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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: SRX Series Service Gateways | 20% | - Hardware components - Initial configuration - Interfaces - Juniper vSRX Virtual Firewall - Traffic flow and security processing - General Junos architecture - J-Web management interface |
| Topic 2: Junos OS Security Objects | 20% | - Security zones - Application objects and ALGs - Address objects and address sets - Screens and security profiles |
| Topic 3: Network Address Translation | 15% | - Static NAT - NAT pools and rules - Source NAT - Destination NAT |
| Topic 4: Monitoring, Reporting and Troubleshooting | 10% | - Traffic flow verification - Log and event management - Security policy monitoring - Troubleshooting common issues |
| Topic 5: Content Security | 15% | - Web filtering - Content filtering - Antispam filtering - Antivirus protection |
| Topic 6: Security Policies | 20% | - Global policies - Unified security policies - Zone-based policies - Policy rules and actions |
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70. Frage
When traffic enters an interface, which two results does a route lookup determine? (Choose two.)
Antwort: B,C
Begründung:
When traffic enters an SRX Series Firewall, the ingress interface determines the source security zone because that interface is already bound to a zone. The route lookup is then used to determine where the packet should leave the device. Juniper documentation explains that the packet's outgoing zone is determined by the forwarding lookup, and together the incoming zone and outgoing zone determine which security policy context is used. Therefore, the route lookup determines the egress interface and, indirectly through the egress interface's zone membership, the egress security zone. It does not determine the ingress interface because the packet has already arrived on that interface. It also does not determine a DNS name; DNS resolution is unrelated to SRX route lookup and security zone selection.
71. Frage
You are not able to ping an interface on an SRX Series Firewall.
Which two actions should you take to solve this issue? (Choose two.)
Antwort: C,D
Begründung:
For an SRX firewall interface to respond to management traffic such as ICMP pings:
* Theinterface must be assigned to a security zone(Option A). If an interface is not part of any zone, it is placed into the null zone, which drops all traffic.
* Additionally, the zone must be configured to allow management traffic types ashost-inbound-traffic (Option D). For ICMP, the protocol must be explicitly allowed under host-inbound-traffic for that zone.
Other options:
* Security policies (Option B) control traffic traversing the firewall, not traffic destined to the SRX device itself.
* Assigning the interface to the null zone (Option C) prevents any communication, including management.
Correct Actions:Assign the interface to a zone and configure ICMP under host-inbound-traffic.
Reference:Juniper Networks -Host Inbound Traffic and Zone Configuration, Junos OS Security Fundamentals.
72. Frage
Which two statements are correct about security zones on an SRX Series device? (Choose two.)
Antwort: B,D
Begründung:
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.
73. Frage
What are two system-defined zones created on the SRX Series Firewalls? (Choose two.)
Antwort: A,C
Begründung:
On SRX Series Firewalls, Junos OS automatically creates system-defined zones that have special functions:
Null zone (Option A): A predefined discard zone. By default, all interfaces belong to the null zone until assigned to a user-defined zone. Traffic destined to the null zone is dropped.
Junos-host zone (Option B): A predefined functional zone that allows security policies to control traffic directed to the SRX device itself (management traffic, such as SSH, HTTP, SNMP).
Management zone (Option C): There is a predefined management functional zone, but it is not called "management" as a system-defined security zone.
DMZ (Option D): A DMZ zone must be explicitly created by the administrator, it is not system-defined.
Correct Zones: null, junos-host
74. Frage
Click the Exhibit button.
Which two statements are correct about the content filter shown in the exhibit? (Choose two.)
Antwort: A,C
Begründung:
From the exhibit, the content filter configuration is as follows:
Match Conditions:
Application: HTTP
Direction: download
File-types: exe
Action:
block
notification log
Analysis of Options:
Option A: Incorrect. The configuration specifies the download direction, not upload. Uploads of .exe files are unaffected.
Option B: Correct. Because the rule applies to downloads, .exe files will be blocked when users attempt to download them over HTTP.
Option C: Correct. The notification { log; } statement ensures that an entry will be added to the SRX device's log when the action is triggered.
Option D: Incorrect. No configuration for sending e-mail notifications is shown in the rule. Only logging is specified.
Correct Statements: B and C
75. Frage
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