A. protocol listB. MIMEC. block listD. extensionRegardi……

多项选择题Which two statements regarding symmetric key encryption are true?（） (Choose two.)

A. The same key is used for encryption and decryption.
B. It is commonly used to create digital certificate signatures.
C. It uses two keys: one for encryption and a different key for decryption.
D. An attacker can decrypt data if the attacker captures the key used for encryption.

单项选择题You want to allow your device to establish OSPF adjacencies with a neighboring device connected to interface ge-0 0 3.0. Interface ge-0 0 3.0 is a member of the HR zone.Under which configuration hierarchy must you permit OSPF traffic?（）

A. [edit security policies from-zone HR to-zone HR]
B. [edit security zones functional-zone management protocols]
C. [edit security zones protocol-zone HR host-inbound-traffic]
D. [edit security zones security-zone HR host-inbound-traffic protocols]

单项选择题Which zone is system-defined?（）

A.security
B.functional
C.junos-global
D.management

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