出于管理目的使用 Telnet 或 SSH 连接到网络设备的区别是什么？ What is one difference between using Telnet or SSH to connect to a network device for management purposes?
A. Telnet 支持主机 GUI，而 SSH 仅支持主机 CLI。 Telnet supports a host GUI whereas SSH only supports a host CLI.
B. Telnet 以纯文本形式发送用户名和密码，而 SSH 对用户名和密码进行加密。 Telnet sends a username and password in plain text, whereas SSH encrypts the username and password.
C. Telnet 使用 UDP 作为传输协议，而 SSH 使用 TCP。 Telnet uses UDP as the transport protocol whereas SSH uses TCP.
D. Telnet 不提供身份验证，而 SSH 提供身份验证。 Telnet does not provide authentication whereas SSH provides authentication.
查看答案
请参见图示。网络技术人员正在为 PC 静态分配 IP 地址。默认网关是正确的。分配给主机的有效 IP 地址是什么？ Refer to the exhibit. A network technician is statically assigning an IP address to a PC. The default gateway is correct. What would be a valid IP address to assign to the host?
A. 128.108.100.10 128.108.100.10
B. 128.107.255.254 128.107.255.254
C. 128.107.255.1 128.107.255.1
D. 128.106.10.100 128.106.10.100
在交换机 vty 线路上输入transport input ssh 命令时会发生什么？ What happens when the transport input ssh command is entered on the switch vty lines?
A. 交换机上的 SSH 客户端已启用。 The SSH client on the switch is enabled.
B. 交换机需要用户名 / 密码组合才能进行远程访问。 The switch requires a username/password combination for remote access.
C. 交换机需要通过专有客户端软件进行远程连接。 The switch requires remote connections via a proprietary client software.
D. 交换机和远程用户之间的通信是加密的。 Communication between the switch and remote users is encrypted.
公司政策要求使用最安全的方法来保护对路由器上特权执行和配置模式的访问。特权 exec 密码是 trustknow1。以下哪个路由器命令达到了提供最高安全级别的目标？ Company policy requires using the most secure method to safeguard access to the privileged exec and configuration mode on the routers. The privileged exec password is trustknow1. Which of the following router commands achieves the goal of providing the highest level of security?
A. enable secret trustknow1
B. enable password trustknow1
C. service password-encryption
D. secret password trustknow1
可以使用哪个命令对配置文件中的所有密码进行加密？ Which command can be used to encrypt all passwords in the configuration file?
A. service password-encryption
B. enable password
C. enable secret
D. password
微信支付 
支付宝支付