CWNP CWSP CWSP-205 Questions & Answers

• Question 111:

  Given: One of the security risks introduced by WPA2-Personal is an attack conducted by an authorized network user who knows the passphrase. In order to decrypt other users' traffic, the attacker must obtain certain information from the 4-way handshake of the other users.

  In addition to knowing the Pairwise Master Key (PMK) and the supplicant's address (SA), what other three inputs must be collected with a protocol analyzer to recreate encryption keys? (Choose 3)

  A. Authenticator nonce

  B. Supplicant nonce

  C. Authenticator address (BSSID)

  D. GTKSA

  E. Authentication Server nonce

  Correct Answer: ABC

• Question 112:

  An attack is under way on the network. The attack is preventing users from accessing resources required for business operations, but the attacker has not gained access to any files or data. What kind of attack is described?

  A. Man-in-the-middle

  B. Hijacking

  C. ASLEAP

  D. DoS

  Correct Answer: D

• Question 113:

  Given: WLAN attacks are typically conducted by hackers to exploit a specific vulnerability within a network. What statement correctly pairs the type of WLAN attack with the exploited vulnerability? (Choose 3)

  A. Management interface exploit attacks are attacks that use social engineering to gain credentials from managers.

  B. Zero-day attacks are always authentication or encryption cracking attacks.

  C. RF DoS attacks prevent successful wireless communication on a specific frequency or frequency range.

  D. Hijacking attacks interrupt a user's legitimate connection and introduce a new connection with an evil twin AP.

  E. Social engineering attacks are performed to collect sensitive information from unsuspecting users

  F. Association flood attacks are Layer 3 DoS attacks performed against authenticated client stations

  Correct Answer: CDE

• Question 114:

  A WLAN is implemented using WPA-Personal and MAC filtering.

  To what common wireless network attacks is this network potentially vulnerable? (Choose 3)

  A. Offline dictionary attacks

  B. MAC Spoofing

  C. ASLEAP

  D. DoS

  Correct Answer: ABD

• Question 115:

  You are configuring seven APs to prevent common security attacks. The APs are to be installed in a small business and to reduce costs, the company decided to install all consumer-grade wireless routers. The wireless routers will connect to a switch, which connects directly to the Internet connection providing 50 Mbps of Internet bandwidth that will be shared among 53 wireless clients and 17 wired clients.

  To ensure the wireless network is as secure as possible from common attacks, what security measure can you implement given only the hardware referenced?

  A. WPA-Enterprise

  B. 802.1X/EAP-PEAP

  C. WPA2-Enterprise

  D. WPA2-Personal

  Correct Answer: D

• Question 116:

  ABC Company uses the wireless network for highly sensitive network traffic. For that reason, they intend to protect their network in all possible ways. They are continually researching new network threats and new preventative measures. They are interested in the security benefits of 802.11w, but would like to know its limitations.

  What types of wireless attacks are protected by 802.11w? (Choose 2)

  A. RF DoS attacks

  B. Layer 2 Disassociation attacks

  C. Robust management frame replay attacks

  D. Social engineering attacks

  Correct Answer: BC

• Question 117:

  What 802.11 WLAN security problem is directly addressed by mutual authentication?

  A. Wireless hijacking attacks

  B. Weak password policies

  C. MAC spoofing

  D. Disassociation attacks

  E. Offline dictionary attacks

  F. Weak Initialization Vectors

  Correct Answer: A

• Question 118:

  What type of WLAN attack is prevented with the use of a per-MPDU TKIP sequence counter (TSC)?

  A. Weak-IV

  B. Forgery

  C. Replay

  D. Bit-flipping

  E. Session hijacking

  Correct Answer: C

• Question 119:

  Given: John Smith uses a coffee shop's Internet hot-spot (no authentication or encryption) to transfer funds between his checking and savings accounts at his bank's website. The bank's website uses the HTTPS protocol to protect sensitive account information. While John was using the hot-spot, a hacker was able to obtain John's bank account user ID and password and exploit this information.

  What likely scenario could have allowed the hacker to obtain John's bank account user ID and password?

  A. John's bank is using an expired X.509 certificate on their web server. The certificate is on John's Certificate Revocation List (CRL), causing the user ID and password to be sent unencrypted.

  B. John uses the same username and password for banking that he does for email. John used a POP3 email client at the wireless hot-spot to check his email, and the user ID and password were not encrypted.

  C. John accessed his corporate network with his IPSec VPN software at the wireless hot-spot. An IPSec VPN only encrypts data, so the user ID and password were sent in clear text. John uses the same username and password for banking that he does for his IPSec VPN software.

  D. The bank's web server is using an X.509 certificate that is not signed by a root CA, causing the user ID and password to be sent unencrypted.

  E. Before connecting to the bank's website, John's association to the AP was hijacked. The attacker intercepted the HTTPS public encryption key from the bank's web server and has decrypted John's login credentials in near real-time.

  Correct Answer: B