第61題： 在大型無線網絡中，AP通常通過DHCP option（ ）來獲取AC的IP地址。
A.43
B.60
C.66
D.138
答案解析與討論：m.pokkc.com/st/4581629497.html

第62題： 網絡規(guī)劃中，冗余設計不能（ ）。
A.提高鏈路可靠性
B.增強負載能力
C.提高數據安全性
D.加快路由收效
答案解析與討論：m.pokkc.com/st/4581716055.html

第63題： 某公司局域網使用DHCP動態(tài)獲取10.10.10.1/24網段的IP地址，某天公司大量終端獲得了192.168.1.0/24網段的地址，可在接入交換機上配置（ ）功能杜絕該問費再次出現。
A.dhcp relay
B.dhcp snooping
C.mac-address static
D.arp static
答案解析與討論：m.pokkc.com/st/4581817807.html

第64題： Network security is the protection of the underlying networkinginfrastructur ( ) access, misuse, or theft. It involves creating a secureinfrastructure for device and applications to work in a ( ) manner.
Network security combines multiple defenses at the edge and in thenetwork. Each network security layer implements( )controls.Authorized users gain access to network resources. A( ) is a networdevice that monitors incoming and outgoing network traffic and decideswhetherblock specific trffic based on a defined set of security rules. Avirtual ( )encrypts the connection from an endpoint to a network,often over the internet.remote-aceess VPN uses IPsee or Seeure Soekets Layer to aufhenticate thebetween device and network.
(1)A.unauthorized
B.authorized
C.normal
D.frequent
(2)A.economical
B.secure
C.fair
D.efficient
(3)A.computing
B.tanstation
C.policies
D.simulations
(4)A.firewall
B.router
C.gateway
D.switch
(5)A.public
B.private
C.personal
D.political
答案解析與討論：m.pokkc.com/st/458207638.html

第50題： PC1的IP地址為192.168.5.16，PC2的IP地址為192.168.5.100，PC1和PC2在同一網段中，其子網掩碼可能是（）
A.255.255.255.240
B.255.255.255.224
C.255.255.255.192
D.255.255.255.128答案解析與討論：m.pokkc.com/st/459672677.html