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HP HPE6-A78權威考題 - HPE6-A78更新
此外，這些VCESoft HPE6-A78考試題庫的部分內容現在是免費的：https://drive.google.com/open?id=15HAjZ6AKDWf_PxnX1JUTh6VC2Zk5i27h
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更新的HPE6-A78權威考題＆保證HP HPE6-A78考試成功，準備充分的HPE6-A78更新
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HP HPE6-A78 （Aruba 認證網絡安全副專業）認證考試是一個專業認證，驗證了使用 Aruba 產品為無線和有線網絡配置和管理安全解決方案所需的技能和知識。該認證非常適合希望在網絡安全領域發展職業生涯並展示自己專業知識的網絡安全專業人士。
HP HPE6-A78 考試大綱：
主題
簡介
主題 1
主題 2
主題 3
主題 4
主題 5
最新的 Aruba ACNSA HPE6-A78 免費考試真題 (Q50-Q55):
問題 #50
You have an HPE Aruba Networking Mobility Controller (MC) that is locked in a closet. What is another step that HPE Aruba Networking recommends to protect the MC from unauthorized access?
答案：A
解題說明：
The scenario involves an HPE Aruba Networking Mobility Controller (MC) that is physically secured in a locked closet, which provides protection against physical tampering. However, additional steps are needed to protect the MC from unauthorized access, particularly through administrative interfaces (e.g., SSH, web UI, console).
Option A, "Set the local admin password to a long random value that is unknown or locked up securely," is correct. HPE Aruba Networking recommends securing administrative access to the MC by setting a strong, random password for the local admin account (e.g., the default "admin" user). The password should be long (e.g., 16+ characters), random, and stored securely (e.g., in a password manager or safe). This ensures that even if an attacker gains physical access to the MC (e.g., by bypassing the locked closet) or attempts remote access, they cannot easily guess or brute-force the password.
Option B, "Disable local authentication of administrators entirely," is incorrect. Disabling local authentication entirely would prevent any fallback access to the MC if external authentication (e.g., RADIUS, TACACS+) fails. HPE Aruba Networking recommends maintaining a local admin account as a backup, but securing it with a strong password.
Option C, "Change the password recovery password," is incorrect. AOS-8 Mobility Controllers do not have a specific "password recovery password." Password recovery typically involves physical access to the device (e.g., via the console port) and a factory reset, which would be mitigated by the locked closet. This option is not a standard recommendation for securing the MC.
Option D, "Use local authentication rather than external authentication to authenticate admins," is incorrect. HPE Aruba Networking recommends using external authentication (e.g., RADIUS or TACACS+) for centralized management and stronger security (e.g., two-factor authentication). Local authentication should be a fallback, not the primary method, and it must be secured with a strong password.
The HPE Aruba Networking AOS-8 8.11 User Guide states:
"To protect the Mobility Controller from unauthorized access, even if it is physically secured in a locked closet, set the local admin password to a long, random value that is unknown or locked up securely. For example, use a password of at least 16 characters generated by a password manager, and store it in a secure location (e.g., a safe). This ensures that the local admin account, which is used as a fallback, is protected against unauthorized access attempts." (Page 385, Securing Administrative Access Section) Additionally, the HPE Aruba Networking Security Best Practices Guide notes:
"A recommended step to secure the Mobility Controller is to set a strong, random password for the local admin account. The password should be long (e.g., 16+ characters), randomly generated, and stored securely to prevent unauthorized access, even if the device is physically protected in a locked closet." (Page 28, Administrative Security Section)
:
HPE Aruba Networking AOS-8 8.11 User Guide, Securing Administrative Access Section, Page 385.
HPE Aruba Networking Security Best Practices Guide, Administrative Security Section, Page 28.
問題 #51
What are the roles of 802.1X authenticators and authentication servers?
答案：C
解題說明：
In the 802.1X network access control model, the roles of the authenticator and the authentication server are distinct yet complementary. The authenticator acts as a RADIUS client, which is a network device, like a switch or wireless access point, that directly interfaces with the client machine (supplicant). The authentication server, typically a RADIUS server, is responsible for verifying the credentials provided by the supplicant through the authenticator. This setup helps in separating the duties where the authenticator enforces authentication but does not decide on the validity of the credentials, which is the role of the authentication server.References:
IEEE 802.1X standard for network access control.
問題 #52
What is one way that WPA3-Enterprise enhances security when compared to WPA2-Enterprise?
答案：D
解題說明：
WPA3-Enterprise enhances network security over WPA2-Enterprise through several improvements, one of which is the ability to operate in CNSA (Commercial National Security Algorithm) mode. This mode mandates the use of secure cryptographic algorithms during the 802.11 association process, ensuring that all communications are highly secure. The CNSA suite provides stronger encryption standards designed to protect sensitive government, military, and industrial communications. Unlike WPA2, WPA3's CNSA mode uses stronger cryptographic primitives, such as AES-256 in Galois/Counter Mode (GCM) for encryption and SHA-384 for hashing, which are not standard in WPA2-Enterprise.
問題 #53
What is a benefit or using network aliases in ArubaOS firewall policies?
答案：C
解題說明：
In ArubaOS firewall policies, using network aliases allows administrators to manage groups of IP addresses more efficiently. By associating multiple IPs with a single alias, any changes made to the alias (like adding or removing IP addresses) are automatically reflected in all firewall rules that reference that alias. This significantly simplifies the management of complex rulesets and ensures consistency across security policies, reducing administrative overhead and minimizing the risk of errors.
問題 #54
A client has accessed an HTTPS server at myhost1.example.com using Chrome. The server sends a certificate that includes these properties:
Subject name: myhost.example.com
SAN: DNS: myhost.example.com; DNS: myhost1.example.com
Extended Key Usage (EKU): Server authentication
Issuer: MyCA_Signing
The server also sends an intermediate CA certificate for MyCA_Signing, which is signed by MyCA. The client's Trusted CA Certificate list does not include the MyCA or MyCA_Signing certificates.
Which factor or factors prevent the client from trusting the certificate?
答案：A
解題說明：
When a client (e.g., a Chrome browser) accesses an HTTPS server, the server presents a certificate to establish a secure connection. The client must validate the certificate to trust the server. The certificate in this scenario has the following properties:
Subject name: myhost.example.com
SAN (Subject Alternative Name): DNS: myhost.example.com; DNS: myhost1.example.com Extended Key Usage (EKU): Server authentication Issuer: MyCA_Signing (an intermediate CA) The server also sends an intermediate CA certificate for MyCA_Signing, signed by MyCA (the root CA).
The client's Trusted CA Certificate list does not include MyCA or MyCA_Signing.
Certificate Validation Process:
Name Validation: The client checks if the server's hostname (myhost1.example.com) matches the Subject name or a SAN in the certificate. Here, the SAN includes "myhost1.example.com," so the name validation passes.
EKU Validation: The client verifies that the certificate's EKU includes "Server authentication," which is required for HTTPS. The EKU is correctly set to "Server authentication," so this validation passes.
Chain of Trust Validation: The client builds a certificate chain from the server's certificate to a trusted root CA in its Trusted CA Certificate list. The chain is:
Server certificate (issued by MyCA_Signing)
Intermediate CA certificate (MyCA_Signing, issued by MyCA)
Root CA certificate (MyCA, which should be in the client's trust store) The client's Trusted CA Certificate list does not include MyCA or MyCA_Signing, meaning the client cannot build a chain to a trusted root CA. This causes the validation to fail.
Option A, "The client does not have the correct trusted CA certificates," is correct. The client's trust store must include the root CA (MyCA) to trust the certificate chain. Since MyCA is not in the client's Trusted CA Certificate list, the client cannot validate the chain, and the certificate is not trusted.
Option B, "The certificate lacks a valid SAN," is incorrect. The SAN includes "myhost1.example.com," which matches the server's hostname, so the SAN is valid.
Option C, "The certificate lacks the correct EKU," is incorrect. The EKU is set to "Server authentication," which is appropriate for HTTPS.
Option D, "The certificate lacks a valid SAN, and the client does not have the correct trusted CA certificates," is incorrect because the SAN is valid, as explained above. The only issue is the missing trusted CA certificates.
The HPE Aruba Networking AOS-CX 10.12 Security Guide states:
"For a client to trust a server's certificate during HTTPS communication, the client must validate the certificate chain to a trusted root CA in its trust store. If the root CA (e.g., MyCA) or intermediate CA (e.g., MyCA_Signing) is not in the client's Trusted CA Certificate list, the chain of trust cannot be established, and the client will reject the certificate. The Subject Alternative Name (SAN) must include the server's hostname, and the Extended Key Usage (EKU) must include 'Server authentication' for HTTPS." (Page 205, Certificate Validation Section) Additionally, the HPE Aruba Networking Security Fundamentals Guide notes:
"A common reason for certificate validation failure is the absence of the root CA certificate in the client's trust store. For example, if a server's certificate is issued by an intermediate CA (e.g., MyCA_Signing) that chains to a root CA (e.g., MyCA), the client must have the root CA certificate in its Trusted CA Certificate list to trust the chain." (Page 45, Certificate Trust Issues Section)
:
HPE Aruba Networking AOS-CX 10.12 Security Guide, Certificate Validation Section, Page 205.
HPE Aruba Networking Security Fundamentals Guide, Certificate Trust Issues Section, Page 45.
問題 #55
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HPE6-A78更新: https://www.vcesoft.com/HPE6-A78-pdf.html
此外，這些VCESoft HPE6-A78考試題庫的部分內容現在是免費的：https://drive.google.com/open?id=15HAjZ6AKDWf_PxnX1JUTh6VC2Zk5i27h