Question 1

A ______ uses an address table to translate the private IP addresses used inside the organization into proxy IP addresses used on the Internet.
A)NAT proxy server
B)virtual server
C)DNS server
D)privacy server
E)anomaly server

Accepted Answer

Network Address Translation (NAT) proxy server is used to translate private IP addresses into proxy IP addresses on the internet. It keeps track of the IP addresses and translates them when necessary to enable communication between devices on the internal network and the internet. Virtual server, DNS server, privacy server, and anomaly server do not perform this particular function.

Question 2

Compare and contrast symmetric and asymmetric encryption.

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Question 3

Using a chart format, describe 8 possible threats to a data network such as hardware, software, files, circuits, internal personnel, physical security, external people, and users). Describe 8 possible solutions to these conceivable threats.

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Question 4

What is PKI and why is it important?

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Question 5

RAID1 writes duplicate copies of all data on at least two different disks; this means that if one disk in the RAID array fails, there is no data loss because there is a second copy of the data stored on a different disk.This is referred to as _____
A)disk backup
B)hard drive duplication
C)cloud backups
D)disk duplication
E)disk mirroring

Accepted Answer

RAID1 is known as disk mirroring, where data is duplicated across at least two disks to ensure redundancy and data integrity. Therefore, the best choice for the blank is disk mirroring.

Question 6

How does a packet level firewall work? Describe the proxy server function, the packet layer firewall function, the DMZ and the architecture of this design.

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Question 7

What is IP spoofing?

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Question 8

A ______________ is a browser add-in or app that stores website passwords.
A)password collaborator
B)password manager
C)script manager
D)security envelope
E)security manager

Accepted Answer

A password manager is a tool used to store and manage website passwords. It provides the user with the ability to access websites without the need to remember multiple passwords.

Question 9

What is social engineering?

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Question 10

Describe how symmetric encryption works, draw a chart of this approach. How does DES differ from 3DES? From RC4? From AES?

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Question 11

How does PGP differ from SSL? How does SSL differ from IPsec? Compare and contrast IPSec tunnel mode and IPSec transfer mode.

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Question 12

Explain how a Trojan horse works.

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Question 13

Describe how asymmetric encryption works, using a chart to help to explain this approach.

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Question 14

What is a packet level firewall as compared to a NAT firewall and as compared to an applications layer firewall?

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Question 15

We can calculate the relative ___________, by multiplying the impact score by the likelihood.
A)rootkit
B)authentication
C)risk score
D)risk assessment
E)risk event

Accepted Answer

The relative risk can be calculated by multiplying the impact score (severity of the potential consequences of a risk event) by the likelihood (probability of the risk event occurring). The result is a risk score, which quantifies the level of risk and prioritizes actions to be taken. Therefore, the best choice is C) risk score.

Question 16

_______ is the most commonly used central authentication protocol.
A)DES
B)Kerberos
C)OSI
D)SK1
E)TGT

Accepted Answer

Kerberos is the most commonly used central authentication protocol. It provides secure authentication service by using secret-key cryptography. It is widely used in many applications like network authentication, email, and file sharing. DES is a symmetric key algorithm used for encryption, while OSI is a reference model for communication systems. SK1 and TGT are not valid options for a central authentication protocol.

Question 17

Compare and contrast DES and public key encryption.

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Question 18

What is the difference between a network-based IPS, host-based IPS and application-based IPS?

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Question 19

How does a network manager utilize a user profile?

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Question 20

Describe five biometric technologies. How can a biometric enhance security in a network? What are some of the advantages and disadvantages of biometrics?

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Quiz 11: Network Security

A ______ uses an address table to translate the private IP addresses used inside the organization into proxy IP addresses used on the Internet.