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2021 Apr JN0-633 exam guide
Q21. Which two statements are true regarding DNS doctoring? (Choose two.)
A. DNS doctoring translates the DNS CNAME payload.
B. DNS doctoring for IPv4 is supported on SRX devices.
C. DNS doctoring for IPv4 and IPv6 is supported on SRX devices.
D. DNS doctoring translates the DNS A-record.
Answer: B,D
Explanation:
Reference :http://www.juniper.net/techpubs/en_US/junos11.4/information-products/topic-collections/security/software-all/security/index.html?topic-61847.html
Q22. You have configured static NAT for a Web server in your DMZ. Both internal and external users can reach the Web server using its IP address. However, only internal users are able to reach the Web server using its DNS name. External users receive an error message from their browser.
Which action would solve this problem?
A. Modify the security policy.
B. Disable Web filtering.
C. Use destination NAT instead of static NAT.
D. Use DNS doctoring.
Answer: D
Explanation:
Reference :http://www.networker.co.in/2013/03/dns-doctoring.html
Q23. You are asked to merge the corporate network with the network from a recently acquired company. Both networks use the same private IPv4 address space (172.25.126.0/24). An SRX device serves as the gateway for each network.Which solution allows you to merge the two networks without adjusting the current address assignments?
A. source NAT
B. persistent NAT
C. double NAT
D. NAT444
Answer: C
Explanation:
Reference :http://class10e.com/juniper/what-should-you-do-to-meet-the-requirements/
Q24. Click the Exhibit button.
Traffic is being sent from Host-1 to Host-2 through an IPsec VPN. In this process, SRX-2 is using NAT to change the destination address of Host-2 from 192.168.1.1 to 10.60.60.1 SRX-1 uses the 172.31.50.1 address for its tunnel endpoint and SRX-2 uses the 10.10.50.1 address for its tunnel endpoint.
Referring to the exhibit, which statement is true?
A. The security policy on SRX-2 must permit traffic from the 172.31.50.1 destination address.
B. The security policy on SRX-2 must permit traffic from the 10.10.50.1destination address.
C. The security policy on SRX-2 must permit traffic from the 10.60.60.1 destination address.
D. The security policy on SRX-2 must permit traffic from the 192.168.1.1destination address.
Answer: C
Q25. You are asked to implement the AppFW feature on an SRX Series device. Which three tasks must be performed to make the feature work? (Choose three.)
A. Configure a firewall filter that includes the application-firewall policy.
B. Install an IPS license.
C. Install an AppSecure license.
D. Configure a security policy that includes the application-firewall policy.
E. Configure an application-firewall policy.
Answer: C,D,E
Avant-garde JN0-633 free practice exam:
Q26. Click the Exhibit button.
user@host> show log message
Feb4 00:04:17 host rpd[4516]: EVENT <UpDowm> st0.0 index 76 <Up Broadcast Multicast>
Feb4 00:04:17 host-kmd[1391]: KMD_PM_SA ESTABLISHED: Local gateway: 192.168.10.1, Remote gateway: 192.168.10.3, Local ID: ipv4_subnet(any:0, [0..7]=0.0.0.0/0), Remote ID: ipv4_subnet(any:0,[0..7]=0.0.0.0/0),
Direction: inbound, SPI: 0x8d5816fd, AUX-SPI: 0, Mode: Tunnel, Type: dynamic, Traffic-selector:
Feb4 00:04:17 host rpd[4516]: EVENT UpDown st0.0 index 76 10.10.10.1/24 –
> (null) <Up Broadcast Multicast>
Feb4 00:04:17 host kmd[1391]: KMD_PM_SA_ESTABLISHED: Local gateway: 192.168.10.1, Remote gateway: 192.168.10.3, Local ID: ipv4_subnet(any:0, [0..7]=0.0.0.0/0), Remote ID: ipv4_subnet(any:0,[0..7]=0.0.0.0/0),
Direction: outbound, SPI: 0x77f07d5c, AUX-SPI: 0, Mode: Tunnel, Type: dynamic, Traffic-selector:
Feb4 00:04:17 host kmd[1391]: KMD_VPN_UP_ALARM_USER: VPNto-spoke-1 from 192.168.10.3 is up. Local-ip: 192.168.10.1, gateway name: spoke-1, vpn name:
to-spoke-1, tunnel-id: 131073, local tunnel-if: st0.0, remote tunnel-ip:
10.10.10.3, Local IKE-ID: 192.168.10.1, Remote IKE-ID: 192.168.10.3, XAUTH
username: Not-Applicable, VR id: 0, Traffic-selector: , Traffic-selector local ID:ipv4_subnet,(any:0,[0..7]=0.0.0.0/0), Traffic-selector remote ID: ipv4_subnet(any:11,[0..7]=0.0.0.0/0)
Feb4 00:04:17 host mib2d[1385]: SNMP_TRAP_LINK_UP: ifIndex 539, ifAdminSiLatus up(1), ifOperStatus up(1), ifName st0.0
Feb4 00:04:17 host kmd[1391]: KMD_PM_SA_ESTABLTSHED: Local gateway: 192.168.10.1, Remote gateway: 192.168.10.5, Local ID: ipv4 subnet(any:0, [0..7]=0.0.0.0/0), Remote ID: ipv4_subnet(any:0,[0..7]=0.0.0.0/0),
Direction: inbound, SPI: 0x2790a42c, AUX-SPI: 0, Mode: Tunnel, Type: dynamic, Traffic-selector:
Feb4 00:04:17 host kmd[1391]: KMD_PM_SA_ESTABLISHED: Local gateway: 192.168.10.1, Remote gateway: 192.168.10.5, Local ID: ipv4_subnet(any:0, [0..7]=0.0.0.0/0), Remote ID: ipv4_subnet(any:0,[0..7]=0.0.0.0/0),
Direction: outbound, SPI: 0x2df17ea8, AUX-SPI: 0, Mode: Tunnel, Type: dynamic, Traffic-selector:
Feb4 00:04:17 host kmd[1391]: KMD_VPN_UP_ALARM_USER: VPN to-spoke-3 from 192.168.10.5 is up. Local-ip: 192.168.10.1, gateway name: spoke-3, vpn name:
to-spoke-3, tunnel-id: 131076, local tunnel-if: st0.0, remote tunnel-ip:
Not-Available, Local IKE-ID: 192.168.10.1, Remote IKE-ID: 192.168.10.5,
XAUTH username: Not-Applicable, VR id: 0, Traffic-selector: , Traffic- selector local TD: ipv4_subnet(any:0,[0..7]=0.0.0.0/0), Traffic-selector remote ID: ipv4_subnet(any:0,[0._7]=0.0.0.0/0)
Feb4 00:04:17 host kmd[1391]: IKE negotiation failed with error: No proposal chosen. IKE Version: 1, VPN: to-spoke-2 Gateway: spoke-2, Local: 192.168.10.1/500, Remote: 192.168.10.4/500, Local IKE-ID: Not-Available,
Remote Not-Available, VR-ID: 0
Referring to the exhibit, which statement is correct?
A. The phase 1 security association for theto-spoke-3VPN is failing.
B. The phase 2 security association for theto-spoke-1VPN is failing.
C. The phase 2 security association for theto-spoke-3VPN is failing.
D. The phase 1 security association for theto-spoke-2VPN is failing.
Answer: B
Q27. Your company's network has seen an increase in Facebook-related traffic. You have been asked to restrict the amount of Facebook-related traffic to less than 100 Mbps regardless of congestion.
What are three components used to accomplish this task? (Choose three.)
A. IDP policy
B. application traffic control
C. application firewall
A. D. security policy
E. application signature
Answer: B,D,E
Explanation:
An IDP policy defines how your device handles the networktraffic.It will not limit the rate. Reference:http://www.juniper.net/techpubs/software/junos-security/junos-security96/junos-security-swconfig-security/idp-policy-overview-section.html)
Application Firewallenforces protocol and policy control at Layer 7. It inspects the actual content of the payload and ensures that it conforms to the policy, rather thanlimiting the rate.
Reference:http://www.juniper.net/techpubs/en_US/junos12.1x44/topics/concept/application-firewall-overview.html
Q28. You want requests from the same internal transport address to be mapped to the same external transport address. Only internal hosts can initialize the session.
Which Junos configuration setting supports the requirements?
A. any-remote-host
B. target-host
C. source-host
D. address-persistent
Answer: D
Explanation:
Reference :http://www.juniper.net/techpubs/software/junos-security/junos-security96/junos-security-swconfig-security/understand-persistent-nat-section.html
Q29. You must configure a central SRX device connected to two branch offices with overlapping IP address space. The branch office connections to the central SRX device must reside in separate routing instances.Which two components are required? (Choose two.)
A. virtual routing instance
B. forwarding instance
C. static NAT
D. persistent NAT
Answer: A,C
Explanation:
Reference :http://kb.juniper.net/InfoCenter/index?page=content&id=KB21286
Q30. Which QoS function is supported in transparent mode?
A. 802.1p
B. DSCP
C. IP precedence
D. MPLS EXP
Answer: A
Explanation: Reference: http://chimera.labs.oreilly.com/books/1234000001633/ch06.html
