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2021 Sep JN0-633 training

Q61. Which problem is introduced by setting the terminal parameter on an IPS rule?

A. The SRX device will stop IDP processing for future sessions.

B. The SRX device might detect more false positives.

C. The SRX device will terminate the session in which the terminal rule detected the attack.

D. The SRX device might miss attacks.

Answer: D

Explanation: Reference: http://www.juniper.net/techpubs/software/junos-security/junos-security10.2/junos-security-swconfig-security/topic-42464.html


Q62. Referring to the following output, which command would you enter in the CLI to produce this result?

Pic2/1

Ruleset Application Client-to-server Rate(bps) Server-to-client Rate(bps) http-App-QoS HTTP ftp-C2S 200 ftp-C2S 200

http-App-QoS HTTP ftp-C2S 200 ftp-C2S 200

ftp-App-QoS FTP ftp-C2S 100 ftp-C2S 100

A. show class-of-service interface ge-2/1/0

B. show interface flow-statistics ge-2/1/0

C. show security flow statistics

D. show class-of-service applications-traffic-control statistics rate-limiter

Answer: D 

Explanation: Reference

http://www.juniper.net/techpubs/en_US/junos12.1x44/topics/reference/command-summary/show-class-of-service-application-traffic-control-statistics-rate-limiter.html


Q63. 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


Q64. Which statement is true regarding destination NAT?

A. Destination NAT changes the content of the source IP address field.

B. Destination NAT changes the content of the destination IP address field.

C. Destination NAT matches on the destination IP address and changes the source IP address.

D. Destination NAT matches on the destination IP address and changes the source port.

Answer: B


Q65. 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


JN0-633 answers

Far out JN0-633 exam question:

Q66. Your manager asks you to show which attacks have been detected on your SRX Series device using the IPS feature.

Which command would you use to accomplish this task?

A. show security idp attack detail

B. show security idp attack table

C. show security idp memory

D. show security idp counters

Answer: B


Q67. What is the default action for an SRX device in transparent mode to determine the outgoing interface for an unknown destination MAC address?

A. Perform packet flooding.

B. Send an ARP query.

C. Send an ICMP packet with a TTL of 1.

D. Perform a traceroute request.

Answer: A

Explanation: Reference: http://www.juniper.net/techpubs/software/junos-security/junos-security95/junos-security-swconfig-interfaces-and-routing/understand-l2-forwarding-tables-section.html


Q68. An SRX Series device is configured for inline tap mode. What will occur if Drop Packet is selected?

A. The SRX Series device drops a matching packet before it can reach its destination but does not close the connection.

B. The SRX Series device will ignore the action Drop Packet.

C. The SRX Series device closes the connection and sends an RST packet to both the client and the server.

D. The SRX Series device drops a matching packet associated with the connection, preventing traffic for the connection from reaching its destination.

Answer: D


Q69. Click the Exhibit button.

[edit security idp-policy test] user@host# show

rulebase-ips { rule R3 { match {

source-address any; destination-address any; attacks {

predefined-attacks FTP:USER:ROOT;

}

}

then { action {

recommended;

}

}

terminal;

}

rule R4 { match {

source-address any; destination-address any; attacks {

predefined-attacks HTTP:HOTMAIL:FILE-UPLOAD;

}

}

then { action {

recommended;

}

}

}

}

You have just committed the new IDP policy shown in the exhibit. However, you notice no action is taken on traffic matching the R4 IDP rule.

Which two actions will resolve the problem? (Choose two.)

A. Change the R4 rule to match on a predefined attack group.

B. Insert the R4 rule above the R3 rule.

C. Delete theterminalstatement from the R3 rule.

D. Change the IPS rulebase to an exempt rulebase.

Answer: C


Q70. Click the Exhibit button.

-- Exhibit–


-- Exhibit --

You must configure two SRX devices to enable bidirectional communications between the two networks shown in the exhibit. You have been allocated the 172.16.1.0/24 and 172.16.2.0/24 networks to use for this purpose.

Which configuration will accomplish this task?

A. Use an IPsec VPN to connect the two networks and hide the addresses from the Internet.

B. Using destination NAT, translate traffic destined to 172.16.1.0/24 to Site1's addresses, and translate traffic destined to 172.16.2.0/24 to Site2's addresses.

C. Using source NAT, translate traffic from Site1's addresses to 172.16.1.0/24, and translate traffic from Site2's addresses to 172.16.2.0/24.

D. Using static NAT, translate traffic destined to 172.16.1.0/24 to Site1's addresses, and translate traffic destined to 172.16.2.0/24 to Site2's addresses.

Answer: D

Explanation:

To examine bidirectional communication you need multiple packet filters, one for each direction.

Reference

http://my.safaribooksonline.com/book/networking/junos/9781449381721/security-policy/troubleshooting_security_policy_and_traf