Answer:
An online UPS
Explanation:
An online uninterrupted power supply (ups) can be defined as an electronic device that is designed to supply continuous power to a load that uses alternating current (AC), through the inverter and rectifier arrangement (combination) during normal operation of the device. Thus, an online UPS through its inverter supplies continuous AC power in the event of a power failure.
Hence, an online UPS power backup method is designed and developed to continually provide power to a server (load) if there is a power outage as a result of a thunderstorm.
In conclusion, an online uninterrupted power supply (ups) guarantees a 24 hour power supply when properly installed and connected to a load or end user device such as a server.
Answer:
B
Explanation:
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Answer:
B. R is NP Hard
Explanation:
Given:
S is an NP complete problem
Q is not known to be in NP
R is not known to be in NP
Q is polynomial times reducible to S
S is polynomial times reducible to R
Solution:
NP complete problem has to be in both NP and NP-hard. A problem is NP hard if all problems in NP are polynomial time reducible to it.
Option B is correct because as given in the question S is an NP complete problem and S is polynomial times reducible to R.
Option A is not correct because R is not known to be in NP
Option C is not correct because Q is also not known to be in NP
Option D is not correct because Q because no NP-complete problem is polynomial time reducible to Q.
Answer:
2. It refers to broadband service provided via light-transmitting fiber-oprtics cables.
Explanation:
FTTH (which stands for Fiber-To-The-Home) is actually only one of the many similar services available, which all are identified by the acronym FTTx, where X, can be one of the following:
H = Home
C= Curb
B = Building
N= Neighborhood
This type of services are given on an all-passive network, composed only by fiber optic cables and passive splitters, carrying the broadband signal over one single fiber directly to the user, employing wave division multiplexing over a single mode fiber, in the 1310/1550/1625 nm range.
Answer:
Universal disc format (UDF) file system.
Explanation:
Blue-ray discs are the optical disc for data storage in a digital format. They were designed as succession of DVDs. They use UDF file system in them.
- UDF file system is used in blu-ray discs.
- This system is used to store data on discs by burning media.
- These files have the extension (.UDF)
- UDF is mostly used in DVDs and optical discs.
- Broad range of data is stored in computer storage using UDF.
