Selected Answer: AD A) Yes. The spanning tree algorithm used by MSTP is RSTP which gives quick convergence. B) No. 802.1s is from IEEE, not Cisco. C) No. 802.1s has a maximum of 16 RSTP instances. D) Yes. One or more VLANs can be mapped to one MSTP instance E) No. The CPU and memory requirements are less than for Rapid PVST+ but more than for RSTP. https://www.ciscopress.com/articles/article.asp?p=2832407&seqNum=5 https://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/24248-147.html

Selected Answer: BD A. 802.1s provides for faster convergence over 802.1D and PVST+: This is incorrect. 802.1s is not specifically meant for faster convergence. Rapid Spanning Tree Protocol (RSTP) or 802.1w is the protocol that gives faster convergence compared to the original Spanning Tree Protocol (STP) or 802.1D. B. 802.1s is a Cisco enhancement to 802.1w: This is correct. 802.1s, also called Multiple Spanning Tree Protocol (MSTP), is an enhancement to 802.1w RSTP. It lets multiple VLANs be mapped to the same spanning-tree instance, which gives better scalability and cuts down the number of spanning-tree instances needed.

802.1s gives faster convergence than 802.1D and PVST+ 802.1s is a Cisco enhancement to 802.1w. 802.1s supports up to 1024 instances of 802.1w. 802.1s maps multiple VLANs to the same spanning-tree instance. CPU and memory requirements are the highest among all spanning-tree STP implementations.

Selected Answer: BC BCD is correct

BD. C is not, because the mst's maximum instances are 16

Selected Answer: CD C and D apply only to MST while A is generally true about MST and mapping many instances to a single Process could also be done with CST as well. Please correct me if I'm wrong. E is wrong in every sense. you usually pick MST to save on CPU and MEM. Answers CD

Selected Answer: CD The answer is CD

Selected Answer: AD AD IEEE standard, so B is wrong supports 128 instances C wrong