Which unit of measurement is recommended for expressing radio frequency power due to its logarithmic nature?
Answer(s): D
Decibel (dB)Decibel is a logarithmic unit of measure used to express the ratio of two values of the same measure. This unit is not included to the System International of units (SI), but it is widely used in communication systems and many other technical fields, as it allows to compare two values of any nature, provided that these values are expressed in the same unit.Decibel is a decile of the main, larger unit — Bel. Bel is a common logarithm of the ratio of two energies. But in practice Bel was a far too big value, therefore its tenth part is used – decibel.The logarithmic method of presentation of numbers often can be very useful, as it allows to replace multiplication with addition, division with subtraction, raising to power with multiplication, and extracting a root with the division.What is measured in dB in the MRFC:-Gain constant -Sound level -Signal/noise ratio -Signal attenuation
https://en.cyclopedia.ifcg.ru/wiki/Radiofrequency_characteristics
What are characteristics of Aruba Central? (Select two.)
Answer(s): D,E
Aruba Central is a cloud-based network management system that allows network administrators to manage Aruba networking equipment from a web-based dashboard. It can also manage third-party networking equipment. Therefore, the correct options are D and E. Option A is incorrect because Aruba Central is not an on-premises server, but rather a cloud-based service. Option B is incorrect because Aruba Central uses APIs rather than SNMP to manage Aruba networking equipment. Option C is incorrect because Aruba Central uses APIs and HTTPs to manage Aruba networking equipment.
What are the key differences between L2 switches and routers? (Select two.)
Answer(s): B,E
Switches are primarily layer 2 devices that are used for forwarding Ethernet frames based on MAC addresses. They use a MAC address table to keep track of where devices are connected to the network. Routers are primarily layer 3 devices that are used for forwarding IP packets based on their destination IP address. They use a routing table to determine the best path to forward packets. While switches can have a high port density, routers generally offer a higher port density and are used to connect different networks together.
Which command should you enter to access the second interface of a one-rack-unit standalone ArubaOS-CX switch?
Answer(s): B
In ArubaOS-CX switches, the format of the interface command is as follows:interface <slot>/<module>/<port>For a one-rack-unit standalone switch, the slot and module values will both be 1. Therefore, to access the second interface, the correct command would be:interface 1/0/2The "1" represents the slot number, the "0" represents the module number, and the "2" represents the port number.
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