Computer Networking
RS-449/442-A/423-A is

a check bit appended to an array of binary digits to make the sum of the all the binary digits
a set of physical layer standards developed by EIA and intended to replace RS-232-
a code in which each expression conforms to specific rules of construction, so that if certain errors occur in an expression the resulting expression will not conform to the rules of construction and
None of these
the ratio of the number of data units in error to the total number of data units

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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?

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

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