CCNA ITN: Chapter 13 ICMP

What is a network baseline?

A measurement of the average traffic over a network during a specific interval of time

Which statement is true about CDP on a Cisco device?

CDP can be disabled globally or on a specific interface.

Which two statements describe how to assess traffic flow patterns and network traffic types using a protocol analyzer? (Choose two.)

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

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

DoS attacks

If a configuration file is saved to a USB flash drive attached to a router, what must be done by the network administrator before the file can be used on the router?

Edit the configuration file with a text editor.

Which two steps are required before SSH can be enabled on a Cisco router? (Choose two.)

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

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

It allows a secure remote connection to the router command line interface.

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.

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

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

Which protocol supports rapid delivery of streaming media?

RTP

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?

The ARP cache is cleared

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 service defines the protocols and technologies that implement the transmission of voice packets over an IP network?

VoIP

________ defines the protocols and technologies that implement the transmission of voice data over an IP network

VoIP

Which WLAN security protocol generates a new dynamic key each time a client establishes a connection with the AP?

WPA

Which two statements characterize wireless network security? (Choose two.)

With SSID broadcast disabled, an attacker must know the SSID to connect. Using the default IP address on an access point makes hacking easier.

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 who is trying to guess a password to access the router

What is a security feature of using NAT on a network?

allows internal IP addresses to be concealed from external users

When should an administrator establish a network baseline?

at regular intervals over a period of time

What do WLANs that conform to IEEE 802.11 standards allow wireless users to do?

connect wireless hosts to hosts or services on a wired Ethernet network

A network administrator has determined that various computers on the network are infected with a worm. Which sequence of steps should be followed to mitigate the worm attack?

containment, inoculation, quarantine, and treatment

Which command will backup the configuration that is stored in NVRAM to a TFTP server?

copy startup-config tftp

Which type of network attack involves the disabling or corruption of networks, systems, or services?

denial of service attacks

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

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

during peak utilization times

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

environmental

The show __________ command provides information about the amount of free nvram and flash memory with the permissions for reading or writing data.

file systems

A network administrator checks the security log and notices there was unauthorized access to an internal file server over the weekend. Upon further investigation of the file system log, the administrator notices several important documents were copied to a host located outside of the company. What kind of threat is represented in thi

information theft

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.)

inventory of the devices that are currently used on the network documentation of the current physical and logical topologies analysis of the network traffic based on protocols, applications, and services used on the network

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

redundancy

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

stateful packet inspection

Which two statements about a service set identifier (SSID) are true? (Choose two.)

tells a wireless device to which WLAN it belongs all wireless devices on the same WLAN must have the same SSID

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

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

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

to list the content of the NVRAM

What is the purpose of the network security authentication function?

to require users to prove who they are

Which two traffic types require delay sensitive delivery? (Choose two.)

voice video