Related Questions

Replication should be used when which of the following exist?
A When transmission speeds and capacity in a network prohibit frequent refreshing of large tables.
B When using many nodes with different operating systems and DBMSs and database designs.
C The application's data can be somewhat out-of-date.
D All of the above.
DNA Replication-এর জন্য দরকার কোনটি?
A রাইরোজ
B রেস্টিকশন এনজাইম
C RNA পলিমারেজ
D DNA পলিমারেজ
Synchronization for pull replication is less disruptive and occurs only when needed by each site, not when a central master site thinks it is best to update.
A True
B False
Data replication is favored where most process requests are read-only and where the data are relatively static.
A True
B False
Which of the following is a disadvantage of most of the renewable energy sources?
A Highly polluting
B High waste disposal cost
C Unreliable supply
D High running cost
Which of the following is the disadvantage of electric traction over other systems of traction?
A Corrosion problems in the underground pipe work
B Short time power failure interrupts traffic for hours
C High capital outlay in fixed installations beside route limitation
D Interference with communication lines
Which of the following is the disadvantage of a synchronous condenser ?
A High maintenance cost
B Continuous losses in motor
C Noise
D All of the above
Which of the following is the disadvantage of static capacitor for power factor improvement ?
A Easily damaged by high voltage
B Cannot be repaired
C Short service life
D All of the above
Which of the following is the disadvantage due to low power factor ?
A Poor voltage regulation
B Increased transmission losses
C High cost of equipment for a given load
D All of the above
Which of the following is not a disadvantage of wireless LAN?
A Slower data transmission
B higher error rate
C interference of transmissions from different computers
D All of the above

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