A - they all use microprocessors to compute and store data.
Answer:
D. All are true.
Explanation:
All the given statements about CAD are true.
Energy from sources that can be regenerated or reused is called renewable energy.
Renewable energy is energy that can be replenished on a human timescale like hydro-electric power, solar energy and wind power. Geothermal energy is also considered renewable energy.
Answer:
Time to Live (or TTL)
Explanation:
This counter field is initially set at some value that is decremented by one each time the packet "hops." When the counter reaches zero the packet is disposed of.
Answer:
1. DBMS
C. <em>A storage system that provides efficient access to randomly chosen items</em>
G. <em>Performs database operations requested by application software</em>
2. data mining
B. <em>The process of extracting hidden information</em>
3. hash file
A. <em>A. means of locating a particular record within a file</em>
4. index key field
F. <em>An item used to identify records uniquely</em>
5. locking protocol
E. <em>A system to guard against database errors due to performing transactions concurrently</em>
6. relation
D. <em>A structural unit (with rows and columns) in a popular database model</em>
7. roll back schema
I. <em>A "road map" of a particular database's design</em>
J. <em>To "unwind" a transaction</em>
8. SQL
H. <em>A popular language that implements relational database operations.</em>
