2024 Associate CET 6th Guide - Questions and Answers (Complete Solutions) The form of signaling used on telephone systems today is ____. a. ACS b. ISDN
... [Show More] c. POP d. CCS A CLEC is __________. A. A cable TV company B. The incumbent telephone company C. A wireless provider D. Either A or C The maximum bit rate available on a T-1 transmission system is __________. A. 56 kbps B. 64 kbps C. 1.544 Mbps D. 2.4 Gbps A call between area codes is __________. A. Local long distance B. Inter-LATA C. Intra-LATA D. Toll free The device that causes the phase change between mouth and ear audio in a telephone subscriber unit is the __________. A. Hybrid coil B. Delay line C. Hook switch D. Transmitter The 2nd generation digital wireless access tech that uses code patterns to separate users is : a. AMPS b. TDMA c. GSM d. CDMA Oscillators use quartz crystals that generate output by the: A. Phase-shift effect B. Piezoelectric effect C. Doppler effect D. Avalanche (or Zener) effect Analog telephone lines have what DC voltage level across the tip and ring when off-hook? a. 110 VDC b. 6 VDC c. -48 VDC d. none The velocity factor in a transmission line is: A. Equal to the termination impedance B. Determined by the line length C. Increased by the distributed capacitance and inductance of the line D. Compared to free space velocity Cables of different impedances may be combined for runs. A. True B. False The bandwidth of a standard definition analog TV signal is: a. 6 MHz b. 16 MHz c. 24 MHz d. 88 MHz What radio receiver section determines the radio's inherent noise level? A. RF B. Mixer C. IF D. Detector Carbon microphones are much like variable: A. Capacitors B. Resistors C. Thermistors D. Inductors In telecommunications work, ___ is replacing twisted pair cabling. a. microwave b. wireless c. fiber optics d. both b and c A length of coaxial cable, used for computers, radio or television signals, is open at both ends. With an ohm meter, the resistance measured from the center conductor to the shield is 50 ohms. What does this indicate? A. The cable is partially shorted B. The cable is completely open C. That reading is correct for 50 ohm impedance RF cables D. That reading is lower than 72 ohms for video cables Waveguides are not utilized at HF of VHF frequencies because: A. Characteristic impedance is too high B. Resistance to high frequencies is too high C. Large waveguide dimensions required at lower frequencies are not practical D. Grounding problems A Logic 1, for TTL device is __________. A. More than 1 volt B. More than 1.5 volts C. More than 2 volts D. More than 3.5 volts A Logic 1, for a CMOS device connected to a 5V supply is __________. A. More than 1 volt B. More than 1.5 volts C. More than 2 volts D. More than 3.5 volts A green light usually indicates ___________. A. A logic high B. A logic low C. A TTL logic level D. A CMOS device Another name for an astable multivibrator is ___. a. latch b. one shot c. free running d. mono The number 12 in decimal is ______________ in binary. A. 1200 B. 1100 C. 1010 D. 1011 The number 25 in octal is __________ in binary. A. 010101 B. 011001 C. 110111 D. 100101 The three Basic logic gates are __________. A. AND, OR, NAND B. AND, OR, NOT C. NAND, NOR, Inverter D. NAND, XOR,NOR The NAND gate is sometimes called __________. A. All or nothing B. Any but not all C. Universal D. Inverter The boolean expression Y = /A+B represents ___. a. AND b. NAND c. OR d. NOR The difference between minterm and maxterm is ___. a. minterm, Y=1, least # of gates is AND b. maxterm, Y=1, least # of gates is OR c. minterm, Y=0, least # of gates is OR d. maxterm, Y=0, least # of gates is AND Which portion of the microprocessor would perform the addition of two numbers? a. ALU b. bus control c. instruction decoder d. register Which of the following languages can run directly on the microprocessor? a. assembly language b. interpreted language c. machine language d. compiled language Which component of a microcomputer connects all of the sub systems together? a. MPU b. memory c. bus d. I/O What type of control handles the rate of change of the error? a. on/off b. proportional c. integral d. derivative What type of control handles long term errors? a. on/off b. proportional c. integral d. derivative What type of control has the controlled element in either full open or full closed position? a. on/off b. proportional [Show Less]