CCNA Chp 11 Quiz and Exam

Which statement is true about Cisco IOS ping indicators?​ A combination of '.' and '!' indicates that a router along the path did not have a route to the destination address and responded with an ICMP unreachable message.​ '.' indicates that the ping was successful but the response time was longer than normal. 'U' may indicate that a router along the path did not contain a route to the destination address and that the ping was unsuccessful. '!' indicates that the ping was unsuccessful and that the device may have issues finding a DNS server.

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

A network administrator is issuing the login block-for 180 attempts 2 within 30 command on a router. Which threat is the network administrator trying to prevent?

A user attempting to guess a password to access a router.

A network technician issues the arp -d * command on a PC after the router that is connected to the LAN is reconfigured. What is the result after this command is issued?

ARP cache cleared

What is the purpose of using SSH to connect to a router?

Allow a secure remote connection to the router command line interface.

Which statement is true about CDP on a Cisco device?

CDP can be disabled globally or a specific interface

Two statements describe how to assess traffic flow patterns and network traffic types using a protocol analyser?

Capture traffic during peak utilisation times to get a good representation of the different traffic types Perform the capture on small network segments

On which two interfaces or ports can security be improved by configuring executive timeouts?

Console ports VTY ports

Which process failed if a computer cannot access the Internet and received an IP address of 169.254.142.5?

DHP

Which type of network threat is intended to prevent authorised users from accessing resources?

DoS attacks

A network administrator for a small company is contemplating how to scale the network over the next three years to accommodate projected growth. Which three types of information should be used to plan for network growth? (Choose three) human resource policies and procedures for all employees in the company documentation of the current physical and logical topologies analysis of the network traffic based on protocols, applications, and services used on the network history and mission statement of the company inventory of the devices that are currently used on the network listing of the current employees and their role in the company

Documentation of current physical and logical topologies analysis of network traffic based on protocols, apps and services used on network inventory of devices currently used on network

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

Download security updates from OS vendor and patch all vulnerable systems

Some routers and switches in a wiring closed malfunctioned after the air conditioning unit failed. What type of threat does this situation describe?

Environmental

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

Forces trace to use IPv6

Which two steps are required before SSH can be enabled on a Cisco router?

Give the router a host name and domain name Generate a set of secret keys to be used for encryption and decryption

A small company has only one router as the exit point to its ISP. Which solution could be adopted to maintain connectivity if the router itself, or its connection to the ISP, fails?

Have a second router that is connected to another ISP.

Which protocol is used by the traceroute command to send and receive echo-requests and echo-replies?

ICMP

What is the purpose of issuing the commands cd nvram: then dir at the privilege exec mode of a router?

List content of NVRAM

Which two actions can be taken to prevent a successful network attack on an email server account?

Never send passwords through the network in clear text Limit number of unsuccessful attempts to log in to the server

Refer to the exhibit. An administrator is trying to troubleshoot connectivity between PC1 and PC2 and uses the tracert command from PC1 to do it. Based on the displayed output, where should the administrator begin troubleshooting?

R1 (First * is PC to SW Second * SW1 to R1 Third * R1 to stuck)

Which network design consideration would be more important to a large corporation than a small business?

Redundancy

WHen should an admin establish a network baseline?

Regular intervals over a period of time

Refer to the exhibit. The exhibited configuration is entered by a network administrator into a new router. Sometime later a network technician proceeds to log in to the router via a console connection. The technician enters techadmin as the user name and tries a password of 63t0ut0fh3r3!. What will be the result of this action?

Router will display DT_ATC_RS3> prompt

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

Refer to the exhibit. Baseline documentation for a small company had ping round trip time statistics of 36/97/132 between hosts H1 and H3. Today the network administrator checked connectivity by pinging between hosts H1 and H3 that resulted in a round trip time of 1458/2390/6066. What does this indicate to the network administrator?

Something is causing a time delay between the networks

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

______________ defines protocols and technologies that implement transmission of voice data over an IP network.

VoIP

What type of traffic would most likely have the highest priority through the network?

Voice

Which command will backup config stored in NVRAM to a TFTP server?

copy startup-config tftp

installing virus code to destroy survelliance recordings for certain days

data loss

A newly hired network technician is given the task of ordering new hardware for a small business with a large growth forecast. Which primary factor should the technician be concerned with when choosing the new devices?

devices with support for modularity

preventing userd from accessing a website by sending a large number of link requests in a short period

disruption of service

Voltage spikes, insufficient supply voltage (brownouts) unconditioned power (noise) and total power loss:

electrical threats

Temperature extremes (too hot/cold) or humidity (too wet/dry) are examples of:

environmental threats

the show ______________ command provides info about the amount of free nvram and flash memory with the permissions for reading/writing data

file systems

What is one of the most effective security tools available for protecting users from external threats?

firewalls

Physical damage to servers, routers, switches, cabling plan and workstations are examples of:

hardware threats

pretending to be someone else by using stolen personal info to apply for a credit card

identity theft

obtaining trade secret documents illegally

info theft

A particular website does not appear to be responding on a Windows 7 computer. What command could the technician use to show any cached DNS entries for this web page?

ipconfig /displaydns

poor handling of key electrical components (electrostatic discharge) lack of critical spare parts, poor cablling and poor labling

maintenance threats

Which element of scaling a network involves identifying the physical and logical topologies?

network documentation

How should traffic flow be captured in order to best understand traffic patterns in a network?

peak utilisation times

Network services use ___________ to define a set of rules that govern how devices communicate and the data formats used in a network.

protocols

What is the purpose of network security authentication function?

require users to prove who they are

An administrator wants to back up a router configuration file to a USB drive that is connected to the router. Which command should the administrator use to verify that the USB drive is being recognized by the router?

show file systems

The ______________ command is issued on a router to verify the value of software configuration register.

show version

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

stateful packet inspection

A network administrator for a small campus network has issued the show ip interface brief command on a switch. What is the administrator verifying with this command?

the status of the switch interfaces and the address configured on interface vlan 1

A network technician is investigating network connectivity from a PC to a remote host with the address 10.1.1.5. Which command, when issued on a Windows PC, will display the path to the remote host?

tracert 10.1.1.5

Which two traffic types require delay sensitive delivery?

voice video