1. Chapter 3 Checkup Network+ Guide to Networks, Fourth Edition

2. True or False 1.Transmission methods using fiber-optic cables achieve faster throughput than those using copper or wireless connections. 2.Seven bits form a byte. 3.A pulse of positive voltage represents a 0. 4.In frequency modulation, the frequency of the carrier signal is modified by the application of the data signal. 5.An access point is a device that accepts wireless signals from multiple nodes and retransmits them to the rest of the network.

3. True or False 1.Transmission methods using fiber-optic cables achieve faster throughput than those using copper or wireless connections. 2.Seven bits form a byte. 3.A pulse of positive voltage represents a 0. 4.In frequency modulation, the frequency of the carrier signal is modified by the application of the data signal. 5.An access point is a device that accepts wireless signals from multiple nodes and retransmits them to the rest of the network.

4. Multiple Choice 1. The distance between corresponding points on a wave’s cycle is called its ____. a. Phasec. amplitude b. Amplituded. wavelength 2. The loss of a signal’s strength as it travels away from its source is known as ____. a. Impedancec. regeneration b. attenuationd. diffraction 3. _____ cable consists of color-coded pairs of insulated copper wires, each with a diameter of 0. 4 to 0. 8 mm. a. Coaxialc. Ethernet b. Twisted-paird. Fiber-optic 4. ____ cable consists of twisted wire pairs that are not only individually insulated, but also surrounded by a shielding made of a metallic substance such as foil. a. Fiber-opticc. Shielded twisted-pair b. Ethernetd. Coaxial 5. ____ is a measure of the highest frequency of signal a multimode fiber can support over a specific distance and is measured in MHz-km. a. Broadbandc. Latency b. Modal bandwidthd. Plenum

5. Multiple Choice 6. The hardware that makes up the enterprise-wide cabling system is known as the ____. a. cable plantc. sheath b. plenumd. thinnet 7. An antenna’s ____ describes the relative strength over a three dimensional area of all the electromagnetic energy the antenna sends or receives. a. plenumc. radiation pattern b. frequencyd. ferrule 8. In ____, a transmitter concentrates the signal energy at a single frequency or in a very small range of frequencies. a. structured cablingc. Webcasting b. narrowbandd. broadband 9. ____ signals are transmitted by frequencies in the 300- GHz to 300,000-GHz range, which is just above the top of the wireless spectrum as it is defined by the FCC. a. Attenuationc. Infrared b. Braidingd. Broadcast 10. ____ signals are composed of pulses of precise, positive voltages and zero voltages. a. Analogc. Narrowband b. Digitald. Optical

6. Multiple Choice 1. The distance between corresponding points on a wave’s cycle is called its ____. a. Phasec. amplitude b. Amplituded. wavelength 2. The loss of a signal’s strength as it travels away from its source is known as ____. a. Impedancec. regeneration b. attenuationd. diffraction 3. _____ cable consists of color-coded pairs of insulated copper wires, each with a diameter of 0. 4 to 0. 8 mm. a. Coaxialc. Ethernet b. Twisted-paird. Fiber-optic 4. ____ cable consists of twisted wire pairs that are not only individually insulated, but also surrounded by a shielding made of a metallic substance such as foil. a. Fiber-opticc. Shielded twisted-pair b. Ethernetd. Coaxial 5. ____ is a measure of the highest frequency of signal a multimode fiber can support over a specific distance and is measured in MHz-km. a. Broadbandc. Latency b. Modal bandwidthd. Plenum

7. Multiple Choice 6. The hardware that makes up the enterprise-wide cabling system is known as the ____. a. cable plantc. sheath b. plenumd. thinnet 7. An antenna’s ____ describes the relative strength over a three dimensional area of all the electromagnetic energy the antenna sends or receives. a. plenumc. radiation pattern b. frequencyd. ferrule 8. In ____, a transmitter concentrates the signal energy at a single frequency or in a very small range of frequencies. a. structured cablingc. Webcasting b. narrowbandd. broadband 9. ____ signals are transmitted by frequencies in the 300- GHz to 300,000-GHz range, which is just above the top of the wireless spectrum as it is defined by the FCC. a. Attenuationc. Infrared b. Braidingd. Broadcast 10. ____ signals are composed of pulses of precise, positive voltages and zero voltages. a. Analogc. Narrowband b. Digitald. Optical