To which switch or switches should you provide redundant links in order to achieve high availability with reliable fast convergence in the enterprise campus?（）

单项选择题When a router has to make a rate transition from LAN to WAN, what type of congestion needs should be considered in the network design?（）

A. RX-queue deferred
B. TX-queue deferred
C. RX-queue saturation
D. TX-queue saturation
E. RX-queue starvation
F. TX-queue starvation

多项选择题Which two practices will avoid Cisco Express Forwarding polarization?（）

A. The core layer should use default Layer 3 hash information.
B. The core layer should use default Layer 4 hash information.
C. The distribution layer should use default Layer 3 hash information.
D. The distribution layer should use default Layer 4 hash information.
E. The core layer should use Layer 3 and Layer 4 information as input to the Cisco Expressing Forwarding hashing algorithm.
F. The distribution layer should use Layer 3 and Layer 4 information as input into the Cisco Expressing Forwarding hashing algorithm.

多项选择题Which two statements correctly identify considerations to take into account when deciding on Campus QoS Design elements?（）

A. Voice needs to be assigned to the hardware priority queue.
B. Voice needs to be assigned to the software priority queue.
C. Call signaling must have guaranteed bandwidth service.
D. Strict-priority queuing should be limited to 50 percent of the capacity of the link.
E. At least 33 percent of the link bandwidth should be reserved for default best-effort class.

单项选择题Which version of spanning tree is recommended for the enterprise campus?（）

A.CST
B.MST
C.STP
D.PVST+
E.RPVST+

多项选择题Under which two circumstances should Spanning Tree Protocol be implemented?（）

A. to ensure a loop-free topology
B. to protect against user-side loops
C. when a VLAN spans access layer switches
D. for the most deterministic and highly available network topology
E. because of the risk of lost connectivity without Spanning Tree Protocol