Question Discussion & Solution

Rickshaw, bus and train are the means of transport.

Mobile and radio are the means of communication, so out of the given options only letter is a mean of communication.

The correct answer is Comodo.

• Comodo is a firewall software, used to protect information from an unsecured public network.

Key Points

• A Database Management System (DBMS) is software designed to store, modify, and manage data in a database.
  • Examples of DBMS are SQL Server, My SQL, Oracle, MS Access, File Maker, Bigtable.
• A database is a data structure that stores organized information.
• The telephone directory is a good example of a database.
  • SQL stands for Structured Query Language.
    • It was designed by Donald D. Chamberlin and Raymond F. Boyce.
  • Oracle Database is a multi-model database management system produced by Oracle Corporation.
  • MySQL is  an open-source relational database management system.
    • Developer: Oracle Cor  poration.

Hence the code for change out is “reshsab”.

Fawn is young one of deer.

Similarly, Larvae are young one of insect.

CONCEPT:

Metals Have Luster:

• Metals, in their pure state, have a shining surface. This property is called metallic luster.
• All the metals have a luster and shiny property except Lead.
• If we polish metals most of them having a reflecting surface i.e. Gold, Silver, etc.

EXPLANATION:

• When light shines on a lustrous metal, the loosely bound electrons reflect incoming light, giving the metal a shiny appearance. Therefore option 3 is correct.