Question

Which methods can be used to implement multifactor authentication?

Answer 1

Multi factor authentication proves helpful in preventing your valuable data from being hacked or stolen. You may have to make use of multiple level passwords for authentication. This prevents hackers from accessing any valuable information. Some such preventive methods may include:-

• TOTP – Time based Single (One-Time) Password usage.

• SMS services (Short Message Services).

• Email services (Electronic mail services).

• Push Notification services.

Answer 2

Answer:

True

Explanation:

Reducer implementations can access the Configuration for a job via the JobContext. getConfiguration() method. A Reducer has three primary phases − Shuffle, Sort, and Reduce. Shuffle − The Reducer copies the sorted output from each Mapper using HTTP across the network.