[Practice Question] Which 3 functions are performed by intermediary network devices..

Hello, I want to ask about this question I got in my Networking Academy course

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Red color = correct answers

A host is accessing a Web server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three.)

regenerating data signals
acting as a client or a server
providing a channel over which messages travel
applying security settings to control the flow of data
notifying other devices when errors occur
serving as the source or destination of the messages

Why isn't the 3rd choice "providing a channel over which messages travel" the correct answer ?
And in the 4th choice, which security settings that control the flow of data ?

Thanks

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Comments

aftereffector

Security settings could be access control lists (ACLs), among other things. Regarding the 3rd option, a channel over which messages travel seems to me to point towards the actual transport layer - copper and fiber cables - as opposed to a "network device".

dave0212

aftereffector wrote: »

Security settings could be access control lists (ACLs), among other things. Regarding the 3rd option, a channel over which messages travel seems to me to point towards the actual transport layer - copper and fiber cables - as opposed to a "network device".

+1

Agree "providing a channel over which messages travel" would be more related to the connectivity rather than the device/hop

FreddyIW

aftereffector wrote: »

Security settings could be access control lists (ACLs), among other things. Regarding the 3rd option, a channel over which messages travel seems to me to point towards the actual transport layer - copper and fiber cables - as opposed to a "network device".

dave0212 wrote: »

+1

Agree "providing a channel over which messages travel" would be more related to the connectivity rather than the device/hop

Oh yeah that makes sense

. And you mean physical layer right.
Thanks

aftereffector

D'oh! Physical layer.

bharvey92

Aftereffector is correct, the channel would be a phyiscal layer technology eg: Copper, Fibre, Wireless.

The security settings could be an ACL or Zone Based Firewall.

I remember a question like this when first starting my CCNA studies and it can throw you at 1st.