AA1 LT1 Flashcards
What is a structured cabling system?
Standards-compliant cabling and hardware for telecommunications infrastructure
What must the cabling installer understand to accommodate growth in networking?
Standards-based designs
What is the purpose of a cross-connect?
Connects horizontal and backbone cable
How many cabling runs should there be from the telecommunications closet to each work area?
At least two
What are the functions of an equipment room?
Terminate and cross-connect cables, Provide work space
What are the three types of cross-connects?
Horizontal, intermediate, main.
What do patch cords allow in terms of routing changes?
Easy routing changes
How many basic types can LAN cables be divided into?
Three: twisted-pair, coaxial, fibre-optic
What have local area networks been able to distribute historically?
Voice, video communications, data
What is at the physical and logical center of the network in a star topology?
Hub or switch
What is the purpose of a backbone in a structured cabling system?
Interconnections for different facilities
What are the three types of twisted-pair copper cables?
UTP, SCTP, STP
What are the traditional categories of telecommunications?
Voice, Data, Video
How does SCTP differ from UTP in construction?
Mylar/aluminum foil shield and drain wire
What are examples of the Voice category in telecommunications?
telephone, modem, fax
How are all network devices connected in a bus topology?
One length of cable
What are telecommunication closets primarily responsible for?
Floor serving
What is the purpose of the drain wire in a cable?
To ground the foil shield
What are examples of the Data category in telecommunications?
LAN, MAN, WAN, mainframe computers, PCs
What are examples of the Video category in telecommunications?
CATV, CCTV, interactive video
What type of topology do structured cabling systems typically use?
Physical star
What are equipment rooms also known as?
Main closet
What does the backbone store?
Common control equipment
What are cross-connects used for?
Attaching multiport connections to horizontal or backbone cabling.
