DIT 306  STRUCTURED CABLING.

UNIVERSITY EXAMINATIONS: 2016/2017
EXAMINATION FOR THE DIPLOMA IN INFORMATION TECHNOLOGY
DIT 306 STRUCTURED CABLING
DATE: JULY, 2017 TIME: 2 HOURS
INSTRUCTIONS: Answer question ONE and any other TWO questions.

QUESTION ONE COMPULSORY (30 MARKS)
(a) Discuss the importance of Good Cable management in a communication rack. [4 MARKS]
(b) State any FOUR common copper testing devices and explain their uses. [4 MARKS]
(c) Explain THREE aspects that affect the successful installation of a Cabling System. [6 MARKS]
(d) Define “UTP Full Channel Test”. [2 MARKS]
(e) Communication systems use communication cables to send signals between the different system
components. Discuss TWO forms of communication system signals. [4 MARKS]
(f)List FIVE factors that one need to consider when selecting networking media. [5 MARKS]
(g) Explain why it is important to investigate Horizontal and Backbone pathways when conducting
pre-cabling preparation. [2 MARKS]

(h) Explain any three copper media advantages. [3 MARKS]
QUESTION TWO
(a) State the preferred Network Topology for Backbone Cabling Systems giving the reason why.
[2 MARKS]
(b) Discuss FOUR different methods for distributing inter-building backbone cables to multiple
buildings on a campus. [8 MARKS]
(c) Discuss the following Ethernet Standards
(i) 10BaseFB
(ii) 100Base-T
(iii) 100Base-FX
(iv). 10GigabitEthernet
[4 MARKS]
(d) Discuss TWO reasons why the ANSI/TIA/EIA 568 cabling standards specify a minimum of
TWO recognized cables installed to each work area location. [2 MARKS]
(e) Discuss any FOUR categories of communication systems in commercial buildings. [4 MARKS]
QUESTION THREE
(a) Discuss FOUR wiring errors that a Wire Map Test can detect. [4 MARKS]
(b) Power over Ethernet (POE) is a technology that lets network cables carry electrical power.
Discuss any FOUR merits of POE. [4 MARKS]
(c) Discuss FOUR advantages of the TIA/EIA 568 Commercial Building Telecommunication Cabling
standards. [4 MARKS]
(d) Describe the following types of crosstalk. [2 MARKS]
(i) AXT
(ii) FEXT
(e) The process of testing communication cables is divided into THREE phases. Discuss.
[6 MARKS]
QUESTION FOUR
(a) Highlight FOUR media types allowed for use in the backbone subsystems for new cable
installations as supported by the ANSI/TIA/EIA 568 B standard release of 2001. [4 MARKS]

(b) Identify the SIX subsystems of a structured cabling system. [6 MARKS]
(c) Highlight the function of an Access Point. [2 MARKS]

(d) With the aid of a diagram, explain the principle behind how Optical Fiber transmits light.
[8 MARKS]
QUESTION FIVE
(a) Define STRUCTURED CABLING. [2 MARKS]
(b)Explain FIVE GUIDELINES for Wireless security. [5 MARKS]
(c)Differentiate the following terms: [6 MARKS]
i. Noise and crosstalk
ii. Interference and attenuation
iii. Bandwidth and through put

(d) Discuss any FOUR causes of attenuation. [4 MARKS]
(e) Discuss THREE features of a Thick-net cable. [3 MARKS]

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