Online Access Free PaloAltoNetworks.PCNSE.v2023-07-21.q125 Practice Test (Page 6)

PCNSE Exam Question 21

An administrator has purchased WildFire subscriptions for 90 firewalls globally.
What should the administrator consider with regards to the WildFire infra-structure?

A.To comply with data privacy regulations, WildFire signatures and ver-dicts are not shared globally.

B.Palo Alto Networks owns and maintains one global cloud and four WildFire regional clouds.

C.Each WildFire cloud analyzes samples and generates malware signatures and verdicts independently of the other WildFire clouds.

D.The WildFire Global Cloud only provides bare metal analysis.

PCNSE Exam Question 22

A network engineer is troubleshooting a VPN and wants to verify whether the decapsulation/encapsulation counters are increasing. Which CLI command should the engineer run?

A.Show vpn tunnel name | match encap

B.Show vpn flow name <tunnel name>

C.Show running tunnel flow lookup

D.Show vpn ipsec-sa tunnel <tunnel name>

PCNSE Exam Question 23

After implementing a new NGFW, a firewall engineer sees a VoIP traffic issue going through the firewall After troubleshooting the engineer finds that the firewall performs NAT on the voice packets payload and opens dynamic pinholes for media ports What can the engineer do to solve the VoIP traffic issue?

A.Disable ALG under H.323 application

B.Increase the TCP timeout under H.323 application

C.Increase the TCP timeout under SIP application

D.Disable ALG under SIP application

Correct Answer: D

Explanation
According to the Palo Alto Networks documentation1, application-level gateway (ALG) is a feature that allows the firewall to inspect and modify the payload of some protocols, such as SIP, to enable NAT traversal and firewall policy enforcement. However, ALG can also cause issues with some VoIP implementations, such as modifying the SIP headers incorrectly or opening unnecessary pinholes for media ports. Therefore, disabling ALG under SIP application can help solve the VoIP traffic issue by preventing the firewall from altering the voice packets payload and opening dynamic pinholes2. Therefore, the correct answer is D.
The other options are not relevant or helpful for solving the VoIP traffic issue:
Disable ALG under H.323 application: This option would disable ALG for H.323 protocol, which is another VoIP protocol, but not the one used in this scenario. The scenario mentions SIP as the signaling protocol, so disabling ALG under H.323 application would have no effect on the VoIP traffic issue.
Increase the TCP timeout under H.323 application: This option would increase the TCP timeout for
H.323 protocol, which is another VoIP protocol, but not the one used in this scenario. The scenario mentions SIP as the signaling protocol, which uses UDP by default, so increasing the TCP timeout under H.323 application would have no effect on the VoIP traffic issue.
Increase the TCP timeout under SIP application: This option would increase the TCP timeout for SIP protocol, which is the signaling protocol used in this scenario. However, SIP uses UDP by default, so increasing the TCP timeout would have no effect on the VoIP traffic issue. Moreover, increasing the TCP timeout would not address the problem of NAT on the voice packets payload and dynamic pinholes for media ports.
References: 1:
https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-admin/app-id/disable-the-sip-application-level-gateway-alg
2: https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000ClEsCAK

PCNSE Exam Question 24

A network security engineer has applied a File Blocking profile to a rule with the action of Block. The user of a Linux CLI operating system has opened a ticket. The ticket states that the user is being blocked by the firewall when trying to download a TAR file. The user is getting no error response on the system.
Where is the best place to validate if the firewall is blocking the user's TAR file?

A.URL Filtering log

B.Data Filtering log

C.Threat log

D.WildFire Submissions log

PCNSE Exam Question 25

Which three items are import considerations during SD-WAN configuration planning? (Choose three.)

A.link requirements

B.the name of the ISP

C.IP Addresses

D.branch and hub locations

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PCNSE Exam Question 21

PCNSE Exam Question 22

PCNSE Exam Question 23

PCNSE Exam Question 24

PCNSE Exam Question 25

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