Policy-based routing allows network administrators to implement routing policies to allow or deny paths based on all of these factors except which one？（）

Two directly connected routers， R1 and R2， are both configured for OSPF graceful restart. R2 is able to switch packets in hardware， but R1 is not. If a network administrator logs on to R2 and performs a system reload， which will be the result？（）

What does a unicast prefix-based IPv6 multicast address start with？（）

Which switch port error is an indication of duplex mismatches on 10/100/1000 IEEE 802.3u  Gigabit Ethernet ports？（）

In which way can the IPv6 address of 2031：0000：130F：0000：0000：09C0：876A：130B be expressed most efficiently？（）

You are the network administrator of a Layer 3 switched network. Users in one VLAN are complaining that access to the server VLAN is very slow from time to time. Traffic in the local VLAN works without any issue， and users in other VLANs do not have any complaint to reach the server VLAN. What is most likely the cause of this issue？（）

Which three statements are true about policing？ （）

For the following items，what is the mathematical relationship between the committed information  rate （CIR）， committed burst （Bc）， and committed rate measurement interval （Tc）？（）

For the following ports， which port is on every bridge in a Spanning Tree Protocol IEEE 802.1w network except the root bridge？（）

What is the command to configure RSVP to reserve up to one-tenth of a Gigabit link， but only allow each individual flow to use 1 MB/s？（）