Cisco Networking

Which two ports can be used for the initial configuration of a Cisco router?

AUX console

The three basic steps for powering up a switch are as follows:

Check the components. Connect the cables to the switch. Power up the switch.

What happens when the transport input ssh command is entered on the switch vty lines?

Communication between the switch and remote users is encrypted.

A network administrator enters the service password-encryption command into the configuration mode of a router. What does this command accomplish?

This command prevents someone from viewing the running configuration passwords.

Console ports

Two console ports for the initial configuration and command-line interface (CLI) management access using a regular RJ-45 port and a USB Type-B (mini-B USB) connector.

While troubleshooting a network problem, a network administrator issues the show version command on a router. What information can be found by using this command?

the amount of NVRAM, DRAM, and flash memory installed on the router

In-band Management

monitor and make configuration changes to a network device over a network connection. Either Telnet, HTTP or SSH can be used to access a Cisco device

Which command would a technician use to display network connections on a host computer?

netstat

RAM

provides temporary storage of the running configuration file

Cisco device loads the following two files into RAM when it is booted

IOS image file Startup configuration file

What is the first action in the boot sequence when a switch is powered on?

POST or power-on self-test

When a switch is plugged in to an outlet, the POST begins. How do you know POST has completed?

SYS LEDs rapidly blink green

Which switch selection factor are you typically considering when deciding on the type of uplink ports?

Speed required

When a router is powered on, where will the router first search for a valid IOS image to load by default?

flash memory

What is a way to remotely access the command-line interface (CLI) over a network interface?

SSH access

Which two networking devices are used in enterprise networks for providing network connectivity to end devices?

Wireless access points (AP) and LAN switches

What is required for a network administrator to perform out-of-band management tasks on a Cisco device?

a computer directly connected to the console port of the device

Which keys act as a hot key combination that is used to interrupt an IOS process?

Ctrl-Shift-6

Which switch selection factor are you typically considering when deciding that you want the switch to be configurable?

Manageability

Which switch selection factor are you typically considering when deciding between modular or fixed configurations?

Expandability

Where is the IOS image file typically stored?

Flash memory

Which two files are loaded into RAM of a Cisco switch when it is booted?

IOS image file startup configuration file

What is the effect of using the Router# copy running-config startup-config command on a router?

The contents of NVRAM will change.

Two LAN interfaces

Two Gigabit Ethernet interfaces for LAN access labeled GE 0/0/0 and GE 0/0/1. The GE 0/0/0 port can be accessed through an RJ-45 connection or by using a small form-factor pluggable (SFP) attachment to provide a fiber-optics connection.

Network Interface Modules (NIMs)

Two NIM expansion slots that provide modularity and flexibility by enabling the router to support different types of interface modules, including serial, digital subscriber line (DSL), switch ports, and wireless.

Which switch selection factor are you typically considering when deciding on interfaces that support twisted-pair connections?

Type of ports

When choosing a switch, there are a number of factors to consider

Type of ports Speed required Expandability Manageability

Out-of-band management

requires a computer to be directly connected to the console port of the network device that is being configured. This type of connection does not require the local network connections on the device to be active.

Which interface uses telephone lines and modems to remotely manage a router?

auxiliary port

Privileged EXEC Mode

can be identified by the prompt ending with the # symbol.

Which interface uses USB or a low-speed, serial connection to manage network devices?

console port

Which two ports are typically used for device management?

console port storage port

startup configuration file

contains commands that are used to initially configure a router and switch and create the running configuration file stored in RAM. is stored in NVRAM.

show running-config

displays the contents of the currently running configuration file located in RAM.

show startup-config

displays the saved configuration located in NVRAM

A small office uses a wireless router to connect to a cable modem for Internet access. The network administrator receives a call that one office computer cannot access external websites. The first troubleshooting step that the network administrator performs is to ping the wireless router from the office computer. Which troubleshooting technique does this represent?

divide-and-conquer

User EXEC Mode

his mode has limited capabilities but is useful for basic operations. It allows only a limited number of basic monitoring commands but does not allow the execution of any commands that might change the configuration of the device

Cisco IOS Command Line Interface

is a text-based program that enables entering and executing Cisco IOS commands to configure, monitor, and maintain Cisco devices can be used with either in-band or out-of-band management

ROM

is used to store bootup instructions, basic diagnostic software, and a copy of a limited IOS. NVRAM stores the startup configuration file

Flash

is used to store the full Cisco IOS on a device.

two methods to connect a PC to a network device to perform configuration and monitoring tasks:

out-of-band management and in-band management.