Which zone is system-defined?（）

单项选择题Which statement contains the correct parameters for a route-based IPsec VPN?（）

A. [edit security ipsec] user@host# show proposal ike1-proposal { protocol esp; authentication-algorithm hmac-md5-96; encryption-algorithm 3des-cbc; lifetime-seconds 3200; }policy ipsec1-policy { perfect-forward-secrecy { keys group2; } proposals ike1-proposal; } vpn VpnTunnel { interface ge-0/0/1.0; ike { gateway ike1-gateway; ipsec-policy ipsec1-policy; } establish-tunnels immediately; }
B. [edit security ipsec] user@host# show proposal ike1-proposal { protocol esp; authentication-algorithm hmac-md5-96; encryption-algorithm 3des-cbc; lifetime-seconds 3200; } policy ipsec1-policy { perfect-forward-secrecy { keys group2; } proposals ike1-proposal; } vpn VpnTunnel { interface st0.0; ike { gateway ike1-gateway; ipsec-policy ipsec1-policy; } establish-tunnels immediately; }
C. [edit security ipsec] user@host# show proposal ike1-proposal { protocol esp; authentication-algorithm hmac-md5-96; encryption-algorithm 3des-cbc; lifetime-seconds 3200;} policy ipsec1-policy { perfect-forward-secrecy { keys group2; } proposals ike1-proposal; } vpn VpnTunnel { bind-interface ge-0/0/1.0; ike { gateway ike1-gateway; ipsec-policy ipsec1-policy; } establish-tunnels immediately; }
D. [edit security ipsec] user@host# show proposal ike1-proposal { protocol esp; authentication-algorithm hmac-md5-96; encryption-algorithm 3des-cbc; lifetime-seconds 3200; }policy ipsec1-policy { perfect-forward-secrecy { keys group2; } proposals ike1-proposal; } vpn VpnTunnel { bind-interface st0.0; ike { gateway ike1-gateway; ipsec-policy ipsec1-policy; } establish-tunnels immediately; }

单项选择题Which command do you use to display the status of an antivirus database update?（）

A. show security utm anti-virus status
B. show security anti-virus database status
C. show security utm anti-virus database
D. show security utm anti-virus update

单项选择题Which security or functional zone name has special significance to the Junos OS?（）

A. self
B. trust
C. untrust
D. junos-global

单项选择题Which type of Web filtering by default builds a cache of server actions associated with each URL it has checked?（）

A. Websense Redirect Web filtering
B. integrated Web filtering
C. local Web filtering
D. enhanced Web filtering

多项选择题Which three security concerns can be addressed by a tunnel mode IPsec VPN secured by AH?（） (Choose three.)

A. data integrity
B. data confidentiality
C. data authentication
D. outer IP header confidentiality
E. outer IP header authentication