Question Discussion & Solution

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.

For alphabet: Increase by + 4

 D + 4 → H + 4 → L + 4 → P + 4 → T + 4 → X

For Number: Decrease number by - 4

23 – 4 → 19 – 4 → 15 – 4 → 11 – 4 → 7 – 4 → 3

Option 1 is the correct answer: Local Area Network (LAN) has the highest transmission speed.

The pattern followed is

The logic followed here is :

Given expression is : 789 ÷ 689 + 13 – 25 × 1489

Replacing the signs as per the given directions and using the BODMAS rule:

789 - 689 ÷ 13 × 25 + 1489

789 - 53 × 25 + 1489

789 - 1325 + 1489

2278 - 1325

953

Hence, the correct answer is "953".