单项选择题
A metro Ethernet user is connected using a PPP over Ethernet service.How many Layer 2 headers are attached to each IP datagram?（）
A.1
B.2
C.3
D.4
相关考题
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单项选择题
Which set of commands correctly builds a PPP over Ethernet connection on a DSL connection?（）
A. interface atm 5/1.1 atm pvc 1 0 101 aal5snap encapsulation ppp ppp authentication chap ip unnumbered loopback 1
B. interface atm 5/1.1 atm pvc 1 0 101 aal5snap encapsulation pppoe interface pppoe 5/1.1 encapsulation ppp ppp authentication chap ip unnumbered loopback 1
C. interface atm 5/1.1 atm pvc 1 0 101 aal5snap encapsulation pppoe interface atm 5/1.1.1 encap ppp ppp authentication chap ip unnumbered loopback 1
D. interface atm 5/1.1 atm pvc 1 0 101 aal5snap encapsulation pppoe ppp authentication chap ip unnumbered loopback 1 -
多项选择题
The PPP over Ethernet Discovery Stage determines which two parameters? （）(Choose two.)
A. session ID
B. authentication server
C. IP address of the client
D. MAC address of the ERX router -
多项选择题
When multiple PPP over Ethernet subscribers connect using the same DSL modem, which two attributes does the ERX use to differentiate between subscribers? （）(Choose two.)
A. PPP session ID
B. subscriber name
C. source MAC address
D. destination MAC address
