在网络安全中，对一些硬件进行破坏、切断通信线路或禁用文件管理系统，这被称为（)。A．中断B．截断C．

A. Additional DHCP options will be imported from another DHCP server.

B. The DHCP server pools need to be bound to an interface to operate.

C. This configuration will provide IP configuration information to two different su bnets.

D. Additional DCHP option information needs to be imported from another DHCP server.

E. If the router hands out all the addresses in pool 1, then it will supply addresses from pool 2.

A. The first DHCP client to connect to the FastEthernet 0/1 interface will receive the IP address 10.10.0.1.

B. DHCP requests received on the FastEthernet 0/1 interface will be forwarded to 10.0.0.2.

C. The first DHCP client to connect to the FastEthernet 0/0 interface will receive the IP a ddress 10.0.0.1

D. The first DHCP client to connect to the FastEthernet 0/0 interface will receive the IP address 10.0.0.6.

E. Hosts connected to the FastEthernet0/1 interface will not receive DHCP replies from the router.

A．10.0.0.0

B．10.0.0.254

C．192.223.129.0

D．192.223.129.254

A. DHCPDISCOVER packets will reach the DHCP server.

B. The router will not forward DHCPDIS COVER packets because it has not been configured to do so.

C. This configuration is applied to interface Fa0/1.

D. DHCPDISCOVER packets will not reach the DHCP server because DHCPDISCOVER packets are broadcasts.

E. DHCPDISCOVER packets will not reach the DHCP server because ports 67 and 68 have not been explicitly allowed by the ip forward - protocol command.

F. This configuration is applied to interface Fa0/0.

A. Hosts belonging to DHCP pool 1 and pool 2 will retain their IP settings for 30 hours before they must renew.

B. Hosts will receive IP settings from pool 1 until the addresses run out, and then hosts will receive the settings from pool 2.

C. Hosts in the 10.10.20.0/24 subnet will u se 10.10.20.50 as its DNS server.

D. DHCP pool 0 needs to have the ip dhcp excluded - address command to exclude the default router and DNS servers.

A. DHCP requests from the host will be rebroadcasted to R2.

B. To complete t his configuration, the R1 fa0/0 interface must be configured with the ip helper - addresses command.

C. To complete this configuration, the R2 fa0/0 interface must be configured with the ip helper -addresses command.

D. R1 will forward all DHCP requests t o both 192.168.100.1 and 192.168.200.1 as unicast messages.

E. R1 will forward DHCP requests to 192.168.100.1. If there is no response, R1 will then forward the requests to 192.168.200.1.

In the last sentence of the third passage, to which of the following does "it" refer？

A．Yellow "hump".

B．Day.

C．Sun.

D．Hydrogen fuel.

Which of the following pie charts does the man refer to？

A．

B．

C．

What does the word "which" in line 3 of the third paragraph refer to？

A．Bullet-proof vests

B．kite" string"

C．The kite

D．Kevlar

A．255.255.255.0

B．255.255.254.0

C．255.255.252.0

D．255.255.248.0