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Computing
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Using Information Technology Study Set 1
Quiz 6: Communications, Networks, and Cyberthreats: the Wired and Wireless World
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Question 141
Short Answer
Infrared and microwave transmission signals cannot work around obstacles or travel in curved lines,so they are called _________.
Question 142
Short Answer
The ________ a transmission medium's bandwidth,the more frequencies it can use to transmit data and the faster it is.
Question 143
Short Answer
Global Positioning Systems use ________ to continuously transmit signals to identify earth locations.
Question 144
Short Answer
The highest level that a satellite can occupy is the ________ earth orbit.
Question 145
Essay
_________ is similar to Wi-Fi but has a far greater range.
Question 146
Short Answer
________ software can be used to scan a computer's hard disk,CDs,and main memory to detect viruses.
Question 147
Short Answer
The short-range,wireless digital standard aimed at linking hand-held devices up to 33 feet apart is called ________.
Question 148
Short Answer
A _________ is a person who posts intentionally offensive,incendiary,or off-topic comments online.
Question 149
Short Answer
Worms,viruses,Trojan horses,and rootkits are all types of programs called ________.
Question 150
Short Answer
Simple one-way radio receivers that receive data (but not voice messages)are called ________; they are often used in hospital environments.
Question 151
Short Answer
A(n)________ is a program that copies itself repeatedly into a computer's memory or onto a disk drive and that can cause the computer to crash.
Question 152
Short Answer
Trolls,spies,hackers,and thieves are kinds of _________.
Question 153
Short Answer
The Global Positioning System is an example of a ________-way long-distance communications system.
Question 154
Short Answer
Almost all viruses are attached to an _________ file.
Question 155
Short Answer
A(n)________ uses malware to hijack hundreds or thousands of computers,called ________,and to remotely control them all.
Question 156
Short Answer
The three short-range wireless standards used in home automation networks,for linking switches and sensors around the house and yard,are Insteon,ZigBee,and _________.
Question 157
Short Answer
A ________ is a program that pretends to be a useful program,usually free,such as a game or screen saver,but carries viruses,or destructive instructions that cause problems without your knowledge.
Question 158
Short Answer
_________ is an international standard widely adopted in the U.S.A.,Europe,and Asia that supports fast cellphone data transfer rate; this standard has not been adopted yet by all carriers.