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NEW QUESTION # 67
Which two statements are correct about security zones on an SRX Series device? (Choose two.)

• A. Security zones can be shared between routing instances.
• B. Multiple security zones cannot be configured on an SRX Series device.
• C. Security zones cannot be shared between routing instances.
• D. Intrazone and interzone traffic both require security policies.

Answer: C,D

Explanation:
Security zones cannot be shared between routing instances-each routing instance maintains its own separate set of zones.
Both intrazone (within the same zone) and interzone (between zones) traffic are controlled by security policies, which determine whether traffic is permitted or denied.

NEW QUESTION # 68
Which two non-configurable zones exist by default on an SRX Series device? (Choose two.)

• A. functional
• B. null
• C. Junos-host
• D. management

Answer: B,C

Explanation:
Junos-host and null are two non-configurable zones that exist by default on an SRX Series device. Junos-host is the default zone for all internal interfaces and services, such as management and other loopback interfaces. The null zone is used to accept all traffic that is not explicitly accepted by other security policies, and is the default zone for all unclassified traffic.
Both zones cannot be modified or deleted.

NEW QUESTION # 69
You want to confirm that your SRX Series Firewall is connected to the SBL server.
Which operational mode command would you use in this scenario?

• A. show security utm anti-spam status
• B. show security web filtering status
• C. show security utm content-filtering statistics
• D. show security utm anti-virus status

Answer: B

Explanation:
The SBL (SurfControl Web Filtering) server integration is part of UTM web filtering on SRX. To confirm that the firewall is properly connected and communicating with the SBL server, the command used is:
show security web filtering status
This command displays connectivity information with the SBL server, license status, and filtering operations.
Other options:
Anti-virus (Option A) checks antivirus engine status.
Content-filtering statistics (Option C) shows local content filtering counters.
Anti-spam status (Option D) checks spam engine connectivity.
Correct Command: show security web filtering status

NEW QUESTION # 70
Which two characteristics of destination NAT and static NAT are correct? (Choose two.)

• A. Static NAT automatically creates a matching rule for the opposite direction.
• B. Destination NAT supports port forwarding.
• C. Static NAT uses Port Address Translation.
• D. Destination NAT requires address range sizes that match the devices being translated.

Answer: A,B

Explanation:
* Static NAT:Provides a one-to-one bidirectional mapping between internal and external IP addresses.
When configured, the translation automatically applies in both directions (Option A is correct). It does not use Port Address Translation (Option C is incorrect).
* Destination NAT:Allows external clients to access internal resources by translating the destination address. It supportsport forwardingso specific services (e.g., HTTP on port 80) can be forwarded to an internal host (Option D is correct). It does not require equal-sized address ranges (Option B is incorrect).
Correct Characteristics:Static NAT is bidirectional, and Destination NAT supports port forwarding.
Reference:Juniper Networks -NAT Types and Characteristics, Junos OS Security Fundamentals.

NEW QUESTION # 71
What is the purpose of rate-limiting exception traffic in the Junos OS?

• A. to prevent denial-of-service attacks on the Routing Engine
• B. to manage routing protocols and updates
• C. to simplify the configuration of network interfaces
• D. to enhance the performance of the forwarding plane

Answer: A

Explanation:
Rate-limiting exception traffic protects the Routing Engine (RE) from being overwhelmed by excessive control-plane traffic. By limiting the rate of packets sent from the Packet Forwarding Engine (PFE) to the RE, Junos OS helps prevent denial-of-service (DoS) attacks that could disrupt management or routing processes.

NEW QUESTION # 72
Which two statements about management functional zones are correct? (Choose two.)

• A. The management functional zone is automatically created on the SRX Series Firewalls.
• B. The management functional zone cannot be referenced in any security policies.
• C. The management functional zone contains all available revenue ports until they are assigned to a user-defined security zone.
• D. The management functional zone is used to control the management-related traffic that is allowed to access your device.

Answer: A,D

Explanation:
The management functional zone is automatically created on SRX Series Firewalls to handle device management traffic.
It is used to control and separate management-related traffic (such as SSH, HTTPS, SNMP, and NTP) from regular data traffic, ensuring secure and isolated management access to the device.

NEW QUESTION # 73
Which two statements about global security policies are correct? (Choose two.)

• A. You can use both zone-based security policies and global security policies at the same time.
• B. Global policies are processed before zone-based security policies.
• C. The from-zone and to-zone contexts are not required for a global security policy.
• D. Global security policies require specific zone contexts.

Answer: A,C

Explanation:
Global security policies extend the flexibility of policy enforcement across the SRX. They are not tied to specific source and destination zones:
From-zone and to-zone contexts are not required (Option A). Global policies apply across all zones unless restricted by match conditions.
Global security policies do not require specific zone contexts (Option B is incorrect).
Global policies are processed after zone-based policies, not before. This means that zone-based security policies take precedence (Option C is incorrect).
Administrators can configure both zone-based security policies and global security policies at the same time on the same device (Option D is correct).
This allows flexible designs where specific policies can be enforced by zone, while general policies can be applied globally without duplicating rules across multiple zones.

NEW QUESTION # 74
Which two statements are correct about the null zone on an SRX Series device? (Choose two.)

• A. The null zone is a functional security zone.
• B. The null zone is created by default.
• C. You must enable the null zone before you can place interfaces into it.
• D. Traffic sent or received by an interface in the null zone is discarded.

Answer: B,D

Explanation:
According to the Juniper SRX Series Services Guide, the null zone is a predefined security zone that is created on the SRX Series device when it is booted. Traffic that is sent to or received on an interface in the null zone is discarded. The null zone is not a functional security zone, so you cannot enable or disable it.

NEW QUESTION # 75
What must also be enabled when using source NAT if the address pool is in the same subnet as the interface?

• A. static NAT
• B. proxy ARP
• C. dynamic DNS
• D. destination NAT

Answer: B

Explanation:
When source NAT uses a pool of addresses from the same subnet as the egress interface, the firewall must respond to ARP requests for those NAT pool IPs. Without this, upstream devices would not know how to forward traffic destined for those IPs.
Proxy ARP is required (Option D). It enables the SRX to answer ARP requests on behalf of the NAT pool addresses.
Static NAT (Option A) is unrelated and maps one-to-one, not required here.
Dynamic DNS (Option B) has no relation to NAT pools.
Destination NAT (Option C) applies to inbound translations, not outbound source NAT pools.
Correct Feature: Proxy ARP

NEW QUESTION # 76
You have a situation where legitimate traffic is incorrectly identified as malicious by your screen options.
In this scenario, what should you do?

• A. Increase the sensitivity of the screen options.
• B. Use the alarm-without-drop configuration parameter.
• C. Discard the traffic immediately.
• D. Enable all screen options.

Answer: B

Explanation:
Screen options are used to detect and prevent attacks such as floods, scans, and malformed packets. In some cases,false positivesmay occur, where legitimate traffic is mistakenly identified as malicious.
* To address this, administrators can configure thealarm-without-dropoption (Option D). This setting generates alarms/logs for suspicious traffic without actually dropping it, allowing verification before taking further action.
* Enabling all screen options (Option A) may increase false positives further.
* Discarding traffic immediately (Option B) risks disrupting legitimate communication.
* Increasing sensitivity (Option C) worsens the problem, since false positives would increase.
Correct Action:Use alarm-without-drop to log the traffic without dropping it.
Reference:Juniper Networks -Junos OS Screen Options and Troubleshooting, Junos OS Security Fundamentals.

NEW QUESTION # 77
You are modifying the NAT rule order and you notice that a new NAT rule has been added to the bottom of the list.
In this situation, which command would you use to reorder NAT rules?

• A. top
• B. insert
• C. up
• D. run

Answer: A

Explanation:
In Junos OS, NAT rules are evaluated in top-down order. When a new rule is added, it is placed at the bottom of the rule set by default.
To move a rule to the top of the rule set, the command is:
set security nat source rule-set <name> rule <rule-name> top
Option A (top): Correct. Moves the specified rule to the top of the list.
Option B (run): Used to execute operational commands, not rule reordering.
Option C (up): Not valid for reordering NAT rules.
Option D (insert): Not a supported NAT reordering command in Junos.
Correct Command: top

NEW QUESTION # 78
Which two criteria would be used for matching in security policies? (Choose two.)

• A. interface name
• B. source address
• C. applications
• D. MAC address

Answer: B,C

Explanation:
Security policies in Junos OS match traffic based on specific criteria:
* Source and destination addresses(Option B).
* Application(Option D), which may be defined as services (e.g., tcp/80) or recognized through AppID.
Other options:
* MAC addresses(Option A) are not used in policy matching; policies operate at Layer 3/4.
* Interface name(Option C) is used in firewall filters, not in security policy definitions.
Correct Criteria:Source address and Applications
Reference:Juniper Networks -Security Policy Match Conditions, Junos OS Security Fundamentals.

NEW QUESTION # 79
A new packet arrives on an interface on your SRX Series Firewall that is assigned to the trust security zone.
In this scenario, how does the SRX Series Firewall determine the egress security zone?

• A. by examining the ingress security zone properties
• B. by performing a session lookup
• C. by examining the destination port
• D. by performing a route lookup

Answer: D

Explanation:
When a new packet enters an SRX interface, the firewall performs a route lookup to determine the packet's egress interface. The egress security zone is then identified based on the zone associated with that interface.

NEW QUESTION # 80
Referring to the exhibit, which two statements are correct? (Choose two.)

• A. This security policy permits HTTPS traffic.
• B. This security policy uses a non-default inactivity timeout.
• C. This security policy is a zone-based security policy.
• D. This security policy is the second security policy in the list.

Answer: A,C

Explanation:
The policy is defined from Trust zone to Untrust zone, which makes it a zone-based security policy.
The application junos-https with destination port 443 and action permit confirms that HTTPS traffic is explicitly allowed.

NEW QUESTION # 81
Which zone configuration is required to permit transit traffic?

• A. a user-defined functional zone
• B. a system-defined Junos-host zone
• C. a system-defined null zone
• D. a user-defined security zone

Answer: D

Explanation:
Transit traffic is defined as traffic passing through the SRX firewall (from one interface/zone to another). To allow transit traffic:
Interfaces must be placed into a user-defined security zone (Option C).
Policies between zones are then applied to control traffic.
The null zone (Option A) discards all traffic.
The Junos-host zone (Option B) is used for traffic destined to the SRX itself, not transit.
Functional zones (Option D) are predefined and used for special purposes (like management), not for transit traffic.
Correct Configuration: User-defined security zone

NEW QUESTION # 82
On the SRX Series Firewalls, which type of NAT is bi-directional?

• A. source NAT without PAT
• B. source NAT
• C. static NAT
• D. destination NAT

Answer: C

Explanation:
Static NAT is bi-directional on SRX Series Firewalls. It creates a one-to-one mapping between internal and external IP addresses, allowing traffic to flow both from inside to outside and from outside to inside using the same translation.

NEW QUESTION # 83
Referring to the exhibit,

which two statements are correct? (Choose two.)

• A. The SRX Series Firewall is not performing PAT.
• B. The SRX Series Firewall is performing source NAT.
• C. The SRX Series Firewall is performing destination NAT.
• D. The SRX Series Firewall is performing PAT.

Answer: A,C

Explanation:
The session output shows traffic entering the SRX from 192.0.2.212/49862 to the public destination 203.0.113.199/22. The paired flow shows the translated internal server address as 10.10.101.10/22. This confirms destination NAT because the original destination IP address 203.0.113.199 is translated to the internal destination IP address 10.10.101.10. Juniper's destination NAT documentation shows the same interpretation of show security flow session: the incoming flow is destined to the public address, while the paired flow displays the translated private destination address. PAT is not being performed because the destination port remains 22 before and after translation. PAT would require port translation, but no port number changes are shown.

NEW QUESTION # 84
You want to verify the peer before IPsec tunnel establishment.
What would be used as a final check in this scenario?

• A. st0 interfaces
• B. perfect forward secrecy
• C. traffic selector
• D. proxy ID

Answer: D

Explanation:
The proxy ID is used as a final check to verify the peer before IPsec tunnel establishment. The proxy ID is a combination of local and remote subnet and protocol, and it is used to match the traffic that is to be encrypted. If the proxy IDs match between the two IPsec peers, the IPsec tunnel is established, and the traffic is encrypted.

NEW QUESTION # 85
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