Which statement is true regarding IPsec VPNs?（）

单项选择题If both nodes in a chassis cluster initialize at different times, which configuration example will allow you to ensure that the node with the higher priority will become primary for your RGs other than RG0?（）

A. [edit chassis cluster] user@host# show redundancy-group 1 { node 0 priority 200; node 1 priority 150;preempt; }
B. [edit chassis cluster] user@host# show redundancy-group 1 { node 0 priority 200; node 1 priority 150; monitoring; }
C. [edit chassis cluster] user@host# show redundancy-group 1 { node 0 priority 200; node 1 priority 150; control-link-recovery; }
D. [edit chassis cluster] user@host# show redundancy-group 1 { node 0 priority 200; node 1 priority 150; strict-priority; }

单项选择题Which CLI command do you use to block MIME content at the [edit security utm feature-profile] hierarchy?（）

A. set content-filtering profile permit-command block-mime
B. set content-filtering profile block-mime
C. set content-filtering block-content-type block-mime
D. set content-filtering notifications block-mime

多项选择题Which two features protect the ERX Edge Router from denial-of-service attacks? （）(Choose two.)

A. rate limiting of ICMP
B. RADIUS authorizations
C. source address validation
D. stateful firewall on the router

单项选择题Which configuration command allows the ERX Edge Router to perform Unicast Reverse Path Forwarding lookups on all packets received on an IP interface?（）

A. ip sa-validate
B. ip split-horizon
C. ip access-routes
D. ip filter-options

单项选择题What are the maximum number of classifiers per policy group?（）

A. 100
B. 128
C. 256
D. 512