A. Subnet mask does not match the

B. Insufficient link bandwidth

C. The IP addresses on both ends are not on the same network segment

D. The link layer protocols on both ends are inconsistent

A. If the data packet source lIP address is 1001.2, it can be forwarded with the DSCP field marked CS3

B. If the packet source IP address is 1001.2, it cannot be forwarded

C. If the packet source IP address is 1001.1, it can be forwarded while the DSCP field is marked as CS3

D. If the packet source IP address is 1001.2, it can be forwarded while the DSCP field remains unchanged

A. When the interface layer two operating mode must be hybird

B. When fixed registration mode is selected, the interface cannot propagate dynamic VLANs

C. When the normal registration mode is selected, allow the interface to dynamically register and unregister the VLAN. Logout here includes deleting dynamically learned VLANs and VLANs created natively by the administrator

D. GVRP when the register mode with forbidden is selected, there are four types of interface registration mode

A. ISIS's GR notifies of events and maintains neighbor relationships through CSNP messages.

B. ISIS's GR defines a new TLV structure to support this feature.

C. The GR feature of AISIS is turned on by default.

D. ISIS's GR has a total of four timers.

A. The token bucket algorithm is used for traffic supervision, and the SPD algorithm is used for traffic shaping

B. For traffic policing, the usage of the buffer can be adjusted for traffic exceeding the CIR

C. For traffic shaping, it can be over-CIR Traffic adjustment for the usage of the buffer

D. Traffic shaping is applied in the inlet direction and traffic supervision is applied in the outlet direction

E. For traffic shaping, the router caches excess packets until bandwidth is available again