16-17

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.

Refer to the exhibit. An administrator is testing connectivity to a remote device with the IP address 10.1.1.1. What does the output of this command indicate?

A router along the path did not have a route to the destination.

Which method is used to send a ping message specifying the source address for the ping?

Issue the ping command without specifying a destination IP address.

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.

A user reports a lack of network connectivity. The technician takes control of the user machine and attempts to ping other computers on the network and these pings fail. The technician pings the default gateway and that also fails. What can be determined for sure by the results of these tests?

Nothing can be determined for sure at this point.

Which command will block login attempts on RouterA for a period of 30 seconds if there are 2 failed login attempts within 10 seconds?

RouterA(config)# login block-for 30 attempts 2 within 10

What is the advantage of using SSH over Telnet?

SSH provides secure communications to access hosts.

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 the difference between a virus and a worm?

Worms self-replicate but viruses do not.

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

What is an accurate description of redundancy?

designing a network to use multiple paths between switches to ensure there is no single point of failure

What is the role of an IPS?

detecting and blocking of attacks in real time

Which component is designed to protect against unauthorized communications to and from a computer?

firewall

A user is redesigning a network for a small company and wants to ensure security at a reasonable price. The user deploys a new application-aware firewall with intrusion detection capabilities on the ISP connection. The user installs a second firewall to separate the company network from the public network. Additionally, the user installs an IPS on the internal network of the company. What approach is the user implementing?

layered

When applied to a router, which command would help mitigate brute-force password attacks against the router?

login block-for 60 attempts 5 within 60

What feature of SSH makes it more secure than Telnet for a device management connection?

login information and data encryption

Which example of malicious code would be classified as a Trojan horse?

malware that was written to look like a video game

Which type of attack involves an adversary attempting to gather information about a network to identify vulnerabilities?

reconnaissance

What type of attack may involve the use of tools such as nslookup and fping?

reconnaissance attack

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 firewall feature is used to ensure that packets coming into a network are legitimate responses to requests initiated from internal hosts?

stateful packet inspection

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

terminal monitor

Which command should be used on a Cisco router or switch to allow log messages to be displayed on remotely connected sessions using Telnet or SSH?

terminal monitor

What information about a Cisco router can be verified using the show version command?

the value of the configuration register

What is the purpose of a small company using a protocol analyzer utility to capture network traffic on the network segments where the company is considering a network upgrade?

to document and analyze network traffic requirements on each network segment

Why would a network administrator use the tracert utility?

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

A network administrator is upgrading a small business network to give high priority to real-time applications traffic. What two types of network services is the network administrator trying to accommodate? (Choose two.)

voice video

What is the purpose of the network security accounting function?

to keep track of the actions of a user

What is the purpose of the network security authentication function?

to require users to prove who they are

Which attack involves a compromise of data that occurs between two end points?

man-in-the-middle attack