The following description of the process of sending and receiving data frames in switch interface Access mode is correct? ( Single choice questions).

In Access mode, labeled data frames are discarded directly when they are received.
Access mode strips off the VLAN tag of the dataton when sending .
Access mode receives only unlabeled data frames.
When a data frame enters the switch interface, the switch learns the destination MAC address in the data frame.

Answer(s): B

The following description of the characteristics of cross-domain VN-Optionc is correct?

A maximum of two layers of tags need to be used in the message forwarding process.
VPMV4 routes are not saved on the ASBR, and VPNv routes are not advertised to each other.
VPN routes are exchanged directly between the ingress PE and egress PE and do not require an intermediate device to secure a circular VPN route.
Cross-domain VN-Optionc, which is not suitable for use when spanning multiple AS.

Answer(s): B,C

ipv6 link-local addresses can be generated through stateless autoconfiguration

Answer(s): B

Regarding the MPLS basic forwarding process, the following description is incorrect? Radio

By default, the PHP-enabled Erass node assigns a label value of 3 to the inverted second-hop node.
When an IP message enters the MPLS domain, the MPLS boundary device inserts a new label between the layer 2 header and the IP header.
When the P message enters the MPLS domain, check whether the Tunel lD value corresponding to the destination IP address is Ox0O If the Tunel IlD value is Ox0 Then enter the MPLS forwarding process.
The transport node device replaces the existing top-of-stack label (outermost label) with the label assigned by the next hop device.

Answer(s): C

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