Your customer wants to build a network for a financial trading floor that has a requirement for multiple high-value transactions, which are also vital to the customer. What are the two most critical requirements? （）(Choose two.)

单项选择题Refer to the exhibit. For interface FastEthernet0 0, what will happen to dscp af11 traffic if the queue for class newclass reaches a depth of 40?（）

A. All packets will be dropped.
B. One out of ten packets will be dropped.
C. A random number of packets will be dropped.
D. No packets will be dropped until the queue depth reaches 265.
E. Packets will be dropped according to the exponential weight setting.

单项选择题Refer to the exhibit. For interface FastEthernet0 0, what will happen to dscp af11 traffic if the queue for class newclass reaches a depth of 32? （）

A. All packets will be dropped.
B. One out of ten packets will be dropped.
C. A random number of packets will be dropped.
D. No packets will be dropped until the queue depth reaches 40.
E. Packets will be dropped according to the exponential weight setting.

单项选择题Refer to the exhibit. A display of class maps for a configuration is shown in the exhibit. What will the class-map all-traffic match? （）

A. all voice traffic
B. all traffic with dscp 18 or dscp 43
C. all traffic with dscp 18 and dscp 43
D. all traffic with ip precedence 0 or 1
E. all traffic with ip precedence 4 and 5

单项选择题While troubleshooting a network outage, you discover that an employee brought a switch from home into the office to connect additional equipment to the network. In order to increase his speed, he connected this switch to both network ports in his office, resulting in a bridge loop. Which of these can you implement to prevent future occurrences of this issue?（）

A.RSTP
B.root guard
C.BPDU guard
D.GLBP

单项选择题Refer to the exhibit. MPLS has been enabled on router PE11. Which of these statements is correct regarding the output display shown in the exhibit? （）

A. CEF switching is not needed for MPLS operation.
B. CEF switching is only needed to forward labeled packets.
C. CEF switching is needed on both ingress and egress interfaces on which MPLS is enabled.
D. Interface-level CEF switching is needed only on egress interfaces that are sending IP packets on which the egress LSR performs the label imposition process.
E. Interface-level CEF switching is needed only on ingress interfaces that are receiving IP packets on which the ingress LSR performs the label imposition process.