CDCS Practice Exam Questions and Answers

A.  

Test the sensors by injecting smoke or simulated smoke directly into the sensor

B.  

Press the self-test button on each sensor in the data center

C.  

Inject smoke at the floor level

D.  

Test the sensors according to the vendor specification

A.  

Mechanical strength of the casing of a fuse or breaker.

B.  

The maximum voltage, in case of an electrical surge, that the fuse or breaker can handle without being destroyed or causing an electric damaging arc.

C.  

The current at which the device will trip.

D.  

The current that a fuse or breaker is able to interrupt without being destroyed or causing an electric damaging arc.

A.  

D-Curve

B.  

C-Curve

C.  

B-Curve

D.  

A-Curve

A.  

A single ToR (Top of Rack) switch is more expensive than an EoR (End of Row) switch.

B.  

You need a separate rack to install all your ToR (Top of Rack) switches.

C.  

There will be more switches to manage.

D.  

A ToR (Top of Rack) switch has only optical interfaces.

A.  

Do not use fire-rated glass due to the size limit and replace it with normal glass.

B.  

Split the window in two equal parts using an aluminum frame.

C.  

Split the window into parts smaller than specified as the maximum exposed area and ensure fire-rated frames are used.

D.  

Split the window in two equal parts fitted together with transparent silicon glue.

A.  

Security guards should perform regular inspections verifying the system works.

B.  

The system should not be based on motion detection as the lights might suddenly switch off while staff is still at work.

C.  

It is not advisable to use such a system since it will reduce the lifetime of LED lighting.

D.  

At all times, the levels should allow for security cameras to function properly.

A.  

Pre-terminated cabling is already factory tested and saves installation time.

B.  

There is no advantage as most new copper cabling network designs are based on category 3 or 5E for horizontal cabling.

C.  

Pre-terminated cabling has a higher fire rating.

D.  

Pre-terminated cabling makes ordering of the copper cables more complex, as you need to know in advance on which side the male or female connector needs to be located.

A.  

PUE does not indicate efficiency

B.  

Data center A

C.  

Data center B

D.  

Data center C

A.  

Air conditioners perpendicular to (at the end of the row of) the Cold-Aisle

B.  

Air conditioners perpendicular to (at the end of the row of) the Hot-Aisle

C.  

Air conditioners should always be placed at both sides of each row of racks

D.  

Air conditioner placement has no influence on cooling effectiveness and efficiency. Hence, they can be placed at any convenient location.

A.  

At the back/rear of the server at 50 mm/2 inch

B.  

At 1.5 meters/5 feet above the floor in the middle of the cold aisle

C.  

At the front/intake of the server at 50 mm/2 inch

D.  

At 1.5 meters/5 feet above the floor in the middle of the hot aisle