Line graphs can also be used to compare changes over the same period of time for more than one group. Pie charts are best to use when you are trying to compare parts of a whole. They do not show changes over time. Bar graphs are used to compare things between different groups or to track changes over time.
Answer:
File
Explanation:
Files are frequently classified by the application for which they are primarily used (employee file). A primarily key in a file is the field whose value identifies a record among others in a data file
Answer:
False
Explanation:
There are cloud applications which can effectively handle big data.
For example processing and handling big data technologies like Hadoop, Spark can be used on cloud.
Services like <em>Amazon Web Services</em> or <em>Google Cloud Services</em> allows users analyze big data with various tools.
Answer: Switch, router, firewall
Explanation:
The function of the switch is to distribute the network to different networks similar in functioning to that of the hub but it performs filtering of the traffic present in the network using various traffic filtering algorithms.
The router whose main function is to route packets across the network is also used to connect between LANs and between LAN and a WAN.
The firewall is typically installed on systems or in servers or in routers with it most important function to filtering the traffic and minimize the packet delivery delay in LANs.
