An ISP technician frequently needs to administer a router remotely in the event of a configuration error or WAN outage. Which of the following technologies would facilitate the required connectivity?
Out-of-band (OOB) management is a method of remotely controlling and managing critical IT assets and network equipment using a secure connection through a secondary interface that is physically separate from the primary network connection. This enables administrators to gain control even during infrastructure faults.
When a dedicated channel is established for managing network devices, it is
known as out-of-band management. A connection can be established via a
console router, or modem, and this can be used to ensure management
connectivity independent of the status of in-band network connectivity (which
would include serial port connections, VNC, and SSH). Out-of-band
management lets the administrator monitor, access, and manage network
infrastructure devices remotely and securely, even when everything else is down
The answer IS SSH because the ISP technician is remotely configuring the device and needs secure connection to the device, the connection would already be an OOB connection, but SSH specifies that connection will be a secure one.
OOB can be remote.
https://www.digi.com/solutions/by-technology/out-of-band-management
And the question doesn't specify a secure connection, just something that will facilitate a connection.
I believe the answer should be C Out of Band,
however, since it is a remote connection, CompTIA wants secure remote connection therefore SSH into the router to manage it
I also think that correct answer is C.
More info:
https://www.techopedia.com/definition/21211/out-of-band-management
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