The fields indicating priority in the VLAN (802.1Q) data encapsulation are a total of 6 bits.

• A.True
• B.False

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Regarding the BGP anti-ring mechanism, which of the following descriptions are correct? (Multiple Choice)

• A.You can use the AS-CONFED-SET attribute to prevent loops within the federation.
• B.The Cluster List attribute is used for the anti-ring in the reflector cluster. If the router discovers that the cluster list of the route entry contains its own cluster ID, it will reject the route.
• C.Use the AS-PATH attribute between the autonomous systems to prevent loops.
• D.Routes learned from IBGP are not advertised to IBGP neighbors to prevent routing loops within the AS.

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To display the routing table of router R1, the "display ip routing-table" command was issued. Router R1 is running OSPF.
Which one of the following statements is true regarding the OSPF information in a routing table?

• A.A route that has been imported into OSPF can only be represented with an “O_ASE” designation.
• B.Type-7 LSAs display routes are imported into OSPF from another process, and are indicated by an "OSPF" marking.
• C.A routing designated with only an “O_ASE" represents either a type-1 or type-2 LSA.
• D.All LSA types have unique designations in the IP routing table.
• E.Routes that are within an area (intra-area) are marked with an “O_IA” in the routing table.

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The network administrator defines the following policy for traffic policing:

If the policy is applied to a router port and there is no traffic on the port for about 10 seconds, how many bytes of burst will be available for class cl for packets to be marked as green?

• A.32K bytes
• B.48128 bytes
• C.80128 bytes
• D.256K bytes

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A home user has opened a 10Mb/s broadband. To improve the user experience, the operator can stabilize at 12Mb/s when measuring speed. If we use token bucket technology to achieve this demand, which of the following methods is optimal?

• A.cir 10000 pir 12000
• B.cir 10000 cbs 10000 pbs 12000
• C.cir 8000 pir 12000
• D.cir 10000 cbs 12000 pbs 12000

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