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Cisco

Cisco Systems, Inc. is a major IT company, which produces networking equipment and network management solutions for both personal and commercial use. Questions about this company and its products belong here.

1,095 Questions

What is ciscoworks?

CiscoWorks is a network management software suite developed by Cisco Systems that allows network administrators to manage Cisco devices and networks more effectively. It provides a range of tools for monitoring, troubleshooting, and configuring network devices, as well as managing network performance and security. CiscoWorks is designed to streamline operations, enhance visibility across the network, and improve overall efficiency in managing Cisco-based infrastructures.

How Unspecified Bit Rate works?

Unspecified Bit Rate (UBR) is a networking service category primarily used in Asynchronous Transfer Mode (ATM) networks, designed for applications that can tolerate variable data delivery times. UBR does not guarantee a specific bandwidth or quality of service (QoS), allowing for flexible use of network resources. Instead, it provides a best-effort service level, where data packets are sent without pre-defined bandwidth allocation, making it suitable for applications like file transfers or video streaming that can adapt to varying network conditions. However, users may experience packet loss or delays during periods of high network congestion.

What are three characteristics of the Cisco IOS Software Release 12.4T train Choose three?

The Cisco IOS Software Release 12.4T train is characterized by its focus on advanced features for routing and switching, particularly in service provider environments. It includes support for enhanced scalability, which allows for more robust network designs. Additionally, it offers improved security features to protect against emerging threats and vulnerabilities. Lastly, the 12.4T train provides extended support for various protocols and technologies, making it suitable for complex network architectures.

What is memory buffering in a switch?

Memory buffering in a switch refers to the temporary storage of data packets in memory as they are being processed and forwarded. This helps manage differences in speed between incoming and outgoing data streams, preventing packet loss during high traffic. Buffers enable the switch to queue packets when the destination port is busy, ensuring smooth data transmission and improving overall network performance.

What was cisco kid and ponchos horses names?

Cisco Kid's horse was named Diablo, while Pancho's horse was named Loco. These characters were part of a popular radio and television series featuring Cisco Kid and his sidekick Pancho, who roamed the American West fighting injustice. The horses played an essential role in their adventures, reflecting the lively spirit of the duo.

What is a characteristic of an IPv4 loopback interface on a Cisco IOS router?

The IPv4 loopback interface on a Cisco IOS router is a virtual interface that is always up and operational, regardless of the physical state of the router's interfaces. It is typically assigned the IP address 127.0.0.1, but any valid IP address in the loopback range (usually 127.0.0.0/8) can be used. This interface is commonly utilized for testing and management purposes, as it allows for local communication within the router itself without relying on physical interfaces. Additionally, it is useful for routing protocol configurations and as a stable endpoint for various network services.

How do you get the password for cisco E2000?

To retrieve or reset the password for a Cisco E2000 router, you can perform a factory reset by pressing and holding the reset button on the back of the device for about 10 seconds until the lights blink. After the reset, you can access the router's web interface using the default IP address (usually 192.168.1.1) and log in with the default credentials, typically 'admin' for both username and password. If you previously changed the password and cannot remember it, a factory reset is necessary. Always make sure to reconfigure your settings after the reset.

Why plug and surf devices use subnet mask 255.255.255.255?

Plug and surf devices often use the subnet mask 255.255.255.255 to indicate that they are operating in a point-to-point network configuration. This mask allows the device to treat every IP address as a separate entity, meaning it can communicate directly with any other device without needing to route through a subnet. It simplifies the configuration for devices that connect to various networks, as it does not require a predefined network segment. Essentially, it enables a more flexible and dynamic IP assignment process.

Which transport layer protocol provides low overhead and would be used for applications which do not require reliable data de?

The User Datagram Protocol (UDP) is the transport layer protocol that provides low overhead and is used for applications that do not require reliable data delivery. Unlike TCP, UDP does not establish a connection or guarantee the delivery of packets, making it suitable for time-sensitive applications like video streaming, online gaming, and voice over IP (VoIP), where speed is prioritized over reliability.

How do you solve 9.2.1.11 Packet Tracer - Configuring Named Standard ACLspka?

To solve the "9.2.1.11 Packet Tracer - Configuring Named Standard ACLs" task, first, access the router's CLI and create a named standard ACL using the command ip access-list standard [name]. Then, add the desired permit or deny statements to the ACL specifying the source IP addresses. Finally, apply the ACL to the appropriate interface in the inbound or outbound direction using the command ip access-group [name] in|out. Test the configuration by verifying access to the specified resources to ensure the ACL is functioning correctly.

Why should you be concerned about broadcast traffic?

Broadcast traffic can lead to network congestion, as it sends data packets to all devices on a network segment, potentially overwhelming bandwidth and causing slowdowns. This type of traffic can also increase the likelihood of collisions and packet loss, impacting overall network performance and reliability. Additionally, excessive broadcast traffic can create security vulnerabilities, as sensitive information may be exposed to unintended recipients. Managing and limiting broadcast traffic is essential for maintaining an efficient and secure network environment.

What is the use of an electric router?

An electric router is a versatile tool primarily used for shaping, trimming, and hollowing out wood or other materials. It can create decorative edges, grooves, and joints, making it essential for woodworking projects and cabinetry. Additionally, routers are used for engraving designs and can accommodate various bits for different tasks, enhancing their functionality and precision. Their ability to deliver clean, intricate cuts makes them a valuable tool for both amateur and professional woodworkers.

When a Cisco router is being moved from an IPv4 network to a complete IPv6 environment which series of commands would correctly enable IPv6 forwarding and interface addressing?

To enable IPv6 forwarding and configure interface addressing on a Cisco router moving to an IPv6 environment, you would first enter global configuration mode and enable IPv6 routing with the command ipv6 unicast-routing. Next, you would access the specific interface using interface <interface-name> and assign an IPv6 address with the command ipv6 address <ipv6-address>/<prefix-length>. Finally, use the command no shutdown to activate the interface.

Where does cisco manufacture?

Cisco manufactures its products in various locations around the world, including the United States, Mexico, and Asia. The company utilizes a mix of in-house manufacturing and partnerships with third-party manufacturers. Key facilities are located in areas such as San Jose, California, and Tijuana, Mexico. Additionally, Cisco sources components globally to support its manufacturing operations.

How do you empty startup or running configuration command on cisco?

To empty the startup configuration on a Cisco device, you can use the command erase startup-config in privileged EXEC mode. To remove the running configuration, you can use the command write erase followed by reload to restart the device, which will clear the running configuration and load the default settings. Remember to save any necessary configurations before performing these actions, as they will result in data loss.

What is the router interface?

A router interface is a point of connection between the router and a network segment, allowing data to flow in and out of the router. Each interface can be assigned an IP address, enabling routing decisions based on the destination of the data packets. Interfaces can be physical (like Ethernet ports) or virtual (like VLAN interfaces), and they play a crucial role in the router's ability to manage traffic and connect different networks.

What is a nack command in cisco?

In Cisco networking, a NACK (Negative Acknowledgment) command refers to a message sent to indicate that a particular packet or frame has not been received correctly or is missing. This mechanism is often used in protocols that require reliable data transmission, allowing the sender to be notified of errors and resend the lost or corrupted data. In Cisco devices, NACK can be part of protocols such as TCP or other reliable transport mechanisms, ensuring data integrity across the network.

What is cisco sourcefire?

Cisco Sourcefire is a cybersecurity solution that focuses on advanced threat protection and network security. Originally developed by Sourcefire, Inc., which Cisco acquired in 2013, it includes intrusion detection and prevention systems (IDPS), as well as advanced malware protection, and threat intelligence capabilities. The platform helps organizations detect, analyze, and respond to security threats in real-time, leveraging both signature-based and behavioral analysis techniques. It is often integrated into broader Cisco security architectures to enhance overall defense strategies.

Which memory in a Cisco router stores packet buffers and routing tables?

In a Cisco router, the memory that stores packet buffers and routing tables is known as Dynamic Random Access Memory (DRAM). DRAM is used for storing the operational data of the router, including routing information and temporary packet data during processing. In contrast, the router's startup configuration is stored in Non-Volatile Random Access Memory (NVRAM).

What is the web key for cisco?

The web key for Cisco typically refers to the wireless network security key or passphrase used to connect to a Cisco wireless router or access point. This key is essential for encrypting wireless communications and can be found in the router's settings or documentation. Users can usually access it by logging into the router's web interface. It's important to keep this key secure to prevent unauthorized access to the network.

Startup-config is not present Why does this message appear?

The message "Startup-config is not present" typically appears on network devices, such as routers or switches, when the device fails to find its saved configuration file in non-volatile memory (NVRAM) upon boot-up. This can occur if the configuration file has never been saved, was deleted, or if there is a hardware issue with the NVRAM. As a result, the device will load with default settings, requiring reconfiguration to restore desired settings and functionality.

What is Example of a distance vector routing protocol?

An example of a distance vector routing protocol is Routing Information Protocol (RIP). RIP uses hop count as its primary metric for determining the best path to a destination, with a maximum limit of 15 hops. It periodically shares its routing table with neighboring routers, allowing them to update their own tables based on the received information. This protocol is simple to implement but may have slower convergence times compared to more advanced routing protocols.

What number is the last octet value of 252 in a subnet mask?

In a subnet mask, the last octet value of 252 corresponds to the binary representation of 11111100. This means that the first six bits are used for the network part, while the last two bits are for the host part. Therefore, a subnet mask of 255.255.255.252 allows for only two usable IP addresses within that subnet.

How many years does it take to work at cisco?

The length of time one works at Cisco can vary widely depending on individual circumstances, career goals, and opportunities for advancement. Employees may stay for a few years to gain experience or may build long-term careers lasting a decade or more. Cisco also offers various career development programs that can encourage longevity within the company. Ultimately, the duration is influenced by personal and professional factors rather than a fixed timeline.

How do you resolve a Cisco VPN Client 4.8 error 440?

To resolve a Cisco VPN Client 4.8 error 440, first ensure that your VPN client is properly installed and up to date. Check your network connection and firewall settings to ensure they are not blocking the VPN traffic. Additionally, verify that the VPN server settings are correct and that you have the appropriate permissions to connect. If the issue persists, consider reinstalling the VPN client or consulting the system administrator for further assistance.