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QUESTION 117
Regarding constructing a good encryption algorithm, what does creating an avalanche effect indicate?
A. Changing only a few bits of a plain-text message causes the ciphertext to be completely different.
B. Changing only a few bits of a ciphertext message causes the plain text to be completely different.
C. Altering the key length causes the plain text to be completely different.
D. Altering the key length causes the ciphertext to be completely different.
Correct Answer: A QUESTION 118
With the increasing development of network, various network attacks appear. Which statement best describes the relationships between the attack method and the result?
A. Ping Sweep – TIS1 and TIS3 Port Scan – TIS2, TIS4 and TIS5
B. Ping Sweep – TIS2 and TIS4 Port Scan – TIS1, TIS3 and TIS5
C. Ping Sweep – TIS1 and TIS5 Port Scan – TIS2, TIS3 and TIS4
D. Ping Sweep – TIS2 and TIS3 Port Scan – TIS1, TIS4 and TIS5
Correct Answer: B QUESTION 119
Stream ciphers run on which of the following?
A. Individual blocks, one at a time, with the transformations varying during the encryption
B. Individual digits, one at a time, with the transformations varying during the encryption
C. Fixed-length groups of digits called blocks
D. Fixed-length groups of bits called blocks
Correct Answer: B QUESTION 120
Which description is true about ECB mode?
A. ECB mode uses the same 64-bit key to serially encrypt each 56-bit plain-text block.
B. In ECB mode, each 56-bit plain-text block is exclusive ORed (XORed) bitwise with the previous ciphertext block.
C. ECB mode uses the same 56-bit key to serially encrypt each 64-bit plain-text block.
D. In ECB mode, each 64-bit plain-text block is exclusive ORed (XORed) bitwise with the previousciphertext block.
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QUESTION 105
Which statement best describes the relationships between AAA function and TACACS+, RADIUS based on the exhibit shown?
A. TACACS+ – TIS1 and TIS3 RADIUS – TIS2 and TIS4
B. TACACS+ – TIS2 and TIS4 RADIUS – TIS1 and TIS3
C. TACACS+ – TIS1 and TIS4 RADIUS – TIS2 and TIS3
D. TACACS+ – TIS2 and TSS3 RADIUS – TIS1 and TIS4
Correct Answer: B
QUESTION 106
Which two statements are correct regarding a Cisco IP phone’s web access feature? (Choose two.)
A. It is enabled by default.
B. It uses HTTPS.
C. It can provide IP address information about other servers in the network.
D. It requires login credentials, based on the UCM user database.
Correct Answer: AC
QUESTION 107
Which option ensures that data is not modified in transit?
A. Authentication
B. Integrity
C. Authorization
D. Confidentiality
Correct Answer: B
QUESTION 108
What is a static packet-filtering firewall used for ?
A. It analyzes network traffic at the network and transport protocol layers.
B. It validates the fact that a packet is either a connection request or a data packet belonging to a connection.
C. It keeps track of the actual communication process through the use of a state table.
D. It evaluates network packets for valid data at the application layer before allowing connections.
Correct Answer: A
QUESTION 109
Which firewall best practices can help mitigate worm and other automated attacks?
A. Restrict access to firewalls
B. Segment security zones
C. Use logs and alerts
D. Set connection limits
Correct Answer: D QUESTION 110
Which statement best describes the Turbo ACL feature? (Choose all that apply.)
A. The Turbo ACL feature processes ACLs into lookup tablesfor greater efficiency.
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QUESTION 1
Which three primary functions are required to secure communication across network links? (Choose three.)
A. accounting
B. anti-replay protection
C. authentication
D. authorization
E. confidentiality
F. integrity
Correct Answer: CEF
QUESTION 2
Which two encryption algorithms are commonly used to encrypt the contents of a message? (Choose two.)
A. 3DES
B. AES
C. IPsec
D. PKI
E. SHA1
Correct Answer: AB
QUESTION 3
An administrator requires a PKI that supports a longer lifetime for keys used for digital signing operations than for keys used for encrypting data. Which feature should the PKI support?
A. certificate keys
B. nonrepudiation keys
C. usage keys
D. variable keys
Correct Answer: C
QUESTION 4
Two users must authenticate each other using digital certificates and a CA. Which option describes the CA authentication procedure?
A. The CA is always required, even after user verification is complete.
B. The users must obtain the certificate of the CA and then their own certificate.
C. After user verification is complete, the CA is no longer required, even if one of the involved certificates expires.
D. CA certificates are retrieved out-of-band using the PSTN, and the authentication is done in-band over a network.
Correct Answer: B
QUESTION 5
A customer purchases an item from an e-commerce site. The e-commerce site must maintain proof that the data exchange took place between the site and the customer. Which feature of digital signatures is required?
A. authenticity of digitally signed data
B. integrity of digitally signed data
C. nonrepudiation of the transaction
D. confidentiality of the public key
Correct Answer: C QUESTION 6
What is the basic method used by 3DES to encrypt plaintext?
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QUESTION 65
The information of Cisco Router and Security Device Manager(SDM) is shown below: Within the “sdm-permit” policy map, what is the action assigned to the traffic class “class-default”?
A. inspect
B. pass
C. drop
D. police
Correct Answer: C
QUESTION 66
The information of Cisco Router and Security Device Manager(SDM) is shown below: Which policy map is associated to the “sdm-zp-in-out” security zone pair?
A. sdm-permit-icmpreply
B. sdm-permit
C. sdm-inspect
D. sdm-insp-traffic
Correct Answer: C
QUESTION 67
The information of Cisco Router and Security Device Manager(SDM) is shown below: Within the “sdm-inspect” policy map, what is the action assigned to the traffic class “sdm-invalid-src”, and which traffic is matched by the traffic class “sdm-invlid-src” ? (Choose two.)
A. traffic matched by ACL 100
B. traffic matched by the nested “sdm-cls-insp-traffic” class map
C. inspect/log
D. traffic matched by ACL 104
E. Drop/Log
Correct Answer: AE
QUESTION 68
Which one is the most important based on the following common elements of a network design?
A. Business needs
B. Best practices C. Risk analysis
D. Security policy
Correct Answer: A
QUESTION 69
Examine the following items, which one offers a variety of security solutions, including firewall, IPS, VPN, antispyware, antivirus, and antiphishing features?