Traffic is clear text
Traffic is encrypted
They are initiated by the LNS
They are initiated by the LAC
第1题：
A. 1 is the default precedence.
B. A lower number is preferred.
C. A higher number is preferred.
D. 100 is the default precedence.
第2题：
A. always for LNS
B. always for LAC
C. LAC with fragmentation in the tunnel
D. LNS when there are greater than 2000 sessions
第3题：
A. PAT is not supported.
B. PAT is enabled by default.
C. It supports the address-persistent configuration option.
D. It supports the junos-global configuration option.
第4题：
Where can L2TP tunnel attributes be obtained by an LAC? （）(Choose two.)
第5题：
Which three statements are true about load-based Call Admission Control?（）
第6题：
A. Tunnels are initiated by the LAC
B. Tunnels are initiated by the LNS
C. By default, subscriber authentication occurs on the LNS
D. By default, subscriber authentication occurs on the LAC
第7题：
A. They are always present in the NAT table.
B. They allow connection to be initiated from the outside.
C. They can be configured with access lists, to allow two or more connections to be initiated from the outside.
D. They require no inside or outside interface markings because addresses are statically defined.
第8题：
A. AH provides data integrity.
B. AH is identified by IP protocol 50.
C. AH is identified by IP protocol 51.
D. AH cannot work in conjunction with ESP
第9题：
Which two statements are true about L2TP tunnels?（） (Choose two.)
第10题：
Which two statements are true about L2TP tunnel switching?（）