Computer Networking
HDLC (High-level Data Link Control) is

network access standard for connecting stations to a circuit-switched network
a method access control technique for multiple-access transmission media
a method of determining which device has access to the transmission medium at any time
a very common bit-oriented data link protocol issued by ISO.
None of these

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Computer Networking
Two connected routers are configured with RIP routing. What will be the result when a router receives a routing update that contains a higher-cost path to a network already in its routing table?

They will all load-balance.
The existing routing table entry will be deleted from the routing table and all routers will exchange routing updates to reach convergence.
The updated information will replace the existing routing table entry.
The updated information will be added to the existing routing table.
The update will be ignored and no further action will occur.

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