CCNA 1 v7 Modules 16 - 17: Building and Securing a Small Network

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Which statement is true about Cisco IOS ping indicators?​

'U' may indicate that a router along the path did not contain a route to the destination address and that the ping was unsuccessful.

What is considered the most effective way to mitigate a worm attack?

Download security updates from the operating system vendor and patch all vulnerable systems.

Which statement describes the ping and tracert commands?

Tracert shows each hop, while ping shows a destination reply only.

A student wants to save a router configuration to NVRAM. What is the best command to use to accomplish the task?

copy running-config startup-config

An administrator is troubleshooting connectivity issues and needs to determine the IP address of a website. What is the best command to use to accomplish the task?

nslookup

A network engineer is troubleshooting connectivity issues among interconnected Cisco routers and switches. Which command should the engineer use to find the IP address information, host name, and IOS version of neighboring network devices?

show cdp neighbors detail

Which command can an administrator issue on a Cisco router to send debug messages to the vty lines?

terminal monitor

Why would a network administrator use the tracert utility?

to identify where a packet was lost or delayed on a network

Which network service automatically assigns IP addresses to devices on the network?

Dynamic Host Configuration Protocol (DHCP)

By following a structured troubleshooting approach, a network administrator identified a network issue after a conversation with the user. What is the next step that the administrator should take?

Establish a theory of probable causes.

A network technician issues the C:\> tracert -6 www.cisco.com command on a Windows PC. What is the purpose of the -6 command option?

It forces the trace to use IPv6.

An administrator decides to use "pR3s!d7n&0" as the password on a newly installed router. Which statement applies to the password choice?

It is strong because it uses a minimum of 10 numbers, letters and special characters.

An administrator decides to use "WhatAreyouwaiting4" as the password on a newly installed router. Which statement applies to the password choice?

It is strong because it uses a passphrase.

An administrator decides to use "password" as the password on a newly installed router. Which statement applies to the password choice?

It is weak because it is a commonly used password.

An administrator decides to use "admin" as the password on a newly installed router. Which statement applies to the password choice?

It is weak because it is often the default password on new devices.

A ping fails when performed from router R1 to directly connected router R2. The network administrator then proceeds to issue the show cdp neighbors command. Why would the network administrator issue this command if the ping failed between the two routers?

The network administrator wants to verify Layer 2 connectivity.

What is a characteristic of UDP?

UDP reassembles the received datagrams in the order they were received.

A network engineer is analyzing reports from a recently performed network baseline. Which situation would depict a possible latency issue?

an increase in host-to-host ping response times

A teacher is having difficulties connecting his PC to the classroom network. He needs to verify that a default gateway is configured correctly. What is the best command to use to accomplish the task?

ipconfig

Users are complaining that they are unable to browse certain websites on the Internet. An administrator can successfully ping a web server via its IP address, but cannot browse to the domain name of the website. Which troubleshooting tool would be most useful in determining where the problem is?

nslookup

Students who are connected to the same switch are having slower than normal response times. The administrator suspects a duplex setting issue. What is the best command to use to accomplish the task?

show interfaces

A network technician is troubleshooting an issue and needs to verify the IP addresses of all interfaces on a router. What is the best command to use to accomplish the task?

show ip interface brief

Which command can an administrator execute to determine what interface a router will use to reach remote networks?

show ip route

A network technician is troubleshooting an issue and needs to verify all of the IPv6 interface addresses on a router. What is the best command to use to accomplish the task?

show ipv6 interface

An administrator decides to use "Feb121978" as the password on a newly installed router. Which statement applies to the password choice?

It is weak because it uses easily found personal information.

A technician is to document the current configurations of all network devices in a college, including those in off-site buildings. Which protocol would be best to use to securely access the network devices?

SSH

A user wants to know the IP address of the PC. What is the best command to use to accomplish the task?

ipconfig

A support technician needs to know the IP address of the wireless interface on a MAC. What is the best command to use to accomplish the task?

ipconfig getifaddr en0

An administrator decides to use "12345678!" as the password on a newly installed router. Which statement applies to the password choice?

It is weak because it uses a series of numbers or letters.

An administrator decides to use "RobErT" as the password on a newly installed router. Which statement applies to the password choice?

It is weak since it uses easily found personal information.

Only employees connected to IPv6 interfaces are having difficulty connecting to remote networks. The analyst wants to verify that IPv6 routing has been enabled. What is the best command to use to accomplish the task?

show running-config


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