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Which device is able to be configured as a TFTP server?
A Cisco router can be configured to act as a TFTP (Trivial File Transfer Protocol) server. TFTP is a simple protocol used to transfer files without the need for authentication. On a Cisco router, the tftp-server command is used to designate the router as a TFTP server, allowing it to manage file transfers to and from connected devices. This is particularly useful for tasks such as updating the router's firmware or backing up configuration files. Neither CSU/DSU, modem, nor Cisco Content Engine are typically used as TFTP servers. Reference := The ability to configure a Cisco router as a TFTP server is documented in Cisco's support forums and knowledge base articles
TFTP is a simple protocol for transferring files, such as a Cisco IOS or configuration file, from one device to another. Which device can be configured as a TFTP server?
Cisco routers can be readily configured to act as TFTP servers, allowing them to provide Cisco IOS images or configuration files to other devices. Here's why this is the correct answer:
Software Support: Cisco IOS includes built-in support for the TFTP protocol, making it easy to set up a TFTP server on a router.
Storage Capacity: Routers typically have flash memory where IOS images and other files can be stored, making them suitable repositories for TFTP transfers.
Network Accessibility: Routers play a central role in networks, making them an accessible location for TFTP file transfers.
Why other options are incorrect:
Cisco Content Engine: Content Engines are specialized network appliances designed for caching and accelerating web content delivery. They typically don't have functionality for acting as generic TFTP servers.
Modem: Modems primarily modulate/demodulate signals to facilitate communication over traditional telephone lines. They lack the software capabilities to run a TFTP server.
CSU/DSU: Channel Service Unit/Data Service Units are devices used to interface with digital leased lines. They don't possess the necessary software to run a TFTP server.
Which two pieces of information are displayed when the show ip interface brief command is used? (Choose two.)
The show ip interface brief command provides a concise summary of the status and IP addressing configuration of interfaces on a Cisco router or switch. Here's what it displays:
Interface: The name of the interface (e.g., FastEthernet0/0, GigabitEthernet1/1).
IP Address: The Layer 3 IP address assigned to the interface (if any).
OK? Indicates the IP layer status of the interface (YES if operational, NO if not).
Method: How the IP address was configured (manual or DHCP).
Status: The Layer 1 status of the interface (up or down).
Protocol: The Layer 2 status of the interface (up or down).
Why other options are incorrect:
Layer 2 address: The show ip interface brief command does not directly display Layer 2 (MAC) addresses. You can use the show interface <interface-name> command for that.
Keepalive: Keepalives are used in some routing protocols but are not generally reflected in the output of the show ip interface brief command.
Encapsulation type: Encapsulation information is also not typically included in the show ip interface brief output.
Cisco IOS show ip interface brief command: [invalid URL removed]
Which address facilitates the routing of packets over an IP network?
The other options listed do not facilitate routing in the same way:
Physical (A) and MAC (D) addresses are used at the data link layer to deliver packets on the same local network.
Transport (B) refers to the transport layer, which is responsible for end-to-end communication and data flow control but does not route packets over an IP network.
Which bits represent the boot field in the configuration register value?
The configuration register on Cisco devices is a 16-bit value, typically represented in hexadecimal notation (e.g., 0x2102). The lowest four bits (bits 0-3) of this value are designated as the boot field.
The Boot Field's Importance:
The boot field determines how the device will load its operating system (Cisco IOS) during the startup process. Here's a basic breakdown of common boot field values:
0x0: Stay at the ROMmon prompt.
0x1: Boot from ROM (often used for troubleshooting or recovery).
0x2 - 0xF: Load the operating system based on settings in the startup configuration (NVRAM) or from a network server if specified.
Example:
A configuration register value of 0x2102 indicates that the boot field is 0x2 (the last digit). This is a common default setting, instructing the device to load the Cisco IOS image from Flash memory.
Cisco Configuration Register Detailed Explanation: [invalid URL removed]
