CCNA 1 Chapter 11 V5.0 Answers

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

to clear the content of the NVRAM

to direct all new files to the NVRAM

to list the content of the NVRAM

to copy the directories from the NVRAM


2. Fill in the blank.

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


3. 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 this scenario?

data loss

identity theft

information theft

disruption of service


4. When should an administrator establish a network baseline?

when the traffic is at peak in the network

when there is a sudden drop in traffic

at the lowest point of traffic in the network

at regular intervals over a period of time


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

Never send the password through the network in a clear text.

Never use passwords that need the Shift key.

Never allow physical access to the server console.

Only permit authorized access to the server room.

Limit the number of unsuccessful attempts to log in to the server.


6. Which statement is true about CDP on a Cisco device?​

The show cdp neighbor detail command will reveal the IP address of a neighbor only if there is Layer 3 connectivity​.

To disable CDP globally, the no cdp enable command in interface configuration mode must be used.

CDP can be disabled globally or on a specific interface​.

Because it runs at the data link layer​, the CDP protocol can only be implemented in switches.


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






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

allows external IP addresses to be concealed from internal users

allows internal IP addresses to be concealed from external users

denies all packets that originate from private IP addresses

denies all internal hosts from communicating outside their own network


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

Internet router


low port density switch



10. 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?

Convert the file system from FAT32 to FAT16.

Edit the configuration file with a text editor.

Change the permission on the file from ro to rw.

Use the dir command from the router to remove the Windows automatic alphabetization of the files on the flash drive.


11. Fill in the blank. Do not use abbreviations.

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


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

copy running-config tftp

copy tftp running-config

copy startup-config tftp

copy tftp startup-config



Baseline documentation for a small company

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?

Connectivity between H1 and H3 is fine.

H3 is not connected properly to the network.

Something is causing interference between H1 and R1.

Performance between the networks is within expected parameters.

Something is causing a time delay between the networks.


14. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.

How long will a user be blocked if the user exceeds the maximum allowed number of unsuccessful login attempts?

1 minute

2 minutes

3 minutes

4 minutes


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

during low utilization times

during peak utilization times

when it is on the main network segment only

when it is from a subset of users


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

reconnaissance attacks

access attacks

denial of service attacks

malicious code attacks


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

use wireless mice and keyboards

create a one-to-many local network using infrared technology

use cell phones to access remote services over very large areas

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


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

tells a wireless device to which WLAN it belongs

consists of a 32-character string and is not case sensitive

responsible for determining the signal strength

all wireless devices on the same WLAN must have the same SSID

used to encrypt data sent across the wireless network



An administrator is trying to troubleshoot connectivity between PC1 and PC2

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?







20. 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?

inoculation, containment, quarantine, and treatment

containment, quarantine, treatment, and inoculation

treatment, quarantine, inoculation, and containment

containment, inoculation, quarantine, and treatment


21. 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 suspects a virus because the ping command did not work.

The network administrator wants to verify Layer 2 connectivity.

The network administrator wants to verify the IP address configured on router R2.

The network administrator wants to determine if connectivity can be established from a non-directly connected network.


22. Fill in the blank. Do not use abbreviations. version..command that is issued on a router is used to verify the value of the software configuration register.​


23. Which protocol supports rapid delivery of streaming media?






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

Wireless networks offer the same security features as wired networks.

Some RF channels provide automatic encryption of wireless data.

With SSID broadcast disabled, an attacker must know the SSID to connect.

Using the default IP address on an access point makes hacking easier.

An attacker needs physical access to at least one network device to launch an attack.

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