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CWNP CWSP-208 Exam | CWSP-208実際試験 -サンプルダウンロードCWSP-208資格認定試験
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CWNP CWSP-208 認定試験の出題範囲:
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CWSP-208試験の準備方法|100%合格率のCWSP-208実際試験試験|素晴らしいCertified Wireless Security Professional (CWSP)資格認定試験
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CWNP Certified Wireless Security Professional (CWSP) 認定 CWSP-208 試験問題 (Q99-Q104):
質問 # 99
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. 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.
- C. 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.
- D. 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.
- E. 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.
正解:C
解説:
In this scenario, although the bank's website uses HTTPS (which encrypts communications between John's browser and the bank's server), the compromise did not occur during the banking session itself. Instead, the attacker exploited a common security mistake: credential reuse.
John reused his email credentials for his bank login, and he accessed his email using a POP3 client without encryption at a public hotspot. This means his username and password were sent in cleartext, which is trivially easy to sniff on an open wireless network. Once an attacker obtained those credentials, they could use them to log into his bank account if the same credentials were used there.
Here's how this aligns with CWSP knowledge domains:
* CWSP Security Threats & Attacks: This is a classic example of credential harvesting via cleartext protocols (POP3), and password reuse, both of which are significant risks in WLAN environments.
* CWSP Secure Network Design: Recommends use of encrypted protocols (e.g., POP3S or IMAPS) and user education against password reuse.
* CWSP WLAN Security Fundamentals: Emphasizes that open Wi-Fi networks offer no encryption by default, leaving unprotected protocols vulnerable to sniffing and interception.
Other answer options and why they are incorrect:
* A & D are invalid because an expired or unsigned certificate may cause browser warnings but won't result in sending credentials unencrypted unless the user bypasses HTTPS (which wasn't stated).
* C is incorrect: IPSec VPNs encrypt all data between the client and VPN endpoint-including credentials.
* E is technically incorrect and misleading: intercepting the public key of an HTTPS session doesn't allow decryption of the credentials due to asymmetric encryption and session key security. Real-time decryption of HTTPS traffic without endpoint compromise is not feasible.
References:
CWSP-208 Study Guide, Chapters 3 (Security Policy) and 5 (Threats and Attacks) CWNP CWSP-208 Official Study Guide CWNP Exam Objectives - WLAN Authentication, Encryption, and VPNs CWNP Whitepapers on WLAN Security Practices
質問 # 100
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?
- A. Require VPN software for connectivity to the corporate network.
- B. Require Port Address Translation (PAT) on each laptop.
- C. Require WPA2-Enterprise as the minimal WLAN security solution.
- D. Require secure applications such as POP, HTTP, and SSH.
正解:A
解説:
EAP-TLS requires both server and client-side digital certificates, which adds complexity in client certificate management.
EAP-TTLS uses a server certificate to establish a secure TLS tunnel, after which user credentials (e.g., username/password) are sent inside the encrypted tunnel. No client certificate is needed.
Incorrect:
A). EAP-TLS also encrypts credentials using TLS.
B). EAP-TLS supports client certificates (it's the core requirement).
C). Both EAP methods require an authentication server.
References:
CWSP-208 Study Guide, Chapter 4 (EAP Methods Comparison)
CWNP EAP-TTLS Deployment Guide
質問 # 101
Given: XYZ Company has recently installed an 802.11ac WLAN. The company needs the ability to control access to network services, such as file shares, intranet web servers, and Internet access based on an employee's job responsibilities.
What WLAN security solution meets this requirement?
- A. WPA2-Personal with support for LDAP queries
- B. A WLAN router with wireless VLAN support
- C. An autonomous AP system with MAC filters
- D. A VPN server with multiple DHCP scopes
- E. A WLAN controller with RBAC features
正解:E
解説:
Role-Based Access Control (RBAC) enables dynamic assignment of permissions and access rights based on a user's job function. A WLAN controller with RBAC:
Can apply policies post-authentication.
Controls access to internal services (e.g., file shares, apps).
Assigns users to different VLANs or applies firewall rules based on roles.
Incorrect:
A). MAC filtering is not scalable or secure.
B). WPA2-Personal does not support user-based policies or LDAP integration.
C). DHCP scope assignment is not linked to user roles.
E). VLAN assignment via SSID is static and does not consider job function.
References:
CWSP-208 Study Guide, Chapter 6 (Access Control and Role-Based Policies) CWNP Enterprise WLAN Design Practices
質問 # 102
Given: ABC Company is an Internet Service Provider with thousands of customers. ABC's customers are given login credentials for network access when they become a customer. ABC uses an LDAP server as the central user credential database. ABC is extending their service to existing customers in some public access areas and would like to use their existing database for authentication.
How can ABC Company use their existing user database for wireless user authentication as they implement a large-scale WPA2-Enterprise WLAN security solution?
- A. Mirror the LDAP server to a RADIUS database within a WLAN controller and perform daily backups to synchronize the user databases.
- B. Implement a RADIUS server and query user authentication requests through the LDAP server.
- C. Import all users from the LDAP server into a RADIUS server with an LDAP-to-RADIUS conversion tool.
- D. Implement an X.509 compliant Certificate Authority and enable SSL queries on the LDAP server.
正解:B
解説:
To leverage an existing LDAP user database (like Microsoft Active Directory or OpenLDAP) for WPA2- Enterprise:
Deploy a RADIUS server (e.g., FreeRADIUS or Microsoft NPS).
Configure the RADIUS server to query the LDAP directory for credential validation.
This maintains centralized authentication without the need for data duplication.
Incorrect:
A). Importing LDAP entries into RADIUS introduces sync and security issues.
B). SSL on LDAP is good practice, but it doesn't directly handle WPA2-Enterprise authentication.
C). Mirroring LDAP into the controller is not scalable or supported.
References:
CWSP-208 Study Guide, Chapter 4 (LDAP Integration with RADIUS)
CWNP RADIUS Authentication Architecture
質問 # 103
Given: A WLAN consultant has just finished installing a WLAN controller with 15 controller-based APs.
Two SSIDs with separate VLANs are configured for this network, and both VLANs are configured to use the same RADIUS server. The SSIDs are configured as follows:
SSID Blue - VLAN 10 - Lightweight EAP (LEAP) authentication - CCMP cipher suite SSID Red - VLAN 20 - PEAPv0/EAP-TLS authentication - TKIP cipher suite The consultant's computer can successfully authenticate and browse the Internet when using the Blue SSID.
The same computer cannot authenticate when using the Red SSID.
What is a possible cause of the problem?
- A. The consultant does not have a valid Kerberos ID on the Blue VLAN.
- B. The TKIP cipher suite is not a valid option for PEAPv0 authentication.
- C. The Red VLAN does not use server certificate, but the client requires one.
- D. The client does not have a proper certificate installed for the tunneled authentication within the established TLS tunnel.
正解:D
解説:
PEAPv0/EAP-TLS is a tunneled EAP method that requires:
The server to present a certificate for TLS tunnel establishment.
The client to present a valid client certificate within the tunnel (in the case of EAP-TLS).
If the client does not have a valid X.509 certificate installed, authentication will fail.
Incorrect:
A). The server certificate is required for the TLS tunnel, and it is typically present; the issue here lies with the client cert.
B). TKIP is technically compatible with PEAPv0, although AES-CCMP is preferred.
D). Kerberos is unrelated to EAP authentication and VLAN use.
References:
CWSP-208 Study Guide, Chapter 4 (PEAP and EAP-TLS Authentication)
IEEE 802.1X and TLS Frameworks
質問 # 104
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