Two switches are connected through a trunk link.which two commands show that there is a native VLAN mismatch on that link?（）

多项选择题Which three are characteristics of an IPV6 anycast address?（）

A. any-to-many communication model
B. delivery of packets to the group interface that is closest to the sending device
C. one-to-many communication model
D. the same address for multiple devices in the group
E. one-to-nearest communication model
F. a unique IPV6 address for each device in the group

多项选择题Which two data intergrity algorithms are commonly used in VPN solutions?（）

A.HMAC-MD5
B.RSA
C.HMAC-SHA-1
D.DH1
E.DH2

多项选择题Which are three reasons that an organization with multiple branch offices and roaming users might implement a Cisco VPN solution instead of point-to-point WAN links?（）

A.reduced cost
B.bette rthroughput
C.increased security
D.scalability
E.reduced latency
F.broadband incompatibility

多项选择题Which three statements about EIGRP are true?（）

A. EIGRP converges fast RIP because of DUAL and backup routes that are stored in the topology table.
B. EIGRP uses a hello protocol to establish neighbor relationships
C. EIGRP uses split horizon and reverse poisoning to avoid routing loops.
D. EIGRP uses periodic updates to exchange routing information
E. EIGRP allows routers of different manufacturers to interoperate
F. EIGRP supports VLSM and authentication for routing updates.
G. EIGRP use a broadcast address to send routing information.

多项选择题Which two statements about using the CHAP authentication mechanism in a PPP link are true?（）

A. CHAP uses a two-way handshake
B. CHAP authentication periodically occurs after link establishment
C. CHAP has no protection from playback attacks
D. CHAP authentication is performed only upon link establishment
E. CHAP uses a three-way handshake
F. CHAP authentication passwords are sent in plaintext