In JUNOS software with enhanced services, which three packet elements are inspected to determineif a session already exists? （）(Choose three.)

单项选择题You want to create a policy allowing traffic from any host in the Trust zone to hostb.example.com(172.19.1.1) in theUntrust zone. How do you do create this policy? （）

A. Specify the IP address (172.19.1.1/32) as the destination address in the policy.
B. Specify the DNS entry (hostb.example.com.) as the destination address in the policy.
C. Create an address book entry in the Trust zone for the 172.19.1.1/32 prefix and reference this entry in the policy.
D. Create an address book entry in the Untrust zone for the 172.19.1.1/32 prefix and reference this entry in the policy.

多项选择题Click the Exhibit button. host_a is in subnet_a and host_b is in subnet_b. Given the configuration shown in the exhibit, which statement is true about traffic from host_a to host_b?（）

A. DNS traffic is denied.
B. Telnet traffic is denied.
C. SMTP traffic is denied.
D. Ping traffic is permitted.

多项选择题Which two are characteristics of link-state routing protocols?（） (Choose two.)

A. Routers choose a best path for a destination based on the SPF algorithm.
B. All routers in a given area or level build a consistent database describing the network's topology.
C. Routers choose the best path for a destination based on the interface on which they received the link stateadvertisement with the lowest cost.
D. All routers in a given area or level forward link state advertisements between interfaces in the same area or level, adding their metric to the link state advertisement's cost information when they forward it.

多项选择题Which two are components of the enhanced services software architecture?（） (Choose two.)

A. Linux kernel
B. routing protocol daemon
C. session-based forwarding module
D. separate routing and security planes

单项选择题Which statement is true about interface-based static NAT? （）

A. It also supports PAT.
B. It requires you to configure address entries in the junos-nat zone.
C. It requires you to configure address entries in the junos-global zone.
D. The IP addresses being translated must be in the same subnet as the incoming interface.