Which pairing reflects a correct protocol-and-metric relationship?（）

A network administrator is planning a network installation for a large organization.The design requires 100 separate subnetworks,so the company has acquired a Class B network address.What subnet mask will provide the 100 subnetworks required, if 500 usable host addresses are required per subnet?（）

Which command is used to display the collection of OSPF link states?（）

What is the purpose of the cisco Vlan Trunking protocol?（）

An administrator must assign static IP addresses to the servers in a network.For network 192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the last usable host address. Which of the following should be entered into the IP propertied box for the sales server?（）

What is the subnetwork address for a host with the IP address 201.100.5.68/28?（）

Which protocol reduces administrative overhead in a switched network by allowing the configuration of a new VLAN to be distributed to all the switches in a domain?（）

While troubleshooting a network problem,a technician discovers that the current copy of the Cisco IOS is outdated and needs to be updated.Which of the following commands would the technician issue to replace the Cisco router IOS with the newer version?（）

Which device might be installed at a branch office to enable and manage an IPsec site-to-site VPN?（）

Which command displays the CHAP authentication process as it occurs between two routers?（）