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Fundamentals of Telecommunications
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Self-Test
1. Alexander Graham Bell called his first telephone a synchronous telegraph.
a. true
b. false
2. The expiration of Bell's basic patents in 1893 and 1894 was the starting signal for open competition.
a. true
b. false
3. In 1946, Congress passed a Communications Act and established the Federal Communications Commission.
a. true
b. false
4. Each telephone subscriber is connected to several central offices (COs).
a. true
b. false
5. The local loop, or the connections between individual subscribers and central offices, is also known as the last mile.
a. true
b. false
6. The ________________ is a particular set of standards that allows the interworking of products from different vendors. It usually embodies a fiber-optic ring that will permit transmission in both directions.
a. local-area network (LAN)
b. wide-area network (WAN)
c. synchronous optical network (SONET)
d. common channel signaling network
7. Packet switching is used for which of the following?
a. credit-card verification
b. automated teller machines
c. SS7
d. the Internet and the World Wide Web
e. all of the above
8. The types of media that can transmit information in the telecommunications world are the following ______________.
a. copper wire, coaxial cable, fiber, and wireless
b. hybrid fiber/coax and copper wire
c. wireless and copper wire
d. copper wire, coaxial cable, fiber, and hybrid fiber/coax
9. Analog signals can be ________ by combining them with a carrier frequency.
a. carried
b. transported
c. multiplexed
d. mixed
10. ______________ is a high-performance switching and multiplexing technology that utilizes fixed-length packets to carry different types of traffic.
a. asynchronous transfer mode (ATM)
b. asymmetric digital subscriber line (ADSL)
c. synchronous optical network (SONET)
d. none of the above

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