M2Q11: Structured Cabling & Equipment Rooms

Question 1

A standard equipment rack is 42 U (rack units) in height and is ______ inches wide.

A. 20
B. 24
C. 19
D. 16

Answer 1

C. 19

Explanation: A standard IT Equipment rack is 19 inches wide which fits the standard width of rack mountable network hardware and servers. The spaces where equipment is installed are called rack units (“U” or “RU”) and a standard rack is 42 U in height.

Question 2

The set of standards that specify how to install network wiring in buildings is called ____________.

A. Vertical Cabling
B. The Patching Standard
C. Structured Cabling
D. Demarcation Cabling

Answer 2

C. Structured Cabling

Explanation: Structured Cabling specifies the wiring of data centers, offices, and other types of buildings that require network infrastructure cabling. The standards included in Structured Cabling define how to lay the backbone cabling between the entrance facility, demarc, equipment rooms and telecommunications enclosures. In addition horizontal cabling is defined which connect to work areas, and typically utilize a centralized 19-inch wide rack mountable patch panel.

Question 3

A _________________ is a rack mountable or wall mountable unit where many cables can be terminated and features a number of jacks for patching into with patch cables.

A. Wall Jack
B. Keystone Jack
C. Wall Plate
D. Patch Panel

Answer 3

D. Patch Panel

Explanation: Patch panels make it easy for us to terminate and manage large amounts of cables. Patch Panels are usually placed in demarc rooms and communications closets and are used to connect to horizontal runs that go to work areas where workstations connect to the network. With Patch Panels we can easily patch a horizontal run into a switch or other device.

Question 4

The Demarcation point is the responsibility of the service provider.

A. True
B. False

Answer 4

A. True

Explanation: The demarcation point is maintained by the service provider and is also where the responsibility of the service provider ends.

Question 5

This cabling component of Structured Cabling connects from a patch panel in a telecommunications closet to a work area.

A. Backbone Cabling
B. Horizontal Cabling
C. Vertical Cabling
D. Workstation Cabling

Answer 5

B. Horizontal Cabling

Explanation: Horizontal Cabling connects to the work area while Backbone Cabling connects entrance facilities, equipment rooms, and telecommunications closets.

Question 6

This type of cable must be used when installing cabling in areas where there are forced air returns.

A. Fire rated
B. Regular cable
C. Hazard cable
D. Plenum rated

Answer 6

D. Plenum rated

Explanation: Areas with open forced air returns such as dropped ceilings, raised floors, and other HVAC ventilation air returns are called plenum spaces and require plenum rated cables which are constructed with a fire-retardant plastic jacket.

Question 7

A 110 punch down is used to terminate horizontal cabling.

A. True
B. False

Answer 7

A. True

Explanation: Standard category 5e and category 6 patch panels use 110 punch downs and a 110 punch tool is needed to make the connection from each wire in the cable to the patch panel punch down area.