Question 1

Encrypted files can be transmitted in both electronic form and as written messages.

Accepted Answer

A) True 
 B)False  True

Question 2

What is a hash value and how does it verify message integrity?

Accepted Answer

A hash value is a fixed-size string representing the original input's contents.If the input changes in any way,even by adding a period at the end of a sentence,the resulting output
has a different hash value.

Question 3

Which of the following is the first step in the digital signature process where Mike sends a message to Sophie?

Accepted Answer

A)  a message digest of Mike's message is calculated using a hashing algorithm 
B)  Sophie compares the message digest she calculated to Mikes's message 
C)  Sophie encrypts Mike's message with Mike's public key 
D)  the message digest is encrypted by Mike's private key 
A)  a message digest of Mike's message is calculated using a hashing algorithm 
B)  Sophie compares the message digest she calculated to Mikes's message 
C)  Sophie encrypts Mike's message with Mike's public key 
D)  the message digest is encrypted by Mike's private key A

Question 4

Which of the following is true about Message Authentication Code.

Accepted Answer

A)  it uses asymmetric encryption 
B)  the key is sent to the receiver securely 
C)  is uses PKI and certificates 
D)  it uses a private and public key 
A)  it uses asymmetric encryption 
B)  the key is sent to the receiver securely 
C)  is uses PKI and certificates 
D)  it uses a private and public key

Question 5

Which of the following makes a single pass on data and generates a 128-bit hash value displayed as a 32-character hexadecimal number and is used in VPNs?

Accepted Answer

A)  RSA 
B)  Message Digest 5 
C)  RC4 
D)  Twofish 
A)  RSA 
B)  Message Digest 5 
C)  RC4 
D)  Twofish

Question 6

What three conditions must be true to make a hashing algorithm secure?

Accepted Answer

1.No hash should be usable to determine

Question 7

Which of the following is commonly used for verifying message integrity?

Accepted Answer

A)  registration authority 
B)  CRL 
C)  pseudorandom number generator 
D)  hashing function 
A)  registration authority 
B)  CRL 
C)  pseudorandom number generator 
D)  hashing function

Question 8

Which component of IPsec enables computers to exchange keys to make an SA?

Accepted Answer

A)  IKE 
B)  ISAKMP 
C)  Oakley 
D)  IPsec driver 
A)  IKE 
B)  ISAKMP 
C)  Oakley 
D)  IPsec driver

Question 9

Which of the following was developed as a way of enabling Web servers and browsers to exchange encrypted information and uses a hashed message authentication code to increase security?

Accepted Answer

A)  SSH 
B)  SSL 
C)  TLS 
D)  IPsec 
A)  SSH 
B)  SSL 
C)  TLS 
D)  IPsec

Question 10

MATCHING
-A set of standard procedures that the Internet Engineering Task Force (IETF)developed for enabling secure communication on the Internet

Accepted Answer

A) AES 
B) block cipher 
C) ciphertext 
D) cryptanalysis 
E) DES
F)XOR function
G)IPsec
H)key management
I)plaintext
J)stream cipher 
A) AES 
B) block cipher 
C) ciphertext 
D) cryptanalysis 
E) DES
F)XOR function
G)IPsec
H)key management
I)plaintext
J)stream cipher

Question 11

Which of the following is NOT a critical goal of information security?

Accepted Answer

A)  confidentiality 
B)  scalability 
C)  authentication 
D)  nonrepudiation 
A)  confidentiality 
B)  scalability 
C)  authentication 
D)  nonrepudiation

Question 12

Which of the following is described as a 64-bit block cipher composed of a 16-round Feistel network and key-dependent S-box functions?

Accepted Answer

A)  Twofish 
B)  RC4 
C)  Blowfish 
D)  Rijndael 
A)  Twofish 
B)  RC4 
C)  Blowfish 
D)  Rijndael

Question 13

______________ cryptanalysis is applicable to block ciphers that use a substitution-permutation network including Rijndael,Twofish,and IDEA.

Accepted Answer

The answer of ______________ cryptanalysis is applicable to block ciphers...

Question 14

Which of the following is true about PRNGs?

Accepted Answer

A)  they are not completely random 
B)  their state is measured in bytes 
C)  the shorter the state, the longer the period 
D)  they can never produce the same value 
A)  they are not completely random 
B)  their state is measured in bytes 
C)  the shorter the state, the longer the period 
D)  they can never produce the same value

Question 15

In a passive attack,cryptanalysts eavesdrop on transmissions but don't interact with parties exchanging information.

Accepted Answer

A) True 
 B)False

Question 16

MATCHING
-the study of breaking encryption methods

Accepted Answer

A) AES 
B) block cipher 
C) ciphertext 
D) cryptanalysis 
E) DES
F)XOR function
G)IPsec
H)key management
I)plaintext
J)stream cipher 
A) AES 
B) block cipher 
C) ciphertext 
D) cryptanalysis 
E) DES
F)XOR function
G)IPsec
H)key management
I)plaintext
J)stream cipher

Question 17

Compare and contrast block cipher with stream cipher.

Accepted Answer

The two major types of encryption algori

Question 18

Which of the following best describes a CRL?

Accepted Answer

A)  a published listing of invalid certificates 
B)  serve as a front end to users for revoking certificates 
C)  a file that contains information about the user and public key 
D)  keeps track of issued credentials and manages revocation of certificates 
A)  a published listing of invalid certificates 
B)  serve as a front end to users for revoking certificates 
C)  a file that contains information about the user and public key 
D)  keeps track of issued credentials and manages revocation of certificates

Question 19

MATCHING
-a type of encryption algorithm that encrypts groups of cleartext characters

Accepted Answer

A) AES 
B) block cipher 
C) ciphertext 
D) cryptanalysis 
E) DES
F)XOR function
G)IPsec
H)key management
I)plaintext
J)stream cipher 
A) AES 
B) block cipher 
C) ciphertext 
D) cryptanalysis 
E) DES
F)XOR function
G)IPsec
H)key management
I)plaintext
J)stream cipher

Question 20

The standardization of cryptographic protocols discourages attackers from trying to break them.

Accepted Answer

A) True 
 B)False

Encrypted files can be transmitted in both electronic form and as written messages.

What is a hash value and how does it verify message integrity?

Which of the following is the first step in the digital signature process where Mike sends a message to Sophie?

Which of the following is true about Message Authentication Code.

Which of the following makes a single pass on data and generates a 128-bit hash value displayed as a 32-character hexadecimal number and is used in VPNs?

What three conditions must be true to make a hashing algorithm secure?

Which of the following is commonly used for verifying message integrity?

Which component of IPsec enables computers to exchange keys to make an SA?

Which of the following was developed as a way of enabling Web servers and browsers to exchange encrypted information and uses a hashed message authentication code to increase security?

MATCHING -A set of standard procedures that the Internet Engineering Task Force (IETF)developed for enabling secure communication on the Internet

Which of the following is NOT a critical goal of information security?

Which of the following is described as a 64-bit block cipher composed of a 16-round Feistel network and key-dependent S-box functions?

______________ cryptanalysis is applicable to block ciphers that use a substitution-permutation network including Rijndael,Twofish,and IDEA.

Which of the following is true about PRNGs?

In a passive attack,cryptanalysts eavesdrop on transmissions but don't interact with parties exchanging information.

MATCHING -the study of breaking encryption methods

Compare and contrast block cipher with stream cipher.

Which of the following best describes a CRL?

MATCHING -a type of encryption algorithm that encrypts groups of cleartext characters

The standardization of cryptographic protocols discourages attackers from trying to break them.

Network Security Fundamentals

TCP-IP

Network Traffic Signatures

Routing Fundamentals

Wireless Network Fundamentals

Understanding Wireless Security

Intrusion Detection and Prevention Systems

Firewalls

Firewall Design and Management

VPN Concepts

Internet and World Wide Web Security

Security Policy Design and Implementation

On-Going Security Management

Filters

Exam 5: Cryptography

Encrypted files can be transmitted in both electronic form and as written messages.

What is a hash value and how does it verify message integrity?

Which of the following is the first step in the digital signature process where Mike sends a message to Sophie?

Which of the following is true about Message Authentication Code.

Which of the following makes a single pass on data and generates a 128-bit hash value displayed as a 32-character hexadecimal number and is used in VPNs?

What three conditions must be true to make a hashing algorithm secure?

Which of the following is commonly used for verifying message integrity?

Which component of IPsec enables computers to exchange keys to make an SA?

Which of the following was developed as a way of enabling Web servers and browsers to exchange encrypted information and uses a hashed message authentication code to increase security?

MATCHING -A set of standard procedures that the Internet Engineering Task Force (IETF)developed for enabling secure communication on the Internet

Which of the following is NOT a critical goal of information security?

Which of the following is described as a 64-bit block cipher composed of a 16-round Feistel network and key-dependent S-box functions?

______________ cryptanalysis is applicable to block ciphers that use a substitution-permutation network including Rijndael,Twofish,and IDEA.

Which of the following is true about PRNGs?

In a passive attack,cryptanalysts eavesdrop on transmissions but don't interact with parties exchanging information.

MATCHING -the study of breaking encryption methods

Compare and contrast block cipher with stream cipher.

Which of the following best describes a CRL?

MATCHING -a type of encryption algorithm that encrypts groups of cleartext characters

The standardization of cryptographic protocols discourages attackers from trying to break them.

Network Security Fundamentals

TCP-IP

Network Traffic Signatures

Routing Fundamentals

Wireless Network Fundamentals

Understanding Wireless Security

Intrusion Detection and Prevention Systems

Firewalls

Firewall Design and Management

VPN Concepts

Internet and World Wide Web Security

Security Policy Design and Implementation

On-Going Security Management

Filters