| 161 |
Which transmission medium carries data as pulses of light? |
Computer Science/Informatics Practices
Transmission media |
Easy |
| 162 |
Which wireless medium is used by a typical TV remote control? |
Computer Science/Informatics Practices
Transmission media |
Easy |
| 163 |
Why are wires in twisted pair cables twisted together? |
Computer Science/Informatics Practices
Transmission media |
Medium |
| 164 |
Two buildings 2 km apart in an industrial area with heavy electrical machinery must be linked at very high sp… |
Computer Science/Informatics Practices
Transmission media |
Medium |
| 165 |
Which property distinguishes microwave transmission from radio wave transmission in general use? |
Computer Science/Informatics Practices
Transmission media |
Hard |
| 166 |
Which generation of mobile technology was analog and supported only voice calls? |
Computer Science/Informatics Practices
Mobile telecommunication |
Easy |
| 167 |
Text messaging (SMS) was introduced with which generation of mobile technology? |
Computer Science/Informatics Practices
Mobile telecommunication |
Easy |
| 168 |
Which feature is especially associated with 5G compared with earlier generations? |
Computer Science/Informatics Practices
Mobile telecommunication |
Medium |
| 169 |
Why are mobile phones also called cellular phones? |
Computer Science/Informatics Practices
Mobile telecommunication |
Medium |
| 170 |
Which generation was the first to be based entirely on Internet Protocol (IP) for both voice and data, enabli… |
Computer Science/Informatics Practices
Mobile telecommunication |
Hard |
| 171 |
Which protocol is used to send email messages to a mail server? |
Computer Science/Informatics Practices
Network protocols |
Easy |
| 172 |
Which protocol is mainly used to upload and download files between computers? |
Computer Science/Informatics Practices
Network protocols |
Easy |
| 173 |
A user reads email on a phone and a laptop and wants messages to stay on the server and appear the same on bo… |
Computer Science/Informatics Practices
Network protocols |
Medium |
| 174 |
What is the main job of the Internet Protocol (IP)? |
Computer Science/Informatics Practices
Network protocols |
Medium |
| 175 |
Which protocol is designed to connect two directly linked nodes, such as a home computer dialling an Internet… |
Computer Science/Informatics Practices
Network protocols |
Hard |
| 176 |
Which malware spreads across a network by itself without attaching to any host file? |
Computer Science/Informatics Practices
Threats and prevention |
Easy |
| 177 |
Unwanted bulk email messages, often advertisements, are called |
Computer Science/Informatics Practices
Threats and prevention |
Easy |
| 178 |
A free game downloaded from an unknown site works normally but secretly lets an attacker access the computer.… |
Computer Science/Informatics Practices
Threats and prevention |
Medium |
| 179 |
A college website becomes unreachable because thousands of infected computers send it requests at the same ti… |
Computer Science/Informatics Practices
Threats and prevention |
Medium |
| 180 |
Which description best distinguishes eavesdropping from snooping? |
Computer Science/Informatics Practices
Threats and prevention |
Hard |