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Which component of the AAA service security model provides identity verification?
The AAA service security model consists of three components: Authentication, Authorization, and Accounting.
* Authentication: This is the process of verifying the identity of a user or device. It ensures that only legitimate users can access the network or service.
* Authorization: This determines what an authenticated user is allowed to do or access within the network.
* Auditing/Accounting: This component tracks the actions of the user, including what resources they access and what changes they make.
Thus, the correct answer is C. Authentication.
* Cisco AAA Overview
* Understanding AAA (Authentication, Authorization, and Accounting)
In the network shown in the following graphic, Switch1 is a Layer 2 switch.
PC-A sends a frame to PC-C. Switch1 does not have a mapping entry for the MAC address of PC-C. Which action does Switch1 take?
In a network, when a Layer 2 switch (like Switch1) receives a frame destined for a MAC address that is not in its MAC address table, it performs a flooding operation. This means the switch will send the frame out of all ports except the port on which the frame was received. This flooding ensures that if the destination device is connected to one of the other ports, it will receive the frame and respond, allowing the switch to learn its MAC address.
A . Switch1 queries Switch2 for the MAC address of PC-C: This does not happen in Layer 2 switches; they do not query other switches for MAC addresses.
A . Switch1 drops the frame and sends an error message back to PC-A: This is not the default behavior for unknown unicast frames.
D . Switch1 sends an ARP request to obtain the MAC address of PC-C: ARP is used by devices to map IP addresses to MAC addresses, not by switches to find unknown MAC addresses.
Thus, the correct answer is B. Switch1 floods the frame out all active ports except port G0/1.
Cisco Layer 2 Switching Overview
Switching Mechanisms (Cisco)
A Cisco PoE switch is shown in the following image. Which type of port will provide both data connectivity and power to an IP phone?
In the provided image of the Cisco PoE switch, the ports identified with number 6 are the standard RJ-45 Ethernet ports typically found on switches that provide both data connectivity and Power over Ethernet (PoE). PoE ports are designed to supply power to devices such as IP phones, wireless access points, and other PoE-enabled devices directly through the Ethernet cable.
Ports:
* 2: Console port (for management and configuration)
* 3 and 4: Specific function ports (often for management)
* 6: RJ-45 Ethernet ports (capable of providing PoE)
* 7: SFP ports (for fiber connections, typically do not provide PoE)
Thus, the correct answer is C. Ports identified with number 6.
* Cisco Catalyst 2960-L Series Switches Data Sheet
* Cisco PoE Overview
Which protocol allows you to securely upload files to another computer on the internet?
SFTP, or Secure File Transfer Protocol, is a protocol that allows for secure file transfer capabilities between networked hosts. It is a secure extension of the File Transfer Protocol (FTP). SFTP encrypts both commands and data, preventing passwords and sensitive information from being transmitted openly over the network. It is typically used for secure file transfers over the internet and is built on the Secure Shell (SSH) protocol1.
* What Is SFTP? (Secure File Transfer Protocol)
* How to Use SFTP to Safely Transfer Files: A Step-by-Step Guide
* Secure File Transfers: Best Practices, Protocols And Tools
The Secure File Transfer Protocol (SFTP) is a secure version of the File Transfer Protocol (FTP) that uses SSH (Secure Shell) to encrypt all commands and data. This ensures that sensitive information, such as usernames, passwords, and files being transferred, are securely transmitted over the network.
* ICMP (Internet Control Message Protocol) is used for network diagnostics and is not designed for file transfer.
* NTP (Network Time Protocol) is used to synchronize clocks between computer systems and is not related to file transfer.
* HTTP (HyperText Transfer Protocol) is used for transmitting web pages over the internet and does not inherently provide secure file transfer capabilities.
Thus, the correct protocol that allows secure uploading of files to another computer on the internet is SFTP.
* Cisco Learning Network
* SFTP Overview (Cisco)
A Cisco switch is not accessible from the network. You need to view its running configuration.
Which out-of-band method can you use to access it?
Out-of-band (OOB) network interface configuration guidelines
Out of band management configuration
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