What does OIR stand for in the context of Cisco ASR component replacement?
Answer : D
Online Insertion and Removal (OIR) is a feature supported by Cisco ASR routers that allows for the insertion and removal of hardware components, such as line cards and modules, while the router is operating. This capability enables maintenance and upgrades without the need to power down the system, thus minimizing network downtime.
Key aspects of OIR include:
Seamless Operation: OIR allows for hardware changes without interrupting the router's operation.
Preservation of Routing Information: The router maintains all routing information and active sessions during the insertion or removal process.
Administrative Shutdown: While not mandatory, it is recommended to administratively shut down the interfaces associated with the component being removed to ensure a graceful transition.
This feature is particularly beneficial in high-availability environments where maintaining continuous network service is critical.
How must the power to a system with dual power supplies on a Cisco Nexus switch be connected?
Answer : C
In a Cisco Nexus switch with dual power supplies, the recommended method is to connect each power supply to a separate power source (Option C). This ensures power redundancy and fault tolerance.
If one power source fails (e.g., due to a power outage or circuit failure), the switch can continue operating uninterrupted using the second power source. Connecting both to a single source (Option D) defeats the purpose of redundancy.
Which Cisco switch series is designed to handle the combined responsibilities of core and distribution layers in a converged architecture?
Answer : D
The Cisco Catalyst 9000 Series is engineered to address the evolving needs of modern enterprise networks by integrating the functionalities of both the core and distribution layers into a unified, converged architecture. This series offers advanced capabilities such as high-speed data forwarding, enhanced security features, and support for automation and programmability, making it suitable for scalable and efficient network designs.
The Catalyst 9000 Series includes models like the Catalyst 9500 and 9600, which are optimized for core and distribution roles, providing high throughput and reliability. These switches support advanced features like Software-Defined Access (SD-Access) and are designed to meet the demands of cloud-scale and security-focused environments.
In contrast, the Meraki MS400 Series (Option A) is tailored for cloud-managed aggregation and lacks the comprehensive feature set required for core functionalities. The Catalyst 6500 E-Series (Option B), while historically significant, is considered a legacy platform and may not support the latest advancements in network convergence. The Catalyst 1300 Series (Option C) is designed for small to medium-sized businesses and is not intended for core or distribution layer deployments.
Which two actions are typically performed in ROMMON mode during the password recovery process? (Choose two.)
Answer : A, E
During the password recovery process on Cisco devices, ROMMON (ROM Monitor) mode is utilized to perform specific actions that facilitate the recovery. Two critical actions typically performed in ROMMON mode are:
Change the Configuration Register: The configuration register is modified to instruct the device to ignore the startup configuration during the next boot. This is commonly achieved by setting the configuration register to 0x2142. This action prevents the device from loading the saved configuration, allowing access without requiring the existing passwords.
Reboot the Device: After changing the configuration register, the device is rebooted to apply the new settings. This reboot enables the device to bypass the startup configuration, facilitating the password recovery process.
These steps are essential in the password recovery procedure, allowing administrators to regain access to the device without erasing the existing configuration.
Which key sequence is used to enter the boot prompt mode when the Cisco NX-OS Software begins the software boot process?
Answer : B
During the boot process of Cisco devices running NX-OS, pressing Ctrl-C at the right time will interrupt the boot sequence and bring the system to the boot loader or ROMmon mode (commonly referred to as the boot prompt).
This allows a technician to perform low-level operations such as recovering passwords, specifying an alternate boot image, or performing diagnostics.
Other options (Ctrl-X, Ctrl-Z, Ctrl-1) are not used for interrupting the boot process in Cisco NX-OS platforms.
What are the steps to mount a Cisco device in a rack?
Answer : B
The correct sequence for mounting a Cisco device in a rack is:
Install mounting brackets: Attach the appropriate rack-mount brackets to the sides of the device using the screws provided. This step prepares the device for secure installation in the rack.
Mount in rack: Carefully place the device into the rack, aligning the brackets with the rack posts, and secure it using the appropriate rack-mount screws.
Ground the device: After the device is securely mounted, connect the grounding wire to the chassis grounding point and then to the facility ground. This step ensures safety and compliance with electrical standards.
This sequence is recommended to ensure both the physical security of the device and the safety of personnel during installation.
Which action must be taken before powering down the endpoint during the replacement process of a Cisco collaboration device?
Answer : B
Before shutting down any Cisco collaboration device (such as an IP phone, video endpoint, or codec) for replacement, it is essential to back up the configuration. This ensures that all custom settings, including user profiles, network configurations, and service settings, are preserved and can be quickly restored on the replacement device.
This backup minimizes downtime and avoids manual reconfiguration errors during the swap process.