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CWNP CWSP-208 Dumps

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Total 119 questions

Certified Wireless Security Professional (CWSP) Questions and Answers

Question 1

Given: You are the WLAN administrator in your organization and you are required to monitor the network and ensure all active WLANs are providing RSNs. You have a laptop protocol analyzer configured.

In what frame could you see the existence or non-existence of proper RSN configuration parameters for each BSS through the RSN IE?

Options:

A.

Probe request

B.

Beacon

C.

RTS

D.

CTS

E.

Data frames

Question 2

In an effort to optimize WLAN performance, ABC Company has upgraded their WLAN infrastructure from 802.11a/g to 802.11n. 802.11a/g clients are still supported and are used throughout ABC’s facility. ABC has always been highly security conscious, but due to budget limitations, they have not yet updated their overlay WIPS solution to 802.11n or 802.11ac.

Given ABC’s deployment strategy, what security risks would not be detected by the 802.11a/g WIPS?

Options:

A.

Hijacking attack performed by using a rogue 802.11n AP against an 802.11a client

B.

Rogue AP operating in Greenfield 40 MHz-only mode

C.

802.11a STA performing a deauthentication attack against 802.11n APs

D.

802.11n client spoofing the MAC address of an authorized 802.11n client

Question 3

For a WIPS system to identify the location of a rogue WLAN device using location patterning (RF fingerprinting), what must be done as part of the WIPS installation?

Options:

A.

All WIPS sensors must be installed as dual-purpose (AP/sensor) devices.

B.

A location chipset (GPS) must be installed with it.

C.

At least six antennas must be installed in each sensor.

D.

The RF environment must be sampled during an RF calibration process.

Question 4

What security vulnerabilities may result from a lack of staging, change management, and installation procedures for WLAN infrastructure equipment? (Choose 2)

Options:

A.

The WLAN system may be open to RF Denial-of-Service attacks

B.

WIPS may not classify authorized, rogue, and neighbor APs accurately

C.

Authentication cracking of 64-bit Hex WPA-Personal PSK

D.

Management interface exploits due to the use of default usernames and passwords for AP management

E.

AES-CCMP encryption keys may be decrypted

Question 5

You have been recently hired as the wireless network administrator for an organization spread across seven locations. They have deployed more than 100 APs, but they have not been managed in either an automated or manual process for more than 18 months. Given this length of time, what is one of the first things you should evaluate from a security perspective?

Options:

A.

The channel widths configured

B.

The channels in use

C.

The VLANs in use

D.

The firmware revision

Question 6

Select the answer option that arranges the numbered events in the correct time sequence (first to last) for a client associating to a BSS using EAP-PEAPv0/MSCHAPv2.

1. Installation of PTK

2. Initiation of 4-way handshake

3. Open system authentication

4. 802.11 association

5. 802.1X controlled port is opened for data traffic

6. Client validates server certificate

7. AS validates client credentials

Options:

A.

3—4—6—7—2—1—5

B.

4—3—5—2—7—6—1

C.

5—3—4—2—6—7—1

D.

6—1—3—4—2—7—5

E.

4—3—2—7—6—1—5

F.

3—4—7—6—5—2—1

Question 7

Given: Mary has just finished troubleshooting an 802.11g network performance problem using a laptop-based WLAN protocol analyzer. The wireless network implements 802.1X/PEAP and the client devices are authenticating properly. When Mary disables the WLAN protocol analyzer, configures her laptop for PEAP authentication, and then tries to connect to the wireless network, she is unsuccessful. Before using the WLAN protocol analyzer, Mary’s laptop connected to the network without any problems.

What statement indicates why Mary cannot access the network from her laptop computer?

Options:

A.

The nearby WIPS sensor categorized Mary’s protocol analyzer adapter as a threat and is performing a deauthentication flood against her computer.

B.

The PEAP client’s certificate was voided when the protocol analysis software assumed control of the wireless adapter.

C.

The protocol analyzer’s network interface card (NIC) drivers are still loaded and do not support the version of PEAP being used.

D.

Mary’s supplicant software is using PEAPv0/EAP-MSCHAPv2, and the access point is using PEAPv1/EAP-GTC.

Question 8

What attack cannot be detected by a Wireless Intrusion Prevention System (WIPS)?

Options:

A.

MAC Spoofing

B.

Eavesdropping

C.

Hot-spotter

D.

Soft AP

E.

Deauthentication flood

F.

EAP flood

Question 9

Your organization required compliance reporting and forensics features in relation to the 802.11ac WLAN they have recently installed. These features are not built into the management system provided by the WLAN vendor. The existing WLAN is managed through a centralized management console provided by the AP vendor with distributed APs and multiple WLAN controllers configured through this console.

What kind of system should be installed to provide the required compliance reporting and forensics features?

Options:

A.

WNMS

B.

WIPS overlay

C.

WIPS integrated

D.

Cloud management platform

Question 10

In what deployment scenarios would it be desirable to enable peer-to-peer traffic blocking?

Options:

A.

In home networks in which file and printer sharing is enabled

B.

At public hot-spots in which many clients use diverse applications

C.

In corporate Voice over Wi-Fi networks with push-to-talk multicast capabilities

D.

In university environments using multicast video training sourced from professor’s laptops

Question 11

As the primary security engineer for a large corporate network, you have been asked to author a new security policy for the wireless network. While most client devices support 802.1X authentication, some legacy devices still only support passphrase/PSK-based security methods.

When writing the 802.11 security policy, what password-related items should be addressed?

Options:

A.

MSCHAPv2 passwords used with EAP/PEAPv0 should be stronger than typical WPA2-PSK passphrases.

B.

Password complexity should be maximized so that weak WEP IV attacks are prevented.

C.

Static passwords should be changed on a regular basis to minimize the vulnerabilities of a PSK-based authentication.

D.

Certificates should always be recommended instead of passwords for 802.11 client authentication.

E.

EAP-TLS must be implemented in such scenarios.

Question 12

Given: ABC Hospital wishes to create a strong security policy as a first step in securing their 802.11 WLAN.

Before creating the WLAN security policy, what should you ensure you possess?

Options:

A.

Awareness of the exact vendor devices being installed

B.

Management support for the process

C.

End-user training manuals for the policies to be created

D.

Security policy generation software

Question 13

What policy would help mitigate the impact of peer-to-peer attacks against wireless-enabled corporate laptop computers when the laptops are also used on public access networks such as wireless hot-spots?

Options:

A.

Require Port Address Translation (PAT) on each laptop.

B.

Require secure applications such as POP, HTTP, and SSH.

C.

Require VPN software for connectivity to the corporate network.

D.

Require WPA2-Enterprise as the minimal WLAN security solution.

Question 14

What elements should be addressed by a WLAN security policy? (Choose 2)

Options:

A.

Enabling encryption to prevent MAC addresses from being sent in clear text

B.

How to prevent non-IT employees from learning about and reading the user security policy

C.

End-user training for password selection and acceptable network use

D.

The exact passwords to be used for administration interfaces on infrastructure devices

E.

Social engineering recognition and mitigation techniques

Question 15

As a part of a large organization’s security policy, how should a wireless security professional address the problem of rogue access points?

Options:

A.

Use a WPA2-Enterprise compliant security solution with strong mutual authentication and encryption for network access of corporate devices.

B.

Hide the SSID of all legitimate APs on the network so that intruders cannot copy this parameter on rogue APs.

C.

Conduct thorough manual facility scans with spectrum analyzers to detect rogue AP RF signatures.

D.

A trained employee should install and configure a WIPS for rogue detection and response measures.

E.

Enable port security on Ethernet switch ports with a maximum of only 3 MAC addresses on each port.

Question 16

Given: ABC Corporation is evaluating the security solution for their existing WLAN. Two of their supported solutions include a PPTP VPN and 802.1X/LEAP. They have used PPTP VPNs because of their wide support in server and desktop operating systems. While both PPTP and LEAP adhere to the minimum requirements of the corporate security policy, some individuals have raised concerns about MS-CHAPv2 (and similar) authentication and the known fact that MS-CHAPv2 has proven vulnerable in improper implementations.

As a consultant, what do you tell ABC Corporation about implementing MS-CHAPv2 authentication? (Choose 2)

Options:

A.

MS-CHAPv2 is compliant with WPA-Personal, but not WPA2-Enterprise.

B.

MS-CHAPv2 is subject to offline dictionary attacks.

C.

LEAP’s use of MS-CHAPv2 is only secure when combined with WEP.

D.

MS-CHAPv2 is only appropriate for WLAN security when used inside a TLS-encrypted tunnel.

E.

MS-CHAPv2 uses AES authentication, and is therefore secure.

F.

When implemented with AES-CCMP encryption, MS-CHAPv2 is very secure.

Question 17

What is a primary criteria for a network to qualify as a Robust Security Network (RSN)?

Options:

A.

Token cards must be used for authentication.

B.

Dynamic WEP-104 encryption must be enabled.

C.

WEP may not be used for encryption.

D.

WPA-Personal must be supported for authentication and encryption.

E.

WLAN controllers and APs must not support SSHv1.

Question 18

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?

Options:

A.

Man-in-the-middle

B.

Hijacking

C.

ASLEAP

D.

DoS

Question 19

What statement is true regarding the nonces (ANonce and SNonce) used in the IEEE 802.11 4 Way Handshake?

Options:

A.

Both nonces are used by the Supplicant and Authenticator in the derivation of a single PTK.

B.

The Supplicant uses the SNonce to derive its unique PTK and the Authenticator uses the ANonce to derive its unique PTK, but the nonces are not shared.

C.

Nonces are sent in EAPoL frames to indicate to the receiver that the sending station has installed and validated the encryption keys.

D.

The nonces are created by combining the MAC addresses of the Supplicant, Authenticator, and Authentication Server into a mixing algorithm.

Question 20

Which one of the following describes the correct hierarchy of 802.1X authentication key derivation?

Options:

A.

The MSK is generated from the 802.1X/EAP authentication. The PMK is derived from the MSK. The PTK is derived from the PMK, and the keys used for actual data encryption are a part of the PTK.

B.

If passphrase-based client authentication is used by the EAP type, the PMK is mapped directly from the user’s passphrase. The PMK is then used during the 4-way handshake to create data encryption keys.

C.

After successful EAP authentication, the RADIUS server generates a PMK. A separate key, the MSK, is derived from the AAA key and is hashed with the PMK to create the PTK and GTK.

D.

The PMK is generated from a successful mutual EAP authentication. When mutual authentication is not used, an MSK is created. Either of these two keys may be used to derive the temporal data encryption keys during the 4-way handshake.

Question 21

When using the 802.1X/EAP framework for authentication in 802.11 WLANs, why is the 802.1X Controlled Port still blocked after the 802.1X/EAP framework has completed successfully?

Options:

A.

The 802.1X Controlled Port is always blocked, but the Uncontrolled Port opens after the EAP authentication process completes.

B.

The 802.1X Controlled Port remains blocked until an IP address is requested and accepted by the Supplicant.

C.

The 4-Way Handshake must be performed before the 802.1X Controlled Port changes to the unblocked state.

D.

The 802.1X Controlled Port is blocked until Vender Specific Attributes (VSAs) are exchanged inside a RADIUS packet between the Authenticator and Authentication Server.

Question 22

Given: An 802.1X/EAP implementation includes an Active Directory domain controller running Windows Server 2012 and an AP from a major vendor. A Linux server is running RADIUS and it queries the domain controller for user credentials. A Windows client is accessing the network.

What device functions as the EAP Supplicant?

Options:

A.

Linux server

B.

Windows client

C.

Access point

D.

Windows server

E.

An unlisted switch

F.

An unlisted WLAN controller

Question 23

You must support a TSN as you have older wireless equipment that will not support the required processing of AES encryption. Which one of the following technologies will you use on the network so that a TSN can be implemented that would not be required in a network compliant with 802.11-2012 non-deprecated technologies?

Options:

A.

WEP

B.

RC4

C.

CCMP

D.

WPA2

Question 24

What protocols allow a network administrator to securely manage the configuration of WLAN controllers and access points? (Choose 2)

Options:

A.

SNMPv1

B.

HTTPS

C.

Telnet

D.

TFTP

E.

FTP

F.

SSHv2

Question 25

Given: Your network implements an 802.1X/EAP-based wireless security solution. A WLAN controller is installed and manages seven APs. FreeRADIUS is used for the RADIUS server and is installed on a dedicated server named SRV21. One example client is a MacBook Pro with 8 GB RAM.

What device functions as the 802.1X/EAP Authenticator?

Options:

A.

SRV21

B.

WLAN Controller/AP

C.

MacBook Pro

D.

RADIUS server

Question 26

Given: ABC Company has a WLAN controller using WPA2-Enterprise with PEAPv0/MS-CHAPv2 and AES-CCMP to secure their corporate wireless data. They wish to implement a guest WLAN for guest users to have Internet access, but want to implement some security controls. The security requirements for the hot-spot include:

    Cannot access corporate network resources

    Network permissions are limited to Internet access

    All stations must be authenticated

What security controls would you suggest? (Choose the single best answer.)

Options:

A.

Implement separate controllers for the corporate and guest WLANs.

B.

Use a WIPS to deauthenticate guest users when their station tries to associate with the corporate WLAN.

C.

Configure access control lists (ACLs) on the guest WLAN to control data types and destinations.

D.

Require guest users to authenticate via a captive portal HTTPS login page and place the guest WLAN and the corporate WLAN on different VLANs.

E.

Force all guest users to use a common VPN protocol to connect.

Question 27

Which one of the following is a valid reason to avoid the use of EAP-MD5 in production WLANs?

Options:

A.

It does not support the outer identity.

B.

It is not a valid EAP type.

C.

It does not support mutual authentication.

D.

It does not support a RADIUS server.

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Total 119 questions