CCNA系列認(rèn)證CCNA(640-802)章節(jié)練習(xí)(2019.10.23)

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

A. remote DLCI on the main interface
B. local DLCI on the main interface
C. local DLCI on the subinterface
D. remote DLCI on the subinterface

A.It is locally significant.
B.It is globally significant.
C.It is needed to identify a unique instance of an OSPF database.
D.It is an optional parameter required only if multiple OSPF processes are running on the router.
E.All routers in the same OSPF area must have the same process ID if they are to exchange routing information.

A.ARP
B.CDP
C.DHCP
D.DNS
E.ICMP

A. Addresses are allocated after a negotiation between the server and the host to determine the length of the agreement.
B. Addresses are assigned for a fixed period of time.At the end of period,a newquest for an address must be made ,and another address is then assigned.
C. Addresses are leased to host.A host will usually keep the same address by periodically contacting the DHCP sever to renew the lease.
D. Addresses are permanently assigned so that the host uses the same address at all times.

A. show ip access-list
B. show access-list
C. list ip interface
D. show interface
E. show ip interface

A.RIP
B.BGP
C.OSPF
D.EIGRP

A.The switch will not forward unicast frames.
B.The switch will forward the frame to a specific port.
C.The switch will return a copy of the frame out the source port.
D.The switch will remove the destination MAC from the switch table.
E.The switch will forward the frame to all ports except the port on which it was received.

A.application layer
B.session layer
C.transport layer
D.network layer
E.datalink layer
F.physical layer

A. copy running-config startup-config
B. copy startup-config: running-config
C. copy running config startup config
D. copy startup config running config
E. write terminal