home (d) interconnection of private networks. Sonet enables ______.
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The capability to provide consumers with video-on-demand.(a) will occur by the year ______.
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LAN, WAN and MAN are computer networks covering different areas. Their first alphabets L, W and M respectively stand for __________.
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In __________ topology, network components are connected by only one cable.
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Which of the following is used for __________ and demodulation?
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On a large scale, geographically spread LAN's office are connected by using __________.
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Computer connected with LAN __________.
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Telephone broadcast is an example of __________ transmission.
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The first computer network of the world is __________.
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When more computers are connected at one place, it is called __________.
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Study Notes
Communication and Networking Concepts
- Low-shaped channels can combine into a high-speed transmission via frequency-division or time-division multiplexers.
- Synchronous modems are pricier than asynchronous ones due to the presence of clock recovery circuits and their ability to handle larger volumes of data.
- Connecting computers within the same room typically utilizes dedicated lines or coaxial cables.
Interfaces and Topology
- RS232C is a standard interface for serial data transmission.
- Hierarchical topology is ideal for large businesses needing strict control over distributed branch operations.
- Types of transmission channels include Simplex, Half Duplex, and Full Duplex, with Double Duplex being illegitimate.
Error Detection and Transmission Media
- Parity bits serve the primary function of error detection in data transmission.
- Optical fiber is preferred for networks vulnerable to electrical interference due to its insulating properties.
Internet Fundamentals and Channels
- A collection of hyperlinked documents on the internet is known as the World Wide Web (WWW).
- The definition of residual error rate involves measuring bit errors during extended asynchronous communications.
OSI Model and Communication Software
- The data link layer in the OSI model is responsible for creating and recognizing frame boundaries.
- Communication software packages allow users to access electronic mail and bulletin boards.
Communication Parameters and Information Types
- Essential parameters for software and modem setup include speed, character format, and duplex settings.
- Information sent electronically can include voice, data, and video.
Communication Components and Pathways
- Necessary components for effective communication encompass a computer terminal, modem, and communications software.
- The physical path for data transmission is called a channel, line, or link.
Communication Channel Types
- Half-duplex channels enable bi-directional information flow, but not simultaneously.
- Carriers facilitate clear channel transmission and mark bit encoding techniques.
Fiber Optics and Digital Communication
- International bipolar violations pertain to coding errors in digital communications.
- Digital communication leveraging ADPCM achieves transportation rates up to 9600 bps, with common CVSD digitization rates being around 8 and 64 kbps.
Network Configuration and Benefits
- SONET frames consist of overhead bytes, whereas the OC-3 signal accommodates three OC-1 signals.
- High operating rates and interoperability among carriers are advantages of SONET.
Network Types and Topologies
- Networks can be classified into LAN (Local Area Network), WAN (Wide Area Network), and MAN (Metropolitan Area Network), each designated for different geographical coverage.
- Bus topology connects network components using a singular cable, contrasting with star and ring topologies.
General Knowledge and Historical Context
- The first computer network is recognized as ARPANET.
- The bank's ATM system exemplifies WAN using distributed networking.
Data Transmission Techniques
- Various data transfer techniques, such as Bluetooth and infrared, require line of sight for connectivity.
- Simplex transmission means data flows in one direction only, while half-duplex supports two-way communication alternately.
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Description
Test your knowledge on telecommunications concepts with this quiz covering key topics in transmission methods and modem types. Questions include the differences between frequency-division and time-division multiplexers, as well as synchronous and asynchronous modems. Perfect for students looking to reinforce their understanding of Chapter 2 in telecommunications.
