Answer:
Information security is designed to protect the confidentiality, integrity and availability of computer system data from those with malicious intentions. Confidentiality, integrity and availability are sometimes referred to as the CIA Triad of information security. This triad has evolved into what is commonly termed the Parkerian hexad, which includes confidentiality, possession (or control), integrity, authenticity, availability and utility.
Answer:Answer:
TRUE
Explanation:
SATCOM in the Ku- and Ka- bands, as well as EHF systems are adversely affected by rain (the higher the frequency, the greater the effect) because one of the factors that affects availability in a satellites is rain. Higher frequencies in Ka-band (30/20 GHz), rain can have a very large effect that simply cannot be overcome at the usual levels of availability.
Rain reduces the quality of signals by interfering with the signals thereby, reducing their strength and quality.
Therefore Rain can not only degrade a satellite's signal, it can also cause a complete outage of the satellite's.
Answer:
Collision or electromagnetic interference (EMI)
Explanation:
Some network cables connected to switch or router ports are prone to internal collision (between two frames or packets) and external collision with electromagnetic waves from other sources (EMI).
Electromagnetic waves are also known as radio waves or signals. When they are transmitted, the network cable acts as a receiver, the received signal interferes with the packet in the cable. This is why the cyclic redundancy check (CRC) throws an error.
<span>The encapsulation unit on the presentation layer of the OSI model is the Data link layer (2).</span>
