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Questions and Answers
What is the primary security feature of port-security on Cisco switches?
What is the primary security feature of port-security on Cisco switches?
When a Cisco router's interface is configured with NAT, what is the purpose of the overload keyword?
When a Cisco router's interface is configured with NAT, what is the purpose of the overload keyword?
What does the service password-encryption command on a Cisco device do?
What does the service password-encryption command on a Cisco device do?
Why might you use a named ACL instead of a numbered ACL on a Cisco router?
Why might you use a named ACL instead of a numbered ACL on a Cisco router?
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What is the purpose of using login local under the VTY lines configuration on a Cisco device?
What is the purpose of using login local under the VTY lines configuration on a Cisco device?
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In the context of Cisco IOS services, why would you disable HTTP and HTTPS services?
In the context of Cisco IOS services, why would you disable HTTP and HTTPS services?
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What is the primary purpose of network security?
What is the primary purpose of network security?
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Why is SSH preferred over Telnet for remote management?
Why is SSH preferred over Telnet for remote management?
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What is the purpose of RBAC (Role-Based Access Control) in network devices?
What is the purpose of RBAC (Role-Based Access Control) in network devices?
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What should a secure password policy enforce?
What should a secure password policy enforce?
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What is the main risk of using Telnet over SSH for remote access?
What is the main risk of using Telnet over SSH for remote access?
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What does port security on a switch do?
What does port security on a switch do?
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Why is it important to have a firewall in a network?
Why is it important to have a firewall in a network?
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What is the purpose of intrusion detection systems (IDS) in network security?
What is the purpose of intrusion detection systems (IDS) in network security?
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What is the primary purpose of NAT in IPv4?
What is the primary purpose of NAT in IPv4?
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What does a Syslog message with severity level 0 indicate?
What does a Syslog message with severity level 0 indicate?
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What is the purpose of a console password on a Cisco device?
What is the purpose of a console password on a Cisco device?
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When should the service password-encryption command be used when configuring a Cisco device?
When should the service password-encryption command be used when configuring a Cisco device?
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What does the AutoSecure feature in Cisco devices do?
What does the AutoSecure feature in Cisco devices do?
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What does port security sticky learning on a switch do?
What does port security sticky learning on a switch do?
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Where does an access-list applied with 'in' (inbound) on a Cisco router interface filter traffic?
Where does an access-list applied with 'in' (inbound) on a Cisco router interface filter traffic?
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What does the switchport mode trunk command use by default to encapsulate VLAN tags?
What does the switchport mode trunk command use by default to encapsulate VLAN tags?
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What does the command switchport port-security mac-address sticky enable on a switch port?
What does the command switchport port-security mac-address sticky enable on a switch port?
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How can Telnet be disabled on a Cisco device?
How can Telnet be disabled on a Cisco device?
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What can an extended ACL filter by?
What can an extended ACL filter by?
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When managing Cisco device passwords, what is a best practice for enhancing security?
When managing Cisco device passwords, what is a best practice for enhancing security?
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What is the purpose of port-security mac-address sticky in Cisco switches?
What is the purpose of port-security mac-address sticky in Cisco switches?
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Which statement about ACLs is true?
Which statement about ACLs is true?
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What is the purpose of disabling small services like echo and chargen in Cisco devices?
What is the purpose of disabling small services like echo and chargen in Cisco devices?
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What is the preferred order for securely configuring an ACL?
What is the preferred order for securely configuring an ACL?
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What is the purpose of NAT in networking?
What is the purpose of NAT in networking?
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Why are named ACLs preferred over numbered ACLs in Cisco IOS?
Why are named ACLs preferred over numbered ACLs in Cisco IOS?
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What is the primary function of syslog in network devices?
What is the primary function of syslog in network devices?
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What is the purpose of TFTP in network devices?
What is the purpose of TFTP in network devices?
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What is the purpose of SSH configuration on a Cisco device?
What is the purpose of SSH configuration on a Cisco device?
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What is the purpose of disabling unused services like HTTP or Telnet on a Cisco router?
What is the purpose of disabling unused services like HTTP or Telnet on a Cisco router?
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What is the primary function of RBAC in network security?
What is the primary function of RBAC in network security?
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What is the purpose of encrypting passwords in the configuration file of a Cisco device?
What is the purpose of encrypting passwords in the configuration file of a Cisco device?
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What is the primary function of RBAC (Role-Based Access Control) in Cisco network devices?
What is the primary function of RBAC (Role-Based Access Control) in Cisco network devices?
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What does the transport input none command on a Cisco switch VTY line do?
What does the transport input none command on a Cisco switch VTY line do?
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What is the primary purpose of using TFTP in managing Cisco devices?
What is the primary purpose of using TFTP in managing Cisco devices?
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What does the log keyword at the end of an ACE in a Cisco ACL do?
What does the log keyword at the end of an ACE in a Cisco ACL do?
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What is the default behavior regarding traffic not explicitly permitted by an ACL?
What is the default behavior regarding traffic not explicitly permitted by an ACL?
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Why is setting a domain name necessary when configuring SSH on a Cisco device?
Why is setting a domain name necessary when configuring SSH on a Cisco device?
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How can an ACL be used in conjunction with NAT on a Cisco router?
How can an ACL be used in conjunction with NAT on a Cisco router?
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What does configuring switchport port-security maximum 1 on a Cisco switch port allow?
What does configuring switchport port-security maximum 1 on a Cisco switch port allow?
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What is the purpose of disabling CDP on a Cisco device?
What is the purpose of disabling CDP on a Cisco device?
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What does the ip ssh version 2 command do when configuring SSH on a Cisco device?
What does the ip ssh version 2 command do when configuring SSH on a Cisco device?
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What does the switchport port-security mac-address sticky command do on a switch port?
What does the switchport port-security mac-address sticky command do on a switch port?
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Study Notes
Cisco Network Device Configuration and Security
- ACLs can restrict input to an interface by limiting MAC addresses
- Syslog is used in network devices to monitor and log system events
- TFTP is used on network devices for transferring configuration files and IOS images
- Disabling small services like echo and chargen in Cisco devices helps reduce the risk of denial-of-service attacks
- Standard ACLs only filter by source IP address
- Best practice for securely configuring an ACL is to order the entries to match the network security policy
- NAT is used to convert private IP addresses to public IP addresses
- Named ACLs in Cisco IOS are preferred over numbered ACLs because they are easier to identify and manage
- Port-security mac-address sticky in Cisco switches is used to dynamically learn and add MAC addresses to the running configuration
- SSH configuration on a Cisco device typically involves generating RSA keys, setting a domain-name, and configuring VTY lines for SSH
- Disabling unused services on a Cisco router, like HTTP or Telnet, enhances security by decreasing the router's attack surface
- RBAC provides a way to align access rights with job functions
Cisco Network Device Management Key Points
- Purpose of encrypting passwords in the configuration file is to secure sensitive data
- RBAC (Role-Based Access Control) primarily used for managing user roles and access levels in network devices
- The transport input none command on a Cisco switch VTY line disables all inbound connections on the line
- TFTP in managing Cisco devices is used to transfer configuration files and IOS images
- The log keyword at the end of an ACE in a Cisco ACL logs the traffic that matches the ACE
- To automatically deny any traffic not explicitly permitted by an ACL, no additional step is necessary; this is the default behavior
- When configuring SSH on a Cisco device, setting a domain name is necessary to generate RSA keys for encryption
- An ACL can be used in conjunction with NAT on a Cisco router to define which addresses are to be translated
- Configuring switchport port-security maximum 1 on a Cisco switch port allows only one MAC address to communicate through the port
- Disabling CDP on a Cisco device is done to prevent the advertisement of the device's presence to others
- The ip ssh version 2 command sets the SSH version to the more secure version 2
- The switchport port-security mac-address sticky command configures a switch port to automatically learn the MAC address of the device connected to it and save it as a secure address
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Description
Test your knowledge of Cisco network device configuration and security with this quiz. Covering topics such as ACLs, TFTP, SSH configuration, port security, and best practices for securing and managing network devices, this quiz will help you assess your understanding of key concepts in Cisco network management.