A. anycast framesB. multicast framesC. broadcast frames……

单项选择题Which pairing reflects a correct protocol-and-metric relationship?（）

A. OSPF and mumber of hops and reliability
B. EIGRP and link cost
C. IS-IS and delay and reliability
D. RIPv2 and number of hops

单项选择题Which name describes an IPV6 host-enable tunneling technique that uses IPV4 UDP,does not require dedicated gateway tunnels,and can pass through existing IPV4 NAT gateways?（）

A. dual stack
B. dynamic
C. Teredo
D. Manual 6to4

单项选择题Which Cisco IOS diagnostics command can disrupt the operation of a router under high-load conditions?（）

A. show running-config
B. show processes cpu
C. debug all
D. logging host ip address

单项选择题Which command encrypts all plaintext passwords?（）

A. Router(config)#password-encryption
B. Router(config)#service password-encryption
C. Router#service password-encryption
D. Router# password-encryption

单项选择题Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?（）

A. IETF
B. HDLC
C. Q9333-A Annex A
D. ANSI Annex D