Question :
61) Which of the following a computer network in which : 1283684
61) Which of the following is a computer network in which connections rely on radio waves at frequencies of 2.4 GHz or 5 GHz for transmission?
A) CDMA
B) GPRS
C) Ethernet
D) Wifi
62) Which of the following situations is representative of the last mile issue in telecommunications?
A) An e-commerce site is available in only two language versions and customers speaking neither cannot browse through the site while shopping.
B) Suburban subscribers of an Internet Service Provider complain of poor Internet speeds compared to those enjoyed by downtown users.
C) Asian buyers of a certain smartphone brand are unable to use features such as 3G and Wifi because those countries do not yet have the relevant infrastructure.
D) Students find that the farther they are from their university building, the harder it is to connect to the Internet with their laptops.
63) Phone carriers had an edge over cable TV companies, in terms of last mile connectivity, because ________.
A) they supported higher transmission speeds
B) their networks used thicker coaxial cables
C) twisted pair wires could be repurposed to two-way communications
D) the optical fiber technology used could support greater bandwidth
64) Which of the following is a disadvantage of VoIP communication?
A) high costs of communication
B) increased rates of dropped calls or bad audio
C) greater inefficiencies due to wasted capacity
D) higher susceptibility to traffic congestion
65) Which of the following factors makes VoIP technology preferable to customers over circuit-switched networks?
A) security of data transmission
B) reliability of communication
C) lower rates of dropped calls
D) greater range of supplementary services
66) A network which connects computers, printers, scanners, and other devices in a single building or home is called a ________.
A) wide area network
B) personal area network
C) local area network
D) global area network
67) ________ refers to the technologies that make voice communications across networks using packets feasible, including over the Internet.
A) PSTN
B) VoIP
C) POTS
D) RFID
68) What is the drawback of using circuit-switching networks?
A) It often leads to waste of capacity.
B) It leads to a huge number of dropped calls.
C) It does not offer high rates of data transmission.
D) It does not support secure transmission of data.
69) Which of the following characteristics makes packet-switched networks preferable to circuit-switched networks?
A) security
B) quality
C) reliability
D) flexibility
70) Mary connects to the Internet and types the address of a Web page on her browser. The browser sends a request to the system hosting the Web page, which then sends back the instructions to display the page requested. Which network is being used in this process?
A) circuit-switched network
B) client-server network
C) peer-to-peer network
D) VoIP network
