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Q51. You are using logical systems to segregate customers. You have a requirement to enable communication between the logical systems.What are two ways to accomplish this goal? (Choose two.)
A. Use a shared DMZ zone to connect the logical systems together.
B. Use a virtual tunnel (vt-) interface to connect the logical systems together.
C. Use an external cable to connect the ports from the two logical systems.
D. Use an interconnect LSYS to connect the logical systems together.
Answer: C,D
Explanation:
Reference :http://www.juniper.net/techpubs/en_US/junos11.4/information-products/topic-collections/security/software-all/logical-systems-config/index.html?topic-53861.html
Q52. You are asked to ensure that your IPS engine blocks attacks. You must ensure that your system continues to drop additional malicious traffic without additional IPS processing for up to 30 minutes. You must ensure that the SRX Series device does send a notification packet when the traffic is dropped.
Which statement is correct?
A. Use the IP-Block action.
B. Use the Drop Packet action.
C. Use the Drop Connection action.
D. Use the IP-Close action.
Answer: D
Q53. You want to implement an IPsec VPN on an SRX device using PKI certificates for authentication. As part of the implementation, you are required to ensure that the certificate submission, renewal, and retrieval processes are handled automatically from the certificate authority.Regarding this scenario, which statement is correct?
A. You can use SCEP to accomplish this behavior.
B. You can use OCSP to accomplish this behavior.
C. You can use CRL to accomplish this behavior.
D. You can use SPKI to accomplish this behavior.
Answer: A
Explanation: Reference: Page 9
http://www.juniper.net/techpubs/en_US/junos/information-products/topic-collections/nce/pki-conf-trouble/configuring-and-troubleshooting-public-key- infrastructure.pdf
Q54. The IPsec VPN on your SRX Series device establishes both the Phase 1 and Phase 2 security associations. Users are able to pass traffic through the VPN. During peak VPN usage times, users complain about decreased performance. Network connections outside of the VPN are not seriously impacted.
Which two actions will resolve the problem? (Choose two.)
A. Lower the MTU size on the interface to reduce the likelihood of packet fragmentation.
B. Verify that NAT-T is not disabled in the properties of the phase 1 gateway.
C. Lower the MSS setting in the security flow stanza for IPsec VPNs.
D. Verify that the PKI certificate used to establish the VPN is being properly verified using either the CPL or OCSP.
Answer: A,C
Q55. You have been asked to configure traffic to flow between two virtual routers (VRs) residing on two unique logical systems (LSYSs) on the same SRX5800.
How would you accomplish this task?
A. Configure a security policy that contains the context from VR1 to VR2 to permit the relevant traffic.
B. Configure a security policy that contains the context from LSYS1 to LSYS2 and relevant match conditions in the rule set to allow traffic between the IP networks in VR1 and VR2.
C. Configure logical tunnel interfaces between VR1 and VR2 and security policies that allow relevant traffic between VR1 and VR2 over that link.
D. Configure an interconnect LSYS to facilitate a connection between LSYS1 and LSYS2 and relevant policies to allow the traffic.
Answer: C
Explanation:
Reference :http://kb.juniper.net/InfoCenter/index?page=content&id=KB21260
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Q56. You are asked to configure your SRX Series device to support IDP SSL inspections for up to 6,000 concurrent HTTP sessions to a server within your network.
Which two statements are true in this scenario? (Choose two.)
A. You must add at least one PKI certificate.
B. Junos does not support more than 5000 sessions in this scenario.
C. You must enable SSL decoding.
D. You must enable SSL inspection.
Answer: C,D
Q57. You are asked to implement an IPsec VPN between your main office and a new remote office. The remote office receives its IKE gateway address from their ISP dynamically.
Regarding this scenario, which statement is correct?
A. Configure a fully qualified domain name (FQDN) as the IKE identity.
B. Configure the dynamic-host-address option as the IKE identity.
C. Configure the unnumbered option as the IKE identity.
D. Configure a dynamic host configuration name (DHCN) as the IKE identity.
Answer: A
Q58. Click the Exhibit button.
-- Exhibit --
[edit security idp] user@srx# show security-package {
url https://services.netscreen.com/cgi-bin/index.cgi; automatic {
start-time "2012-12-11.01:00:00 +0000";
interval 120; enable;
}
}
-- Exhibit --
You have configured your SRX device to download and install attack signature updates as shown in the exhibit. You discover that updates are not being downloaded.
What are two reasons for this behavior? (Choose two.)
A. No security policy is configured to allow the SRX device to contact the update server.
B. The SRX device does not have a DNS server configured.
C. The management zone interface does not have an IP address configured.
D. The SRX device has no Internet connectivity.
Answer: B,D
Explanation:
Configuration is correct. Only reason is that SRZ device is not able to connect to definition server.
Reference:http://kb.juniper.net/InfoCenter/index?page=content&id=KB16491
Q59. You are asked to implement a monitoring feature that periodically verifies that the data plane is working across your IPsec VPN.Which configuration will accomplish this task?
A. [edit security ike] user@srx# show policy policy-1 { mode main;
proposal-set standard;
pre-shared-key ascii-text "$9$URiqPFnCBIc5QIcylLXUjH"; ## SECRET-DATA
}
gateway my-gateway { ike-policy policy-1; address 10.10.10.2; dead-peer-detection;
external-interface ge-0/0/1;
}
B. [edit security ipsec] user@srx# show
policy policy-1 { proposal-set standard;
}
vpn my-vpn {
bind-interface st0.0; dead-peer-detection; ike {
gateway my-gateway; ipsec-policy policy-1;
}
establish-tunnels immediately;
}
C. [edit security ike] user@srx# show policy policy-1 { mode main;
proposal-set standard;
pre-shared-key ascii-text "$9$URiqPFnCBIc5QIcylLXUjH"; ## SECRET-DATA
}
gateway my-gateway { ike-policy policy-1; address 10.10.10.2; vpn-monitor;
external-interface ge-0/0/1;
}
D. [edit security ipsec] user@srx# show policy policy-1 { proposal-set standard;
}
vpn my-vpn {
bind-interface st0.0; vpn-monitor;
ike {
gateway my-gateway; ipsec-policy policy-1;
}
establish-tunnels immediately;
}
Answer: D
Explanation: Reference: https://www.juniper.net/techpubs/en_US/junos11.4/information-products/topic-collections/security/software-all/monitoring-and-troubleshooting/index.html?topic- 59092.html
Q60. You are asked to establish a hub-and-spoke IPsec VPN using your SRX Series device as the hub. All of your spoke devices are third-party devices.
Which statement is correct?
A. You must create a policy-based VPN on the hub device when peering with third-party devices.
B. You must always peer using loopback addresses when using non-Junos devices as your spokes.
C. You must statically configure the next-hop tunnel binding table entries for each of the third-party spoke devices.
D. You must ensure that you are using aggressive mode when incorporating third-party devices as your spokes.
Answer: C