DIT306  STRUCTURED CABLING.

UNIVERSITY EXAMINATIONS: 2017/2018
EXAMINATION FOR THE DIPLOMA IN INFORMATION TECHNOLOGY
DIT306 STRUCTURED CABLING
FULLTIME/PARTTIME
DATE: AUGUST, 2018 TIME: 1 ½ HOURS
INSTRUCTIONS: Answer any THREE questions.

QUESTION ONE
(a) Discuss any FOUR highlights of the EIA/TIA-568A standards. [4 Marks]
(b) Define modal dispersion in fiber optics. [2 Marks]
(c) Explain THREE aspects that affect the successful installation of a Cabling System. [6 Marks]
(d)
(i) Highlight any THREE applications of POE[3 MARKS]
(ii) Discuss any FIVE reasons why you would opt to use a POE Device. [5 Marks]
(e) You are the network administrator of your firm, there is need to expand the network to
accommodate more users. Give reasons as to why you would choose a managed switch over a hub
for your networking device. [4 Marks]
f) Performing Site survey is an important stage as far as pre-cabling preparation is concerned. Explain
the tasks involved in site survey. [6 Marks]
QUESTION TWO
(a) Discuss FOUR different methods for distributing inter-building backbone cables to multiple
buildings on a campus. [4 Marks]
(b) Discuss any FOUR negative effects of poor cabling management. [4 Marks]
(c) Define the term “crosstalk” as used in structured cabling [2 Marks]
(d) Explain the Fiber Optics relay system. [8 Marks]
(e) What is the UTP Full Channel Test? [2 Marks]

QUESTION THREE
(a) Explain the differences between NEXT and FEXT? [4 Marks]
(b) Define the Permanent Link giving any THREE characteristics. [5 Marks]
(c) Define the term “propagation delay.” [2 Marks]

(d) Explain why it is important to investigate existing horizontal and backbone pathways during PreCabling preparations. [3 Marks]
(e) Discuss the function of the following. [6 Marks]

i) Patch Panel
ii) Punch Down Block
iii) Cable Certifier

QUESTION FOUR
(a) Discuss any THREE reasons why Fiber optic is the preferred media for backbone cabling?
[6 Marks]
(b) Discuss FOUR guidelines for wireless security. [4 Marks]
(c) Discuss FOUR wiring errors that a Wire Map Test can detect. [4 Marks]

(d) Highlight the function of a crimping tool. [2 Marks]
(e) Briefly explain the process of terminating a crossover cable. [4 Marks]
QUESTION FIVE
(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) Discuss the First THREE subsystems of a structured cabling system. [6 Marks]
(c) The process of Testing communication cables involves THREE steps. Explain [3 Marks]
(d) With the aid of a diagram, explain the principle behind how Optical Fiber transmits light.
[7 Marks]

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