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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

Where do you find cisco brain dumps?

Cisco brain dumps can typically be found on various online forums, study groups, and websites dedicated to IT certification resources. However, it's important to note that using brain dumps is against Cisco's exam policies and can result in disqualification from certification. For effective exam preparation, consider using legitimate study materials, training courses, and practice exams instead. Always prioritize ethical study practices to ensure a genuine understanding of the material.

What is collaboration and training?

Collaboration refers to the process of working together with others to achieve a common goal, leveraging diverse skills and perspectives to enhance creativity and problem-solving. Training, on the other hand, involves the systematic development of skills and knowledge through instruction and practice, enabling individuals or teams to perform tasks more effectively. Together, collaboration and training foster a productive environment where team members can grow and succeed collectively.

What netmask would you use to allow for 310 hosts in a subnet?

To accommodate 310 hosts in a subnet, you would need a netmask that provides at least 512 IP addresses, as the number of usable host addresses is calculated as (2^{(32 - n)} - 2), where (n) is the number of bits used for the network portion. A /23 netmask (255.255.254.0) allows for 512 total IP addresses, resulting in 510 usable addresses after subtracting the network and broadcast addresses. Thus, a /23 netmask is suitable for a subnet requiring 310 hosts.

What are the key success factors of-Cisco?

Cisco's key success factors include its strong focus on innovation, consistently investing in research and development to stay ahead in networking technology. A robust portfolio of products and solutions enables Cisco to cater to diverse customer needs across various sectors. Additionally, strong partnerships, effective channel distribution, and a commitment to customer support have solidified its market leadership and fostered long-term customer relationships. Finally, Cisco's proactive approach to adapting to industry trends, such as cloud computing and cybersecurity, has further enhanced its competitive edge.

Addressing in the transport layer?

In the transport layer, addressing involves identifying communication endpoints, typically using port numbers, which are associated with specific applications or services on a device. This allows multiple applications on a single host to communicate simultaneously without interference. Transport layer protocols, such as TCP and UDP, use these ports alongside IP addresses to ensure data is sent to the correct destination and application. Proper addressing is crucial for reliable data transfer and effective network communication.

How do you decrypt the router encrypted password?

To decrypt a router's encrypted password, you typically need administrative access to the router's configuration interface. Many routers use encryption methods like MD5 or AES, which are designed to be one-way hashes and cannot be directly decrypted. Instead, you can reset the router to its factory settings to regain access if you cannot retrieve the password. Alternatively, some routers allow you to view the password in plain text through the configuration interface if you are already logged in.

How setup accesslist in cisco?

To set up an access list in Cisco, you typically use the Command Line Interface (CLI). First, enter global configuration mode by typing configure terminal. Then, create an access list using the command access-list [number] [permit/deny] [source] [wildcard mask]. Finally, apply the access list to an interface with the command ip access-group [number] in|out, depending on whether you want to filter incoming or outgoing traffic.

Which service provides dynamic global IPv6 addressing to end devices without using a server that keeps a record of available IPv6 addresses?

The service that provides dynamic global IPv6 addressing to end devices without using a centralized server is Stateless Address Autoconfiguration (SLAAC). SLAAC allows devices to automatically generate their own IPv6 addresses by combining a network prefix, typically advertised by a router, with their own interface identifier. This process enables devices to configure themselves with global addresses without the need for a server to maintain a record of available addresses.

What the benefits and disadvantages are to using the cisco SDM?

Cisco SDM (Security Device Manager) offers several benefits, including a user-friendly graphical interface that simplifies the configuration and management of Cisco routers and firewalls, making it accessible for users with varying levels of expertise. It also provides wizards for common tasks, enhancing efficiency and reducing the potential for configuration errors. However, disadvantages include limited functionality compared to command-line interface (CLI) configurations, which may restrict advanced users, and potential performance issues on older hardware due to the resource demands of the graphical interface. Additionally, reliance on SDM can lead to a lack of deeper understanding of the underlying configurations and protocols.

What is FDL on Cisco router?

FDL, or Forwarding Decision Logic, on a Cisco router refers to the process used to determine how packets are forwarded through the device. It involves evaluating routing tables and policies to establish the best path for traffic based on various factors such as destination addresses and network conditions. FDL is a crucial component of Cisco's IOS software that enhances routing efficiency and performance.

How many cisco employees in US?

As of my last update, Cisco had approximately 75,000 employees globally, with a significant portion based in the United States. While specific numbers can fluctuate, it was estimated that around 30,000 to 40,000 of those employees were located in the U.S. For the most current figures, it's best to check Cisco's official reports or press releases.

What is the name for the process of using a router to process and scan packets for acceptable and unacceptable activity at the network level of the OSI?

The process of using a router to inspect and filter packets for acceptable and unacceptable activity at the network level of the OSI model is known as packet filtering. This technique involves analyzing the headers of packets to determine whether they should be allowed through or blocked based on predefined security rules. Packet filtering is commonly implemented in firewalls and helps to enhance network security by controlling traffic flow.

Which three statements are true regarding the encapsulation and de encapsulation of packets when traveling through a router?

When a packet travels through a router, encapsulation occurs as the packet is wrapped in a new header that contains routing information specific to the next hop. During this process, the original packet's header is preserved but may be modified to reflect the new destination. Conversely, during de-encapsulation, the router removes the outer header to process the packet and determines the next hop based on the information in the original header. This process ensures that data is properly routed across different network segments.

How do you get a password on Collins connect?

To obtain a password for Collins Connect, you typically need to register for an account on their website. During the registration process, you'll be asked to provide your email and create a password. If you already have an account but have forgotten your password, you can use the "Forgot Password" link on the login page to receive reset instructions via email. Make sure to check your spam folder if you don't see the email in your inbox.

How can configure VLAN on a switch port?

To configure a VLAN on a switch port, first access the switch's command-line interface (CLI) via console or SSH. Enter configuration mode by typing configure terminal, then select the specific interface using interface [type][number] (e.g., interface FastEthernet0/1). Assign the VLAN to the port with the command switchport access vlan [VLAN_ID], and if needed, set the port to access mode using switchport mode access. Finally, save the configuration with write memory or copy running-config startup-config.

Which server will provide IP addressing information to end devices such as sensors and controllers in an IoE implementation?

In an Internet of Everything (IoE) implementation, the Dynamic Host Configuration Protocol (DHCP) server is responsible for providing IP addressing information to end devices such as sensors and controllers. The DHCP server automatically assigns IP addresses, subnet masks, default gateways, and DNS server information, enabling seamless network communication. This dynamic allocation helps manage the increasing number of devices efficiently.

What is a result of using the service password-encryption command on a cisco net device?

The service password-encryption command on a Cisco network device encrypts plaintext passwords in the device's configuration file, converting them into a more secure format. This helps protect sensitive information from being easily readable by unauthorized users who might access the configuration. However, it's important to note that this encryption is relatively weak and should not be considered a robust security measure on its own. It primarily serves to obfuscate passwords rather than provide strong encryption.

What are two options for expanding storage space on a Cisco router?

Two options for expanding storage space on a Cisco router include upgrading the existing flash memory or adding an external storage device. Upgrading the flash memory involves replacing the current memory module with one that has a larger capacity, while external storage can be achieved by using USB ports or SD card slots available on some Cisco routers to connect additional storage devices. Both methods enhance the router's ability to store configurations, logs, and other data.

Which cable should use DTE to DCE?

To connect Data Terminal Equipment (DTE) to Data Communications Equipment (DCE), a straight-through cable is typically used. This type of cable allows for direct communication between the two devices, with the pinouts configured to match each other correctly. For example, in a common scenario using RS-232 serial connections, a DB-9 or DB-25 cable would be configured with the appropriate wiring to ensure proper signal transmission.

How do you prevent unauthorized personnel from accessing your CISCO device through the console ports?

To prevent unauthorized personnel from accessing a Cisco device through the console ports, you should implement strong password protection by setting a console password and enabling login on the console line. Additionally, configure user privilege levels and utilize local authentication to restrict access. It’s also advisable to physically secure the device in a locked location and consider using terminal server devices for centralized access control. Regularly update and audit access credentials to maintain security.

What statement best describes HDLC encapsulation?

HDLC (High-Level Data Link Control) encapsulation is a bit-oriented protocol used for transmitting data over point-to-point and multipoint links. It encapsulates data frames with a specific structure, including a flag byte to denote the start and end of a frame, as well as control and address fields for managing communication. HDLC provides error detection and correction features, making it reliable for data transmission. Its versatility allows it to support various network topologies and communication types.

Which distinct type of VLAN is used by an administrator to access and configure a switch?

The distinct type of VLAN used by an administrator to access and configure a switch is called the "Management VLAN." This VLAN is specifically designated for management traffic, allowing administrators to connect to the switch for configuration purposes. Typically, it is assigned a specific VLAN ID and is separate from user data traffic to enhance security and manageability.

What is the default value of bridge priority on cisco switches?

The default bridge priority on Cisco switches is 32768. This value is used in the Spanning Tree Protocol (STP) to determine the root bridge in a network. Lower bridge priority values are preferred, so if multiple switches have the same priority, the switch with the lowest MAC address becomes the root bridge.

What is LLC in networking?

In networking, LLC stands for Logical Link Control, which is a sublayer of the Data Link Layer in the OSI model. It is responsible for identifying the network layer protocols and managing communication between devices over the same physical medium. LLC provides services such as error checking and frame synchronization, enabling multiple network protocols to operate simultaneously over a single link. It essentially helps facilitate reliable data transfer and flow control in network communications.

Which two characters are allowed as part of the hostname of a Cisco device?

In a Cisco device hostname, the allowed characters include letters (A-Z, a-z), numbers (0-9), and hyphens (-). The hostname must start with a letter and can have a maximum length of 63 characters. Additionally, it cannot contain spaces or special characters other than the hyphen.