Midterm Lesson 2

Question 1

It is a process of identifying an individual and ensuring that the individual is the same who he/she claims to be.

Answer 1

It is a process of identifying an individual and ensuring that the individual is the same who he/she claims to be.

Question 2

A typical method for authentication over internet is via _______ and ________.

Answer 2

username; password

Question 3

It is a password which can be used one time only and is sent to the user as an SMS or an email at the mobile number/email address that they have specified during the registration process.

Answer 3

One Time Password (OTP)

Question 4

It is known as two-factor authentication method and requires two type of evidence to authentication an individual to provide an extra layer of security for authentication. Some other popular techniques for two-way authentication are: biometric data, physical token, etc. which are used in conjunction with username and password.

Answer 4

One Time Password (OTP)

Question 5

It is a technique to convert the data in unreadable form before transmitting it over the internet. Only the person who have the access to the key and convert it in the readable form and read it.

Answer 5

Encryption

Question 6

To avoid the transfer of key a method called ________, also known as public key encryption, is used.

Answer 6

asymmetric key encryption

Question 7

It is a technique for validation of data. Validation is a process of certifying the content of a document.

Answer 7

Digital Signatures

Question 8

The __________ is created by encrypting the data with the private key of the sender.

Answer 8

digital signature

Question 9

A special program called an _______ is used which is designed to protect the system against virus. It not only prevents the malicious code to enter the system but also detects and destroys the malicious code that is already installed into the system.

Answer 9

anti-virus

Question 10

It is a hardware/software which acts as a shield between an organization’s network and the internet and protects it from the threats like virus, malware, hackers, etc. It can be used to limit the persons who can have access to your network and send information to you.

Answer 10

Firewall

Question 11

There are two type of traffic in an organization: ________ traffic and _____ traffic.

Answer 11

inbound traffic and outbound traffic.

Question 12

Example of this are routers through which the network is connected to the network outside the organization i.e. Internet.

Answer 12

hardware firewalls

Question 13

These firewalls are installed and installed on the server and client machines and it acts as a gateway to the organizations‟ network.

Answer 13

Software Firewalls

Question 14

All the outbound traffic is routed through proxies for monitoring and controlling the packet that are routed out of the organization.

Answer 14

Proxy

Question 15

Based on the rules defined in the policies each packet is filtered by their type, port information, and source & destination information.

Answer 15

Packet Filtering

Question 16

Rather than going through all the field of a packet, key features are defined. The outgoing/incoming packets are judged based on those defined characteristics only.

Answer 16

Stateful Inspection

Question 17

It is a technique of hiding secret messages in a document file, image file, and program or protocol etc. such that the embedded message is invisible and can be retrieved using special software.

Answer 17

Steganography

Question 18

True or False:
In steganography, only the sender and the receiver know about the existence of the secret message in the image. The advantage of this technique is that these files are not easily suspected.

Answer 18

True

Question 19

The _______ acts as a fundamental system in case of a mishap where data is inadvertently lost or corrupted from original system.

Answer 19

backup system

Question 20

It involves a set of policies and procedures to preserve continuation of business in case of a disaster.

Answer 20

Disaster recovery

Question 21

A ______ may refer to a natural hazard or due to manual error or machine failure.

Answer 21

disaster

Question 22

Methods on Backup and DR of data:

Data is backed up on a full-scale and recovered back from the same.

Answer 22

Full back up

Question 23

Methods on Backup and DR of data:

Only changed or newly added data is backed up subsequently after the last full or incremental backup. Recovery is made with help of last full backup and all incremental backups performed everyday from the date of last full backup.

Answer 23

Incremental backup

Question 24

Methods on Backup and DR of data:

Only changed or newly added data is backed up subsequently after last full or differential backup but changes made in the previous differential backup are updated in next differential backup. This makes recovery process easier, which only requires data from last full backup and last differential backup copies

Answer 24

Differential backup