3d1x2 5 Level CDC Vol. 2
- 1.What happens when more bits are added to a digital signal arranged in a sequence understood by the sender and receiver?
- A.
A code set is established.
- B.
A word is created.
- C.
An octet is formed.
- D.
Nothing.
- 2.How many possible symbols can 4 bits represent?
- A.
2
- B.
4
- C.
8
- D.
16
- 3.In networking, a byte is identified as a/an
- A.
Bit.
- B.
Word.
- C.
Octet.
- D.
Letter.
- 4.What organization sets important computer networking wiring standards for residential and commercial network cabling?
- A.
Electronic Industries Alliance (EIA).
- B.
Telecommunications Industry Association (TIA).
- C.
The American National Standards Institute (ANSI).
- D.
The National Institute of Standards and Technology (NIST).
- 5.What Electronic Industries Alliance (EIA)/Telecommunications Industry Association (TIA) standard is used for commercially building telecommunications cabling?
- A.
568A
- B.
569A
- C.
570A
- D.
606A
- 6.Which of the following is an International Telecommunication Union (ITU) standardized format used for digital telecommunications services backbone system?
- A.
E-carrier.
- B.
Structured query language.
- C.
International Organization for Standardization.
- D.
American Standard Code for Information Interchange.
- 7.There is a worldwide nonprofit association of technical professionals that promotes the development of standards called the
- A.
Internet Engineering Task Force (IETF).
- B.
Institute of Electrical and Electronics Engineers (IEEE).
- C.
European Telecommunications Standards Institute (ETSI).
- D.
Internet Corporation for Assigned Names and Numbers (ICANN).
- 8.A collection of standards for local area network (LAN) architectures, protocols, and technologies called Project 802 were developed by the
- A.
Internet Engineering Task Force (IETF).
- B.
Institute of Electrical and Electronics Engineers (IEEE).
- C.
European Telecommunications Standards Institute (ETSI).
- D.
Internet Corporation for Assigned Names and Numbers (ICANN).
- 9.The “parent” organization, headquartered in Geneva, Switzerland, for all other telecommunications organizations is the
- A.
Internet Engineering Task Force (IETF).
- B.
International Telecommunication Union (ITU).
- C.
Institute of Electrical and Electronics Engineers (IEEE).
- D.
International Telegraph and Telephone Consultative Committee (CCITT).
- 10.What organization is responsible for the X-series and V-series standards?
- A.
Internet Engineering Task Force (IETF).
- B.
International Telecommunication Union (ITU).
- C.
Institute of Electrical and Electronics Engineers (IEEE).
- D.
International Telecommunication Union Telecommunications Standardization Sector (ITU-T).
- 11.Which series of standards are recommended for data transmission using the telephone network?
- A.
T
- B.
V
- C.
X
- D.
Z
- 12.The definition of the Open System Interconnect (OSI) reference model was a major contribution to networking made by the
- A.
Internet Engineering Task Force (IETF).
- B.
International Telecommunication Union (ITU).
- C.
International Organization for Standardization (ISO).
- D.
Institute of Electrical and Electronics Engineers (IEEE).
- 13.Within how many feet of the data communications equipment (DCE) connection does the Electronics Industries Alliance (EIA) RS–232–C standard prescribes bipolar-voltage serial data transmission?
- A.
25
- B.
50
- C.
100
- D.
200
- 14.Which Electronics Industries Alliance (EIA) interface standard has the ability to work in either balanced or unbalanced electrical circuits?
- A.
RS–232–C.
- B.
RS–423.
- C.
RS–485.
- D.
RS–530.
- 15.What transmission rates does Electronic Industries Alliance (EIA) RS–530 accommodate?
- A.
20 kilobits per second (Kbps) to 200 Kbps.
- B.
20 Kbps to 2 megabits per second (Mbps).
- C.
20 Kbps to 20 Mbps.
- D.
20 Kbps to 22 Mbps.
- 16.What two sublayers did the Institute of Electrical and Electronics Engineers (IEEE) divide the Open System Interconnect (OSI) data link layers into?
- A.
High Level Data Link Control (HDLC) and Synchronous Data Link Control (SDLC).
- B.
Logical Link Control (LLC) and Media Access Control (MAC).
- C.
Data communications equipment (DCE) and data terminal equipment (DTE).
- D.
Electronic Industries Alliance (EIA) RS–232 and RS–530.
- 17.At what Open System Interconnect (OSI) layer are common data compression and encryption schemes used?
- A.
Application.
- B.
Session.
- C.
Presentation.
- D.
Transport.
- 18.What Open System Interconnect (OSI) layer is closest to the end user?
- A.
Application.
- B.
Session
- C.
Presentation.
- D.
Transport.
- 19.In the Open System Interconnect (OSI) model, a layer will communicate with three other OSI layers. Which one is not one of those layers?
- A.
Layer above.
- B.
Layer below.
- C.
Lowest layer.
- D.
Peer layer.
- 20.Which information unit, whose source and destination are network-layer entities, uses connectionless network service?
- A.
Frame.
- B.
Packet.
- C.
Segment.
- D.
Datagram.
- 21.What data communication protocol is used to govern the flow and format of information between systems?
- A.
Character-oriented.
- B.
Bit-oriented.
- C.
Routing.
- D.
Network.
- 22.In binary-synchronous protocol, what character is used to establish and maintain character synchronization prior to the message block and during transmission?
- A.
SEQ
- B.
SYN
- C.
STX
- D.
EST
- 23.What data communication protocol is based on bits and the position of the bits?
- A.
Character-oriented.
- B.
Bit-oriented.
- C.
Routing
- D.
Network.
- 24.What data communication protocol ensures that the receiving station can distinguish information from garbage?
- A.
Asynchronous protocol.
- B.
Binary synchronous protocol.
- C.
Synchronous Data Link Control (SDLC).
- D.
High-Level Data Link Control (HDLC).
- 25.A group of computers and associated devices that share a common communications line within a small geographic area is a
- A.
Metropolitan area network (MAN).
- B.
Local area network (LAN).
- C.
Wide area network (WAN).
- D.
Virtual private network (VPN).
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