In programming, which of the following is a mechanism by which an object acquires the properties of another object?
Anamorphism
Inheritance
Encapsulation
Polymorphism
EXPLANATION
‘Inheritance’ is the mechanism provided by Object Oriented
Language, which helps an object to acquire the properties of another
object usually child object from parent object.
What does the sender need in order to digitally sign an email?
The public key of the recipient
The public key of the sender
The private key of the recipient
The private key of the sender
EXPLANATION
A digital signature is created by hashing a message and
encrypting the hash with the sender's private key. The recipient can
then decrypt the hash with the sender's public key. The recipient's keys
are not used for a digital signature.
The sender's public key is NOT required to sign the message.
The sender's public key (in the possession of the recipient) is used verify signature.
The recipient's public key is meaningless in this scenario.
The recipient's private key is meaningless in this scenario.
In Windows, if you want to format a hard
drive or removable disk so it can be read and written by both Windows
and Apple machines you would format the disk as which of the following?
NTFS
exFAT
HFS
REFS
EXPLANATION
Both Windows and Apple machines can read drives formatted in FAT32. Apple can read NTFS but cannot write to it.
Based on RFC 5322,
email address can have two "@" symbols as
long as the first one is in quotation marks to identify the local name
versus the domain name. IP addresses can be used to identify the domain
name. The "+" symbol is valid in local names.