NO.20 You are designing distribution for a seven unit townhouse with in slab conduits. What is the MINIMUM number of 27 mm (1 in) rigid PVC Type 2 or metallic conduit that is required to satisfy distribution to each unit?

NO.21 Which of the following is NOT a source of electromagnetic interference (EMI)?

NO.22 You are designing a restaurant located within a retail mall. The ambient noise level of the restaurant is 70 dB. The ambient noise level of the mall common space is 75 dB. What is the MINIMUM sound pressure level (SPL) that should be used when designing the paging system within the restaurant?

NO.23 Which of the following is a description of a “ventilated channel’ cable tray?

NO.24 You have been asked to spec the physical security requirements related to the protection of assets for a new data center. The most common potential for damage categories you have considered include temperature, gases, organisms and projectiles. The one category that you have missed is:

NO.25 Active video converters are required for what type of CATV distribution system?

NO.26 The MINIMUM dimensions of the telecommunications main grounding busbar is ________ and variable in length.

NO.27 In what year was the TIA formed?

NO.28 You have the responsibility of designing a railroad track crossing for an outside plant OSP cable. There are three separate railroad tracks to be crossed. The measurement between the center of the two outer tracks is 16 m (52 ft). Using the standard track width of 1435 mm (4 ft 8.5 in), what is the length of the rigid steel conduit required to facilitate the crossing?

NO.29 DC loads are generally expressed in:

NO.30 A properly designed distributed paging system will provide a sound pressure level (SPL) for audio paging that is between ________ above ambient noise level.

NO.31 You are designing a large equipment room (ER) that will house many servers, switches, backup storage drives, and other communications equipment including peripheral devices. To prevent problems from harmonic currents that can be created by switching power supplies, you should arrange for:

NO.32 Using the “pathway design” for horizontal cable distribution, how many cable runs are placed to serve 15 individual?

NO.33 Using the sound pressure level (SPL) method of approximating distance and power, calculate the power required to produce 89 dB at 4 m (13.1 ft) with a loud speaker that is rated at a SPL of 95 dB. What input power level (in watts) is required to appropriately power the speaker?

NO.34 An offset in a conduit run should be considered the equivalent of a 90 degree bend.

NO.35 What is the minimum parallel separation distance from a UTC power cable and a UTC communication cable?

NO.36 Information for locating underground utilities is generally classified into four quality levels. Which of the following quality levels match this description? (Involves actually locating by use of nondestructive vacuum excavation equipment, or other means, to expose buried utilities at critical points).