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2021 Dec JN0-633 test engine
Q91. Click the Exhibit button.
user@host> monitor traffic interface ge-0/0/3
verbose output suppressed, use <detail> or <extensive> for full protocol decode Address resolution is ON. Use <no-resolve> to avoid any reverse lookup delay. Address resolution timeout is 4s.
Listening on ge-0/0/3, capture size 96 bytes
Reverse lookup for 172.168.3.254 failed (check DNS reachability). Other reverse lookup failures will not be reported.
Use <no-resolve> to avoid reverse lockups on IP addresses.
19:24:16.320907 In arp who-has 172.168.3.254 tell 172.168.3.1 19.24:17.322751 In arp
who has 172.168.3.254 tell 172.168.3.1 19.24:18.328895 In arp who-has 172.168.3.254 tell
172.168.3.1
19.24:18.332956 In arn who has 172.168.3.254 tell 172.168.3.1
A new server has been set up in your environment. The administrator suspects that the firewall is blocking the traffic from the new server. Previously existing servers in the VLAN are working correctly. After reviewing the logs, you do not see any traffic for the new server.
Referring to the exhibit, what is the cause of the problem?
A. The server is in the wrong VLAN.
B. The server has been misconfigured with the wrong IP address.
C. The firewall has been misconfigured with the incorrect routing-instance.
D. The firewall has a filter enabled to blocktrafficfrom the server.
Answer: C
Q92. An external host is attacking your network. The host sends an HTTP request to a Web server, but does not include the version of HTTP in the request.
Which type of attack is being performed?
A. signature-based attack
B. application identification
C. anomaly
D. fingerprinting
Answer: C
Explanation: Reference;https://services.netscreen.com/restricted/sigupdates/nsm-updates/HTML/HTTP%3AINVALID%3AMSNG-HTTP-VER.html
Q93. You are using the AppDoS feature to control against malicious bot client attacks. The bot clients are using file downloads to attack your server farm. You have configured a context value rate of 10,000 hits in 60 seconds.At which threshold will the bot clients no longer be classified as malicious?
A. 5000 hits in 60 seconds
B. 8000 hits in 60 seconds
C. 7500 hits in 60 seconds
D. 9999 hits in 60 seconds
Answer: B
Explanation: Reference :
http://www.juniper.net/techpubs/software/junos-security/junos-security10.0/junos-security-swconfig-security/appddos-protection-overview.html
Q94. 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
Q95. Click the Exhibit button.
-- Exhibit -- [edit security]
user@srx# show idp
…
application-ddos Webserver { service http;
connection-rate-threshold 1000; context http-get-url {
hit-rate-threshold 60000;
value-hit-rate-threshold 30000;
time-binding-count 10;
time-binding-period 25;
}
}
-- Exhibit --
You are using AppDoS to protect your network against a bot attack, but noticed an approved application has falsely triggered the configured IDP action of drop. You adjusted your AppDoS configuration as shown in the exhibit. However, the approved traffic is still dropped.
What are two reasons for this behavior? (Choose two.)
A. The approved traffic results in 50,000 HTTP GET requests per minute.
B. The approved traffic results in 25 HTTP GET requests within 10 seconds from a single host.
C. The active IDP policy has not been defined in the security configuration.
D. The IDP action is still in effect due to the timeout configuration.
Answer: A,D
Explanation: Reference:http://www.juniper.net/techpubs/software/junos-security/junos-security10.0/junos-security-swconfig-security/appddos-protection-overview.html
http://www.juniper.net/techpubs/software/junos-security/junos-security10.0/junos-security-swconfig-security/appddos-proctecting-against.html#appddos-proctecting-against
Up to the minute JN0-633 test:
Q96. 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
Q97. Which configuration statement would allow the SRX Series device to match a signature only on the first match, and not subsequent signature matches in a connection?
A. user@host# set security idp idp-policy test rulebase-ips rule 1 then action recommended
B. user@host# set security idp idp-policy test rulebase-ips rule 1 then action ignore- connection
C. user@host# set security idp idp-policy test rulebase-ips rule 1 then action no-action
D. user@host# set security idp idp-policy test rulebase-ips rule 1 then action drop-connection
Answer: B
Q98. You recently implemented application firewall rules on an SRX device to act upon encrypted traffic. However, the encrypted traffic is not being correctly identified.
Which two actions will help the SRX device correctly identify the encrypted traffic? (Choose two.)
A. Enable heuristics to detect the encrypted traffic.
B. Disable the application system cache.
C. Use the junos:UNSPECIFIED-ENCRYPTED application signature.
D. Use the junos:SPECIFIED-ENCRYPTED application signature.
Answer: A,C
Explanation: Reference:http://www.juniper.net/techpubs/en_US/junos12.1x44/topics/concept/encrypted-p2p-heuristics-detection.html
Q99. Click the Exhibit button.
-- Exhibit --
user@srx# show security datapath-debug capture-file pkt-cap-file format pcap size 5m; action-profile {
pkt-cap-profile {
event np-ingress { packet-dump;
}
}
}
packet-filter pkt-filter { action-profile pkt-capture; source-prefix 1.2.3.4/32;
}
-- Exhibit --
You want to capture transit traffic passing through your SRX3600. You add the configuration shown in the exhibit but do not see entries added to the capture file.
What is causing the problem?
A. You are missing the configuration set security datapath-debug maximum-capture-size 1500.
B. You are missing the configuration set security datapath-debug packet-filter pkt-filter destination-prefix 5.6.7.8/32.
C. You must start the capture from operational mode with the command request security datapath-debug capture start.
D. You must start the capture from operational mode with the command monitor start capture.
Answer: C
Q100. You are performing AppSecure traffic processing to enforce AppFW.
What happens when traffic matching an established security session is newly detected as a different application?
A. The security processing facility of the data plane re-examines the whitelist or blacklist referenced in the security policy to see if the new application is permitted.
B. The newly detected application will not be permitted and session will be torn down unless a specific match exists against the exempt rulebase.
C. Zone-based firewall rules will be re-parsed to determine if a rule exists that permits the newly detected application.
D. The application will not be permitted if doing so would violate the session limit in the screen properties applied to that zone.
Answer: B
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