[多选题]Ezonexam is migrating to a private IP addressing scheme. Which of the following describe the use of private IP addresses? (Choose two)

正确答案 ：BD

Addresses that cannot be routed through the public Internet.

A scheme to conserve public addresses.

解析：解析：Explanation:

[单选题]The IP network 210.106.14.0 is subnetted using a /24 mask. How many usable networks and host addresses can be obtained from this?

正确答案 ：A

1 network with 254 hosts

解析：解析：Explanation:Asubnetwith24bitsonwouldbe255.255.255.0.SincethisisaclassCnetwork,thissubnetcanhaveonly1networkand254usablehosts.

[单选题]IP地址为：192.168.50.70，掩码为：255.255.255.248，则该IP和掩码结合，共划分了多少个子网（不包括全0子网和全1子网）（）

正确答案 ：B

30

[单选题]The Ezonexam LAN is upgrading all devices to operate in full duplex. Which statement is true about full-duplex Ethernet in comparison to half-duplex Ethernet?

正确答案 ：C

Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth

[单选题]“ipaccess-group”命令在接口上缺省的应用方向是什么"（）。

正确答案 ：C

out

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