Answer:
There is an error in "String s=s1-s2 ";
Explanation:
In java programming, we can subtract subtract two strings variable with "-" operator.Java programming does not support an overload of the '-' operator.In java, we can use only "+" operator to append two strings variable.There is no such method to subtract strings in java.Therefore in the given code String s=s1-s2 will give an "bad operand type" error because we can not subtract one string variable from the second string variable.
Answer:
Transport layer
Explanation:
The transport layer is responsible for maintaining end to end communication between devices connected on a network.
The TCP/IP determines how data is exchanged between devices connected on a network by providing end to end communications that determines how it should be broken into packets.
Answer: ....
Big Data
Explanation:
Big Data Technology can be defined as a Software-Utility that is designed to Extract,Analyse and Process the information from an extremely complex and large data sets which the Traditional Data Processing Software could never deal with. Big data is a field that treats ways to analyze, systematically extract information from, or otherwise deal with data sets that are too large or complex to be dealt with by traditional data-processing application software.
Predictive analytics assists enterprises in identifying future opportunities and likely risks by distinguishing specific patterns over the historical data. In general, prescriptive analytics is a predictive analytics which prescribes one or more courses of actions and shows the likely outcome/influence of each action.
Answer:
Crosstalk, Jitter, Impulse noise.
Explanation:
Crosstalk is a network error that occurs when one pair of cable causes interference on another pair of cables thereby preventing efficient data transmission.
Jitter may also impair the accuracy of the data being transmitted across network because minute variations in amplitude, phase, and frequency always occur. The generation of a perfect carrier signal in an analog circuit is almost impossible. The signal may be affected by continuous and rapid network gains or phase changes.
Impulse noise (also referred to as spikes) is the primary source of errors in data communications. Impulse noise can be caused by positioning a communications cable near a source of intermittent but strong electromagnetic pulses, such as an elevator motor.
Counter measures
Shielding (protecting wires by covering them with an insulating coating) is one of the best ways to prevent impulse noise, cross-talk.
Amplifiers can be used to increase signal strength since the connection would run across 4 floors.
Answer:
Yes this statement is true
Explanation:
Satelites help show a visual to cartographers to make more accurate maps easier.
