Which encryption protocol does Wi-Fi Protected Access 2 (WPA2) implement?

• Transport Layer Security(TLS) Encryption

• Advanced Encryption Standard AES

• Rivest Cipher 4 (RC4) encryption

• Data encryption standard DES

What is required to leverage Wi-Fi protected access (WPA) enterprise?

• Directory server

• RADIUS server

• EAP-TLS implementation

• EAP-TTLS implementation

Which protocol is designed to protect data in motion on home and small business networks without an authentication server?

• Wi-fi protected Access (WPA) Personal

• Wi-fi protected Access (WPA) Enterprise

• Internet Key Exchange IKE

• Diffie-Hellmann DH

An administrator needs to restrict a subordinate certificate authority CA from issuing certificates.

Where should those restrictions be stored?

• Within the private key of the subordinate CA that issues certificates

• Within the certificate of the parent CA of the subordinate CA

• Within the certificate of the subordinate CA of the parent CA

• Within the public key of the subordinate CA that issues certificates

How does a certificate authority CA guarantee the authenticity of the certificates that it issues?

• By creating a hash and signing with its private key

• By encrypting a serial number with its public key

• By encrypting a serial number with its private key

• By creating a hash and signing with its public key

Which standard describes the format for World Wide Web WWW certificates?

• International organization for standardization (ISO) 27001

• National institute of standard and technology NIST 800-53 Rev 4

• Institute of electrical and electronics engineers (IEEE) 1394

• Internet engineering task force IETF X.509v3

What makes virtual private network VPN end-to-end communications different from a local area network LAN environment?

• Password salting

• Hashing

• Port blocking

• Tunneling

Which computer process verifies the correct protocol to use to establish a layer 2 Tunneling Protocol L2TP with an internet protocol security IPsec virtual private network VPN connection?

• Network basic input/output system (netBIOS)

• Security Association SA

• Secure Socket Layer SSL

• File transfer protocol/ secure FTP/S

Which virtual private network(VPN) architecture relies on standard web ports and therefore does not require firewall changes?

• Layer 2 tunneling protocol L2TP

• Point-to-point tunneling protocol PPTP

• Internet protocol Security IPsec

• Secure sockets layer/ transport layer security (SSL/TLS) Protocol

An organization needs to secure an e-commerce website that external users must be able to trust.

Which type of certificate should this organization provide for the website?

• Self signed root certificate

• Trusted third party signed server certificate

• Self signed server certificate

• Trusted third party signed not certificate

A user encrypts a document with a key stored on the user’s laptop.

What should this user do to ensure the document can be decrypted even if the laptop is stolen or becomes corrupted?

• Choose a 256 bit key

• Password-protect the key stored on the laptop

• Archive a copy of the key to secure location

• Change the key regularly

Which cipher converts the first character of the alphabet to the last character of the alphabet?

• Vinegere

• atbash

• Caesar

• Affine

Which ciphertext would be produced if ‘candy’ were encrypted three times using the ROT13 cipher?

• xwpzy

• sivxy

• pnaql

• fdqgb

Which type of substitution cipher has been proven to be unbreakable if constructed, secured and used properly?

• Rossignols' great cipher

• One-time pad cipher

• caesar cipher

Which technique does frequency analysis use?

• Comparing ciphertext corresponding to a set of known values

• Attempting every possible key in the range

• Deducing the length of the keyword used in the polyalphabetic substitution cipher

• Looking at how often letters appear against the target ciphertext

Which attack method exploits common pairs of letters in classical ciphers?

• Frequency analysis

• Social engineering

• Brute force attack

• Side channel attack

Which attack method is the most resource intensive?

• Ciphertext-only

• Known-plaintext

• chosen -plaintext

• Chosen-ciphertext

Which method of breaking a hash digest includes pre-calculating all possible values of the hash digest?

• Brute force

• Differential cryptanalysis

• Linear cryptanalysis

• Rainbow table

What are statically analyzed to determine if alteration has occurred, indicating an image contains a steganography message?

• The least significant bit of some pixels

• The pixels’ parity bits

• The file header bits

• The most significant bit of some pixels

What is the plaintext that will be hidden in a steganographic message?

• Carrier

• Payload

• Channel

• Bit

Which key is used to verify the digital signature of a message or message digest?

• Sender's public key

• Sender’s private key

• Recipient’s public key

• Recipient’s private key

Which combination is used to encrypt and digitally sign a message ?

• Recipient’s public key to encrypt and sender’s private key to digitally sign

• Sender’s private key to encrypt and recipient’s public key to digitally sign

• recipient’s private key to encrypt and sender’s public key to digitally sign

• sender’s public key to encrypt and recipient’s private key to digitally sign

Which scheme reduces the number of keys required to be secured and distributed for secure communications with multiple senders?

• Asymmetric encryption

• Hashing function

• S-box

• Symmetric encryption

Which certificate is used to decrypt a hash from a file that has been digitally signed?

• Sender’s private key

• Recipient’s private key

• Sender’s public key

• Recipient’s public key