Cisco CCNA mock exam questions sample test – Question 15

.You are the network administrator for your company. You have installed a new router in your network. You want to establish a remote connection from your computer to the new router
so it can be configured. You are not concerned about security during the remote connection.
Which Cisco IOS command should you use to accomplish the task?

A. ssh
B. telnet
C. terminal
D. virtual

Correct Answer: B

Explanation:
The telnet command should be used to establish a remote connection from your computer to the router. The syntax of the command is as follows:
telnet {{hostname | IP_address mask interface_name} | {IPv6_address interface_name} | {timeoutnumber}}
The following parameters are used with the telnet command:
hostname: Specifies the name of the host.
interface_name: Specifies the name of the network interface to which you need to telnet.
IP_address: Specifies the IP address of the host.
IPv6_address: Specifies the IPv6 address associated to the host.
timeout number: Specifies the number of minutes that a telnet session can be idle.
The following features are the key characteristics of Telnet:
It is a client server protocol.
It uses TCP port number 23.
It is used to establish a remote connection over the internet or Local Area Network (LAN).
Telnet does not encrypt any data sent over the connection; that is, the data travels in clear text.
A Cisco router supports five simultaneous telnet sessions, by default. These lines are called vty 0-4.
A successful Telnet connection requires that the destination device be configured to support Telnet connections, which means it must be configured with a Telnet password.
The telnet command can also be used to test application layer connectivity to a device.
The ssh command is incorrect because this command is used to remotely establish a secure connection between two computers over the network.
The terminal command is incorrect because this command is used to change console terminal settings.
The virtual command is incorrect because this command is used along with the http and telnet parameters to configure a virtual server.

Objective:
Infrastructure Management

Sub-Objective:
Configure and verify device management

References:
Cisco > Cisco IOS Terminal Services Command Reference > telnet