3/2
3<2
3*4
3<<2
3*2^2
3<<<2
Which two are natively included by the IEEE 802.1w standard？（）A、instances can control a selection of VLANsB、load balancingC、fast transition to forwarding stateD、backbone，uplink，and portfast （or equivalent）E、root，loop，and BPDU guard （or equivalent）
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A Company is using 6to4 tunnels in their IPv6 network. Which two statements are true about thesetunnels？（）A、In a 6to4 tunnel， the first two bytes of the IPv6 address will be 0x2002 and the next four byteswill be the hexadecimal equivalent of the IPv4 addressB、In a 6to4 tunnel， the IPv4 address 192.168.99.1 would be converted to the2002：1315：4463：1：：/64 IPv6 addressC、In a 6to4 tunnel， the IPv4 address 192.168.99.1 would be converted to the 2002：c0a8：6301：：/48IPv6 addressD、In a 6to4 tunnel， the first two bytes of the IPv6 address will be locally derived and the next twobytes will be the hexadecimal equivalent of the IPv4 addressE、In a 6to4 tunnel， the IPv4 address 192.168.99.1 would be converted to the 2002：c0a8：6301：：/16IPv6 address
Which two statements about the Wired Equivalent Privacy （WEP） encryption mechanism are true？ （）A、the two methods of authentication using the WEP encryption are open and shared keyB、the 802.11 standard defines WEP security using 128-bit keysC、WEP can provide stronger authentication through the use of LEAP， PEAP， or EAP-FASTD、WEP is a scalable encryption solution that uses static keys for authenticationE、WEP security provides only one-way authenticationF、WEPv2 offers improved encryption by replacing the RC4 encryption mechanism with the AES （symmetric block cipher） mechanism
Which network mask is the equivalent of 255.255.248.0?（）A、/20B、/21C、/22D、/23
Which are the two options to which a menu can be assigned?（） (Choose two.)A、menuB、functionsC、data groupD、responsibilityE、functional group
Which two are equivalent？（） A、 3/2B、 3<2C、 3*4D、 3<<2E、 3*2^2F、 3<<<2
If two routers， both reachable from one another， originate functionally equivalent type 2 external- LSAs （i.e，same destination， cost and non-zero forwarding address ）， Which of the following statements wouldapply ？（）A、Two LSAs will exist in the network for this destination， and both will be usedB、Two LSAs will exist in the network for this destination， but only the one generated by the highest RID ASBR will be usedC、Only the LSA generated by the highest RID ASBR will exist in the networkD、Only the LSA generated by the lowest RID ASBR will exist in the network
