多項選擇題Whattwo things must you do onthe router before generating an SSH key with the "crypto key generate rsa"IOS command？ （）

A. Configure the SSH version that the router will use
B. Configure the host name of the router
C. Enable AAA Authentication
D. Configure the default IP domain name that the router will use
E. Enable SSH transport support onthe vty lines


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1.單項選擇題What is the main reason for using the "ip ips deny-action ips-interface" IOS command？（）

A. To selectively apply drop actions to specific interfaces
B. To enable IOS to droptraffic for signatures configured with the Drop action
C. To support load-balancing configurations in which traffic can arrive via multipleinterfaces 
D. This is nota valid IOS command

2.多項選擇題Which of the following is true about the Cisco IOS-IPS functionality？ （）

A. The signatures available are built into the IOS code.
B. Toupdate signatures youneed to install a new IOS image
C. To activate new signatures you download a new Signature DefiitionFile （SDF） from Cisco’s web site
D. Loading and enabling selected IPS signatures is user configurable
E. Cisco IOS onlyprovides Intrusion Detection functionality
F. Cisco IOS-IPS requires a network module installed in your router running sensor software

3.單項選擇題What is true about a Pre-Block ACLconfigured when setting up your sensor toperform IP Blocking？（）

A. The Pre-Block ACL is overwritten when a blockingaction is initiatied by the sensor
B. The blocking ACL entries generated by the sensor override the Pre-Block ACL entries
C. The Pre-Block ACL entries override the blocking ACL entries generated by the sensor
D. The Pre-Block ACL is replaced by the Post-Block ACL when a blocking actionis initiated bythe sensor
E. You can not configure a Pre-Block ACL when configuring IP Blockingon your sensor

4.多項選擇題Which two IP multicast addresses belong to the group represented by the MAC address of 0x01-00-5E-15-6A-2C？ （）

A. 224.21.106.44
B. 224.25.106.44
C. 233.149.106.44
D. 236.25.106.44
E. 239.153.106.44

5.單項選擇題A network administrator is using a LAN analyzer to troubleshoot OSPF router exchange messages sent to ALLOSPF ROUTERS. To what MAC address are these messages sent？（）

A. 00-00-1C-EF-00-00
B. 01-00-5E-00-00-05
C. 01-00-5E-EF-00-00
D. EF-FF-FF-00-00-05
E. EF-00-00-FF-FF-FF
F. FF-FF-FF-FF-FF-FF