A. A subnet mask specifies the portion of an IP address……

单项选择题There are three static routes in the routing table that need to be announced to your OSPF preers. Which method is used to accomplish this?（）

A. Apply an import policy to OSPF that injects the static routes into OSPF
B. Apply an import policy to the static routes that injects the static routes into OSPF
C. Apply an export policy to the static routes that injects the static routes into OSPF
D. Apply an export policy to OSPF that injects the static routes into OSPF

单项选择题Your network administrator has asked you to view the real-time interface usage on ge-0 0 0, Which command whould be used?（）

A. monitor interface ge0/0/0
B. traceoptions interface ge-0/0/0
C. debug interface ge0/0/0
D. monitor usage ge-0/0/0

多项选择题Which two statements are correct about Layer 2 broadcast frames?（）

A. Layer 2 broadcast frames are processed by all devices on the same VLAN
B. Layer 2 broadcast frames are are discarded by routers that connect to multiple VLANs
C. Layer 2 broadcast frames are relayerd by routers to all connected VLANs
D. Layer 2 broadcast frames are relayed by switches to devices on the same VLAN

多项选择题What are three physical interface properties?（）

A. payload scrambling
B. virtual circuit identifier
C. FCS
D. link speed
E. IP address

多项选择题Which two commands allow you to return to a previous verision of software on the device?（）

A. request sytem software add
B. request sytem software downgrade
C. request sytem software replace
D. request sytem software rollback