The following topology diagram, all the interfaces of the router in the figure open the ISIS protocol, which of the following statement is correct? (Multiple Choice)

• A.If the GE0/0/0 interface of R3 is down, then R2 will become the master device.
• B.If the Ethernet 0/0/0 interface of R3 is down, then R2 will become the master device.
• C.If the Ethernet 0/0/0 interface of R1 is down, then R2 will become the master device.
• D.If the Ethernet 0/0/1 interface of R1 is down, then R2 will become the master device.

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Which are the correct statements about 802.1x authentication, RADIUS and HWTACACS authentication? (Multiple Choice)

• A.RADIUS authentication and 802.1x authentication are mutually exclusive.
• B.RADIUSi authentication and HWTACACS authentication can perform dual authentication for the same user at the same time, which is more secure.
• C.Users can access the network using 802.1x authentication and complete identity authentication through Radius.
• D.RADIUS authentication and HWTACACS authentication are mutually exclusive. You cannot perform dual authentication for the same user at the same time.

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Which of the following is single package attack? (Multiple Choice)

• A.Malformed packet attack
• B.Special control packet attack
• C.Scanning detection attack
• D.DDoS attack

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The OSPFv3 protocol is a separately developed protocol. It differs from OSPFv2 in that OSPFv3 is based on links rather than network segments. Which of the following statement is incorrect?

• A.All OSPFv3 interfaces use the Link-local address as the destination address of the packet except the virtual link.
• B.The routing information obtained by the OSPFv3 router from the neighbor uses the link-local address of the neighbor as the next hop of the forwarded packet.
• C.The two routers connected to the link can establish neighbor relationships even if no unicast IPv6 address is configured.
• D.The two routers connected to the link can establish neighbor relationships even if their IPv6 address prefixes are different.

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You need to configure policy routing on the router to specify that specific traffic is forwarded through an interface. When using policy-based routing, which two types of most typical information can be used to forward traffic along a particular path?

• A.Service type header and packet length
• B.TTL and source IP address of the data packet
• C.Source IP address and specific protocols (such as FTP, HTTP, etc.)
• D.Source IP address and Layer 2 source address

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