CCNA Intro to networks modules 16-17
detecting and blocking of attacks in real time
What is the role of an IPS?
video voice
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.)
an increase in host-to-host ping response times
A network engineer is analyzing reports from a recently performed network baseline. Which situation would depict a possible latency issue?
show cdp neighbors detail
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?
It forces the trace to use IPv6.
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?
The network administrator wants to verify Layer 2 connectivity.
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?
ipconfig getifaddr en0
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?
ssh
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?
layered
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?
Nothing can be determined for sure at this point.
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?
It is strong because it uses a passphrase.
An administrator decides to use "WhatAreyouwaiting4" as the password on a newly installed router. Which statement applies to the password choice?
The PC is configured to obtain an IP address automatically. The PC cannot contact a DHCP server.
An employee complains that a Windows PC cannot connect to the Internet. A network technician issues the ipconfig command on the PC and is shown an IP address of 169.254.10.3. Which two conclusions can be drawn? (Choose two.)
Establish a theory of probable causes.
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?
console ports vty ports
On which two interfaces or ports can security be improved by configuring executive timeouts? (Choose two.)
login information and data encryption
What feature of SSH makes it more secure than Telnet for a device management connection?
the value of the configuration register
What information about a Cisco router can be verified using the show version command?
Download security updates from the operating system vendor and patch all vulnerable systems.
What is considered the most effective way to mitigate a worm attack?
SSH provides secure communications to access hosts.
What is the advantage of using SSH over Telnet?
Worms self-replicate but viruses do not.
What is the difference between a virus and a worm?
to require users to prove who they are
What is the purpose of the network security authentication function?
Generate the asymmetric RSA keys. Configure the correct IP domain name. Create a valid local username and password database.
When configuring SSH on a router to implement secure network management, a network engineer has issued the login local and transport input ssh line vty commands. What three additional configuration actions have to be performed to complete the SSH configuration? (Choose three.)
man-in-the-middle attack
Which attack involves a compromise of data that occurs between two end points?
show ip route
Which command can an administrator execute to determine what interface a router will use to reach remote networks?
terminal monitor
Which command can an administrator issue on a Cisco router to send debug messages to the vty lines?
malware that was written to look like a video game
Which example of malicious code would be classified as a Trojan horse?
stateful packet inspection
Which firewall feature is used to ensure that packets coming into a network are legitimate responses to requests initiated from internal hosts?
Issue the ping command without specifying a destination IP address.
Which method is used to send a ping message specifying the source address for the ping?
dhcp
Which network service automatically assigns IP addresses to devices on the network?
Tracert shows each hop, while ping shows a destination reply only.
Which statement describes the ping and tracert commands?
'U' may indicate that a router along the path did not contain a route to the destination address and that the ping was unsuccessful.
Which statement is true about Cisco IOS ping indicators?
to identify where a packet was lost or delayed on a network
Why would a network administrator use the tracert utility?