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Security, Professional (JNCIP-SEC) Certification Sample Questions and Practice Exam
NEW QUESTION # 33
Which two statements are correct about the ICL in an active/active mode multinode HA environment?
(Choose two.)
- A. The ICL is the local device management interface in a multinode HA environment.
- B. The ICL traffic can be encrypted.
- C. The ICL is strictly a Layer 2 interface.
- D. The ICL uses a separate routing instance to communicate with remote multinode HA peers.
Answer: B,D
Explanation:
Explanation:
NEW QUESTION # 34
You want to bypass IDP for traffic destined to social media sites using APBR, but it is not working and IDP is dropping the session.
What are two reasons for this problem? (Choose two.)
- A. The APBR rule does a match on the first packet.
- B. The session did not properly reclassify midstream to the correct APBR rule.
- C. The application services bypass is not configured on the APBR rule.
- D. IDP disable is not configured on the APBR rule.
Answer: B,C
Explanation:
* Explanation of Answer A (Session Reclassification):
* APBR (Advanced Policy-Based Routing) requires the session to be classified based on the specified rule, which can change midstream as additional packets are processed. If the session was already established before the APBR rule took effect, the traffic may not be correctly reclassified to match the new APBR rule, leading to IDP (Intrusion Detection and Prevention) processing instead of being bypassed. This can occur especially when the session was already established before the rule change.
* Explanation of Answer C (Application Services Bypass):
* For APBR to work and bypass the IDP service, the application services bypass must be explicitly configured. Without this configuration, the APBR rule may redirect the traffic, but the IDP service will still inspect and potentially drop the traffic. This is especially important for traffic destined for specific sites like social media platforms where bypassing IDP is desired.
Example configuration for bypassing IDP services:
bash
set security forwarding-options advanced-policy-based-routing profile <profile-name> application-services- bypass Step-by-Step Resolution:
* Reclassify the Session Midstream:
* If the traffic was already being processed before the APBR rule was applied, ensure that the session is reclassified by terminating the current session or ensuring the APBR rule is applied from the start.
Command to clear the session:
bash
clear security flow session destination-prefix <ip-address>
* Configure Application Services Bypass:
* Ensure that the APBR rule includes the application services bypass configuration to properly bypass IDP or any other security services for traffic that should not be inspected.
Example configuration:
bash
set security forwarding-options advanced-policy-based-routing profile <profile-name> application-services- bypass Juniper Security Reference:
* Session Reclassification in APBR: APBR requires reclassification of sessions in real-time to ensure midstream packets are processed by the correct rule. This is crucial when policies change dynamically or new rules are added.
* Application Services Bypass in APBR: This feature ensures that security services such as IDP are bypassed for traffic that matches specific APBR rules. This is essential for applications where performance is a priority and security inspection is not necessary.
NEW QUESTION # 35
Exhibit:
You are troubleshooting a new IPsec VPN that is configured between your corporate office and the RemoteSite1 SRX Series device. The VPN is not currently establishing. The RemoteSite1 device is being assigned an IP address on its gateway interface using DHCP.
Which action will solve this problem?
- A. On both devices, change the IKE version to use version 2 only.
- B. On both devices, change the IKE policy mode to aggressive.
- C. On the RemoteSite1 device, change the IKE gateway external interface to st0.0.
- D. On both devices, change the IKE policy proposal set to basic.
Answer: B
Explanation:
Aggressive mode is required when an IP address is dynamically assigned, such as through DHCP, as it allows for faster establishment with less identity verification. More details are available in Juniper IKE and IPsec Configuration Guide.
The configuration shown in the exhibit highlights that theRemoteSite1SRX Series device is using DHCP to obtain an IP address for its external interface (ge-0/0/2). This introduces a challenge in IPsec VPN configurations when the public IP address of the remote site is not static, as is the case here.
Aggressive modein IKE (Internet Key Exchange) is designed for situations where one or both peers have dynamically assigned IP addresses. In this scenario,aggressive modeallows the devices to exchange identifying information, such as hostnames, rather than relying on static IP addresses, which is necessary when the remote peer (RemoteSite1) has a dynamic IP from DHCP.
* Correct Action (D): Changing the IKE policy mode toaggressivewill resolve the issue by allowing the two devices to establish the VPN even though one of them is using DHCP. In aggressive mode, the initiator can present its identity (hostname) during the initial handshake, enabling the VPN to be established successfully.
* Incorrect Options:
* Option A: Changing the external interface to st0.0 is incorrect because the st0 interface is used for the tunnel interface, not for the IKE negotiation.
* Option B: Changing to IKE version 2 would not resolve the dynamic IP issue directly, and IKEv1 works in this scenario.
* Option C: Changing the IKE proposal set to basic doesn't address the dynamic IP challenge in this scenario.
Juniper References:
* Juniper IKE and VPN Documentation: Provides details on when to use aggressive mode, especially when a dynamic IP address is involved.
NEW QUESTION # 36
You are using trace options to troubleshoot a security policy on your SRX Series device.
Referring to the exhibit, which two statements are true? (Choose two.)
- A. The security policy controls traffic destined to the SRX device.
- B. The traffic is not destined for the root logical system.
- C. The SSH traffic matches an existing session.
- D. No entries are created in the SRX session table.
Answer: A,C
NEW QUESTION # 37
Exhibit:
The Ipsec VPN does not establish when the peer initiates, but it does establish when the SRX series device initiates. Referring to the exhibit, what will solve this problem?
- A. The screen configuration on the untrust zone needs to be modified.
- B. IKE needs to be added to the host-inbound traffic directly on the ge-0/0/0 interface.
- C. Application tracking on the untrust zone needs to be removed.
- D. IKE needs to be added for the host-inbound traffic on the VPN zone.
Answer: B
NEW QUESTION # 38
Referring to the exhibit, which two statements are true ?
- A. The SRX is not sending any packets to the VPN peer.
- B. The SRX is sending traffic into the tunnel and out toward the VPN peer.
- C. Every VPN packet that the SRX receives from the VPN peer is outside the ESP sequence window
- D. The SRX is not receiving any packets from the VPN peer.
Answer: B,D
NEW QUESTION # 39
Exhibit
Referring to the exhibit, an internal host is sending traffic to an Internet host using the 203.0.113.1 reflexive address with source port 54311.
Which statement is correct in this situation?
- A. Only the Internet host that the internal host originally communicated with can initiate traffic to reach the internal host using the 203.0 113.1 address, a random source port, and destination port 54311.
- B. Any host on the Internet can initiate traffic to reach the internal host using the 203.0.113.1 address, source port 54311, and a random destination port.
- C. Any host on the Internet can initiate traffic to reach the internal host using the 203.0.113.1 address, a random source port, and destination port54311.
- D. Only the Internet host that the internal host originally communicated with can initiate traffic to reach the internal host using the 203.0.113.1 address, source port 54311, and a random destination port.
Answer: B
NEW QUESTION # 40
Exhibit:
Your company uses SRX Series devices to establish an IPsec VPN that connects Site-1 and the HQ networks. You want VoIP traffic to receive priority over data traffic when it is forwarded across the VPN.
Which three actions should you perform in this scenario? (Choose three.)
- A. Configure CoS forwarding classes and scheduling parameters.
- B. Create a firewall filter that identifies VoIP traffic and associates it with the correct forwarding class.
- C. Enable next-hop tunnel binding.
- D. Enable the multi-sa parameter to enable two separate IPsec SAs for the VoIP and data traffic.
- E. Enable the copy-outer-dscp parameter so that DSCP header values are copied to the tunneled packets.
Answer: A,B,D
NEW QUESTION # 41
Exhibit.
Referring to the exhibit, which two statements are true? (Choose two.)
- A. The configured solution allows IPv4 to IPv6 translation.
- B. External hosts cannot initiate contact.
- C. The IPv6 address is invalid.
- D. The configured solution allows IPv6 to IPv4 translation.
Answer: C,D
NEW QUESTION # 42
What are three attributes that APBR queries from the application system cache module. (Choose Three)
- A. protocol type
- B. DSCP
- C. TTL
- D. service
- E. destination port
Answer: A,D,E
NEW QUESTION # 43
Exhibit
Referring to the exhibit, which statement is true?
- A. This custom block list feed will be used before the Juniper Seclntel
- B. This custom block list feed will be used instead of the Juniper Seclntel block list feed
- C. This custom block list feed cannot be saved if the Juniper Seclntel block list feed is configured.
- D. This custom block list feed will be used after the Juniper Seclntel block list feed.
Answer: D
NEW QUESTION # 44
Your customer needs embedded security in an EVPN-VXLAN solution.
What are two benefits of adding an SRX Series device in this scenario? (Choose two.)
- A. It adds extra security with the capabilities of an enterprise-grade firewall in the EVPN-VXLAN overlay.
- B. It enhances tunnel inspection for VXLAN encapsulated traffic with Layer 4-7 security services.
- C. It adds extra security with the capabilities of an enterprise-grade firewall in the EVPN-VXLAN underlay.
- D. It enhances tunnel inspection for VXLAN encapsulated traffic with only Layer 4 security services.
Answer: A,B
Explanation:
The SRX Series can inspect traffic within VXLAN tunnels, providing in-depth security services across multiple layers. Adding SRX in the overlay network allows comprehensive control, leveraging advanced firewall capabilities. For more details, see Juniper EVPN-VXLAN Security.
When integrating an SRX Series device into anEVPN-VXLANsolution, it offers several security benefits:
* Layer 4-7 Security Services (Answer A): The SRX can providedeep packet inspectionfor VXLAN encapsulated traffic, enhancing security by offering services such as intrusion prevention, application layer filtering, and antivirus scanning. This allows security monitoring of the encapsulated traffic at higher layers of the OSI model (Layers 4-7), which is essential for advanced threat detection.
* Security in the Overlay Network (Answer C): The SRX adds security by functioning as an enterprise- grade firewall within theEVPN-VXLAN overlay. This means that traffic flowing between virtualized segments or networks can be inspected and filtered using SRX firewall rules, ensuring that the VXLAN overlay remains secure.
These features make the SRX a powerful addition for securing EVPN-VXLAN environments, providing comprehensive security for encapsulated traffic and ensuring that both the underlay and overlay networks are protected.
NEW QUESTION # 45
Referring to the exhibit, you are assigned the tenantSYS1 user credentials on an SRX series device.
In this scenario, which two statements are correct? (Choose two.)
- A. When you log in to the device, you will be permitted to view only the routing tables for the Tenant SYS1 logical system.
- B. When you log in to the device, you will be permitted to view all routing tables available on the on an SYS1 Series device.
- C. When you log in to the device, you will be located at the operational mode of the main system hierarchy.
- D. When you log in to the device, you will be located at the operational mode of the Tenant.SY51 logical system hierarchy.
Answer: A,D
NEW QUESTION # 46
Exhibit:
You are configuring NAT64 on your SRX Series device. You have committed the configuration shown in the exhibit. Unfortunately, the communication with the 10.10.201.10 server is not working. You have verified that the interfaces, security zones, and security policies are all correctly configured.
In this scenario, which action will solve this issue?
- A. Configure destination NAT to translate return traffic from the IPv4 address to the IPv6 address of your source device.
- B. Configure source NAT to translate return traffic from IPv4 address to the IPv6 address of your source device.
- C. Configure proxy-ARP on the external IPv4 interface for the 10.10.201.10/32 address.
- D. Configure proxy-NDP on the IPv6 interface for the 2001:db8::1/128 address.
Answer: B
Explanation:
In the scenario described, you are configuring NAT64, which allows communication between IPv6 and IPv4 networks by translating IPv6 packets to IPv4 and vice versa. The configuration in the exhibit shows an attempt to translate traffic coming from the IPv6 address 2001:db8::1/128 and destined for the IPv4 address
10.10.201.10/32.
However, the issue here is related to the return traffic. For NAT64 to function correctly, you must ensure that the return traffic (from the IPv4 network) is translated back to the original IPv6 source address. Without proper translation of the return traffic, the communication will not be successful. In this case, you needsource NATto handle the return traffic correctly.
Detailed Solution:
* In NAT64, when traffic originates from an IPv6 network and is translated to IPv4, the return traffic from the IPv4 network must be translated back to the original IPv6 address usingsource NAT.
* The source NAT configuration must include translation for the return path from IPv4 to IPv6 to ensure bidirectional communication.
Configuration Example:
To resolve the issue, you can configure source NAT on the SRX device to handle the translation of the return traffic as follows:
* Configure Source NAT for Return Traffic:You need to configure source NAT on the interface handling the return traffic. This will translate the IPv4 address back to the IPv6 source address.
Example:
bash
Copy code
set security nat source rule-set ipv4-source-rule from zone untrust
set security nat source rule-set ipv4-source-rule to zone trust
set security nat source rule-set ipv4-source-rule rule source-nat-translation match source-address 10.10.201.10
/32
set security nat source rule-set ipv4-source-rule rule source-nat-translation then source-nat pool ipv6-source- pool
* Ensure Proper Routing and Security Policy Configuration:Make sure that both the IPv4 and IPv6 routes are correctly defined, and that security policies are allowing the return traffic through.
Use the following commands to verify the NAT and policy configurations:
bash
Copy code
show security nat source
show security policies
By configuring source NAT to translate the return traffic back to IPv6, the communication between the IPv6 host and the IPv4 server should now work correctly.
Juniper Security Reference:
* NAT64 Overview: This functionality allows IPv6 clients to communicate with IPv4-only servers. For successful translation, NAT64 requires both source NAT and destination NAT to handle the bidirectional traffic. Reference: Juniper Networks Documentation on NAT64.
NEW QUESTION # 47
Exhibit:
Referring to the exhibit, which IKE mode will be configured on the HQ-Gateway and Subsidiary-Gateway?
- A. Main mode on the HQ-Gateway and aggressive mode on the Subsidiary-Gateway
- B. Main mode on both the gateways
- C. Aggressive mode on both the gateways
- D. Aggressive mode on the HQ-Gateway and main mode on the Subsidiary-Gateway
Answer: A
Explanation:
Referring to the exhibit, we can see that theHQ-Gatewayhas a static IP address (203.0.113.5), while the Subsidiary-Gatewayhas a dynamic IP address (203.0.113.10). This difference in IP addressing is crucial in determining the correct IKE mode configuration.
* Main Mode for Static IP (HQ-Gateway):Main modeis typically used when both VPN peers have static IP addresses. Main mode provides more security because it completes the IKE negotiation in six messages, hiding the identity of the participants until the key exchange occurs. Since the HQ-Gateway has a static IP address, main mode is appropriate here.
* Aggressive Mode for Dynamic IP (Subsidiary-Gateway):Aggressive modeis used when one or both VPN peers have dynamic IP addresses. In this mode, the initiator (Subsidiary-Gateway in this case) can present its identity in the first message, which is necessary because the dynamic IP may not be known ahead of time. This allows the negotiation to complete more quickly with fewer messages. Hence, aggressive mode is the correct choice for the Subsidiary-Gateway.
* Correct Answer (C): Main mode on the HQ-Gateway and aggressive mode on the Subsidiary- Gateway, because the Subsidiary-Gateway has a dynamic IP, while the HQ-Gateway has a static IP.
Juniper References:
* Juniper IKE Documentation: Provides details on when to use main mode versus aggressivemode in IPsec VPN configurations based on the static or dynamic nature of IP addresses.
NEW QUESTION # 48
Exhibit
Which statement is true about the output shown in the exhibit?
- A. The SRX Series device is configured to disable IPv6 packet forwarding.
- B. The SRX Series device is configured with packet-based IPv6 forwarding options.
- C. The SRX Series device is configured with flow-based IPv6 forwarding options.
- D. The SRX Series device is configured with default security forwarding options.
Answer: D
NEW QUESTION # 49
Click the Exhibit button.
You have configured a CoS-based VPN that is not functioning correctly.
Referring to the exhibit, which action will solve the problem?
- A. You must change the loss priorities of the forwarding classes to low.
- B. You must change the code point for the DB-data forwarding class to 10000.
- C. You must use inet precedence instead of DSCP.
- D. You must delete one forwarding class.
Answer: D
Explanation:
Comprehensive Detailed Step-by-Step Explanation with All Juniper Security References Understanding the Problem:
* A CoS-based VPN has been configured but is not functioning correctly.
* The exhibit shows that under the class-of-service configuration, six forwarding classes are defined.
Forwarding Classes in the Exhibit:
* best-effort
* ef-class
* af-class
* network-control
* res-class
* web-data
Juniper CoS-Based VPN Limitations:
* Maximum Number of Forwarding Classes: In CoS-based VPNs (Layer 3 VPNs), there is a limitation on the number of forwarding classes that can be used.
* Supported Forwarding Classes: Only up to four forwarding classes are supported in an L3VPN for CoS purposes.
NEW QUESTION # 50
Exhibit:
Referring to the exhibit, the operator user is unable to save configuration files to a usb stick the is plugged into SRX.
What should you do to solve this problem?
- A. Add the floppy permission flag to the operations class
- B. Add the system permission flag to the operation class
- C. Add the system-control permission flag to the operation class
- D. Add the interface-control permission flag to the operation class
Answer: C
Explanation:
To solve the problem of the operator user being unable to save configuration files to a USB stick that is plugged into SRX, you need to add the system-control permission flag to the operations class.
The other options are incorrect because:
A) Adding the floppy permission flag to the operations class is not sufficient or necessary to save configuration files to a USB stick. The floppy permission flag allows the user to access the floppy drive, but not the USB drive. The USB drive is accessed by the system permission flag, which is already included in the operations class1.
C) Adding the interface-control permission flag to the operations class is also not sufficient or necessary to save configuration files to a USB stick. The interface-control permission flag allows the user to configure and monitor interfaces, but not to save configuration files. The configuration permission flag, which is also already included in the operations class, allows the user to save configuration files1.
D) Adding the system permission flag to the operations class is redundant and ineffective to save configuration files to a USB stick. The system permission flag allows the user to access the system directory, which includes the USB drive. However, the operations class already has the system permission flag by default1. The problem is not the lack of system permission, but the lack of system- control permission.
Therefore, the correct answer is B. You need to add the system-control permission flag to the operations class to solve the problem. The system-control permission flag allows the user to perform system-level operations, such as rebooting, halting, or snapshotting the device1. These operations are required to mount, unmount, and copy files to and from the USB drive2. To add the system-control permission flag to the operations class, you need to perform the following steps:
Enter the configuration mode: user@host> configure
Navigate to the system login class hierarchy: user@host# edit system login class operations Add the system-control permission flag: user@host# set permissions system-control Commit the changes: user@host# commit Reference: login (System) How to mount a USB drive on EX/SRX/MX/QFX Series platforms to import/export files
NEW QUESTION # 51
You are asked to establish IBGP between two nodes, but the session is not established. To troubleshoot this problem, you configured trace options to monitor BGP protocol message exchanges.
Referring to the exhibit, which action would solve the problem?
- A. Add a firewall filter to lo0 that permits the BGP packets.
- B. Add BGP to the lo0 host-inbound-traffic configuration.
- C. Add the junos-host zone policy to permit the BGP packets.
- D. Modify the security policy to permit the BGP packets.
Answer: B
Explanation:
Explanation:
NEW QUESTION # 52
You are asked to detect domain generation algorithms
Which two steps will accomplish this goal on an SRX Series firewall? (Choose two.)
- A. Attach the advanced-anti-malware policy to a security policy.
- B. Define an advanced-anti-malware policy under [edit services].
- C. Define a security-metadata-streaming policy under [edit
- D. Attach the security-metadata-streaming policy to a security
Answer: A,B
NEW QUESTION # 53
The SRX series device is performing static NAT. you want to ensure that host A can reach the internal webserver www.juniper.net using domain name.
Referring to the exhibit, which two Junos features are required to accomplish this task? (Choose two.)
- A. proxy ARP
- B. persistent NAT
- C. DNS doctoring
- D. STUN
Answer: A,C
NEW QUESTION # 54
Exhibit:
Referring to the exhibit, which two statements are true? (Choose two.)
- A. Hosts in the Local zone can communicate with hosts in the Trust zone with a security policy.
- B. You can configure security policies for traffic flows between hosts in the Local zone.
- C. Hosts in the Local zone can be enabled for control plane access to the SRX.
- D. An IRB interface is required to enable communication between the Trust and the Untrust zones.
Answer: A,C
Explanation:
Explanation:
NEW QUESTION # 55
you configured a security policy permitting traffic from the trust zone to the untrust zone but your traffic not hitting the policy.
In this scenario, which cli command allows you to troubleshoot traffic problem using the match criteria?
- A. show security match-policies
- B. show security application-tracking counters
- C. show security policy-report
- D. request security policies check
Answer: A
Explanation:
To troubleshoot the traffic problem using the match criteria, you need to use the show security match- policies CLI command.
The other options are incorrect because:
A) The show security policy-report CLI command displays the policy report, which is a summary of the policy usage statistics, such as the number of sessions, bytes, and packets that match each policy. It does not show the match criteria or the reason why the traffic is not hitting the policy1.
B) The show security application-tracking counters CLI command displays the application tracking counters, which are the statistics of the application usage, such as the number of sessions, bytes, and packets that match each application. It does not show the match criteria or the reason why the traffic is not hitting the policy2.
D) The request security policies check CLI command checks the validity and consistency of the security policies, such as the syntax, the references, and the conflicts. It does not show the match criteria or the reason why the traffic is not hitting the policy3.
Therefore, the correct answer is C. You need to use the show security match-policies CLI command to troubleshoot the traffic problem using the match criteria. The show security match-policies CLI command displays the policies that match the specified criteria, such as the source and destination addresses, the zones, the protocols, and the ports. It also shows the action and the hit count of each matching policy.
You can use this command to verify if the traffic is matching the expected policy or not, and if not, what policy is blocking or rejecting the traffic4
NEW QUESTION # 56
Exhibit.
Referring to the exhibit, a spoke member of an ADVPN is not functioning correctly.
Which two commands will solve this problem? (Choose two.)
- A. [edit security ike gateway advpn-gateway]
user@srx# delete advpn partner - B. [edit security ike gateway advpn-gateway]
user@srx# set version v1-only - C. [edit interfaces]
user@srx# delete st0.0 multipoint - D. [edit security ike gateway advpn-gateway]
user@srx# set advpn suggester disable
Answer: A,D
NEW QUESTION # 57
You are connecting two remote sites to your corporate headquarters site; you must ensure that all traffic is secured and only uses a single Phase 2 SA for both sites.
In this scenario, which VPN should be used?
- A. Full mesh IPsec VPNs with tunnels between all sites.
- B. An IPsec group VPN with the corporate firewall acting as the hub device.
- C. A full mesh Layer 3 VPN with the corporate firewall acting as the hub device.
- D. A hub-and-spoke IPsec VPN with the corporate firewall acting as the hub device.
Answer: B
Explanation:
https://www.juniper.net/us/en/local/pdf/app-notes/3500202-en.pdf
NEW QUESTION # 58
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