A.登陆尝试失败一定次数后禁用账号
B.设置密码有效期
C.不使用明文密码
D.使用强密码

A.The OSPF area is not configured properly.
B.The priority on R1 should be set higher.
C.The cost on R1 should be set higher.
D.The hello and dead timers are not configured properly.
E.A backup designated router needs to be added to the network.
F.The OSPF process ID numbers must match.

A.Subnet strategy for private companies.
B.Manage and scale the growth of the internal network.
C.Conserve public IP addresses so that we do not run out of them.
D.Allow access reserved to the devices.

A.data link
B.network
C.transport
D.presentation
E.physical

A.中间人泄露信息
B.主机或应用程序处理非预期状况失败
C.缓冲区溢出
D.网络、主机或应用程序不能处理量非常大的数据

A.The IP address of sever 1.
B.The MAC address of NIC in sever 1.
C.The IP address of F0/0 interface of router R1.
D.The MAC address of the Fa0/0 interface of router R1.
E.The IP address of the s0/0/0 interface of router R2
F.The MAC address of the s0/0/0 interface of router R2

A.VLANs establish broadcast domains in switched networks.
B.VLANs utilize packet filtering to enhance network security.
C.VLANs provide a method of conserving IP addresses in large networks.
D.VLANs provide a low-latency internetworking alternative to routed networks.
E.VLANs allow access to network services based on department,not physical location.
F.VLANs can greatly simplify adding,moving,or changing hosts on the network.

A.physical
B.datalink
C.network
D.transport

A.病毒攻击
B.侦查攻击
C.接入攻击
D.拒绝服务攻击

A.2 through 1001
B.1 through 1001
C.1  through 1002
D.2 through 1005