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[Cisco Equipment and Related Hardware]
When should a crossover UTP cable be used instead of a straight-through cable when connecting network devices?
A crossover UTP (Unshielded Twisted Pair) cable is used to connect two similar devices directly. This includes:
Switch to switch
Router to router
PC to PC
The crossover cable reverses the transmit and receive pairs, allowing for proper communication between like devices without the need for an intermediary device.
Conversely, a straight-through cable is used to connect dissimilar devices, such as:
PC to switch
Router to switch
PC to router
This cable maintains the same wiring on both ends, suitable for connecting different types of devices.
Therefore, when connecting electrically like devices, a crossover cable is appropriate.
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[Cisco Equipment and Related Hardware]
Refer to the exhibit. What is the redundancy implementation in this Cisco UCS architecture?
In the provided Cisco UCS architecture diagram, the infrastructure consists of:
Two Fabric Interconnects (A and B), each connecting to:
Ethernet (LAN)
Fibre Channel (FC)
FCoE (Fibre Channel over Ethernet)
Both Fabric Interconnects are independently connected to both Cisco UCS Chassis 1 and 2 through I/O Modules (IOMs).
This is the classic active-active UCS design, providing full path redundancy for all traffic types:
LAN uplinks are handled separately by Fabric Interconnect B.
SAN traffic is distributed through FC uplinks and FCoE uplinks via Fabric Interconnects A and B.
Each server in the chassis can fail over its traffic to the alternate fabric if one interconnect fails.
This architecture guarantees no single point of failure, which is essential in mission-critical environments like data centers and enterprise server farms.
[Maintenance and RMA Procedures]
Which step must be performed immediately after powering off the device when replacing a Cisco chassis?
After powering off a Cisco device in preparation for chassis replacement, the immediate next step is to label and remove all I/O cables. This step is crucial to ensure that all connections can be accurately restored after the new chassis is installed.
Proper labeling prevents confusion and potential misconfigurations during reassembly. Only after all cables are safely disconnected should you proceed to remove the chassis ground and then the chassis itself.
[Cisco Licensing and Smart Licensing]
Which two cloud computing services are vendor-managed in an Infrastructure as a Service (IaaS) delivery model? (Choose two.)
In the Infrastructure as a Service (IaaS) model, the cloud provider is responsible for managing and maintaining the underlying infrastructure components, including:
Networking: The cloud provider handles all aspects of network configuration, hardware, and virtual networking.
Storage: The cloud provider supplies and manages the physical and virtual storage infrastructure required to support the consumer's data needs.
The customer is responsible for managing:
Operating Systems
Applications
Data
This model offers flexibility while shifting infrastructure maintenance responsibilities to the service provider.
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[Cisco Equipment and Related Hardware]
A technician must quickly identify multiple Cisco switches in a rack without powering them on. Where should the technician look for serial numbers on the device?
The serial number for Cisco switches is typically found on a label located on the rear panel near the power supplies. This positioning allows technicians to quickly access identification information even when the device is not powered on.
This label is essential for inventory tracking, RMA procedures, and registration for support. Serial numbers are not typically placed on the top or bottom surfaces for devices mounted in a rack, as those areas are less accessible.
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