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
the ratio of the number of data units in error to the total number of data units
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

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Computer Networking
Which two of the following are true regarding the distance-vector and link-state routing protocols?1. Link state sends its complete routing table out all active interfaces on periodic time intervals.2. Distance vector sends its complete routing table out all active interfaces on periodic time intervals.3. Link state sends updates containing the state of its own links to all routers in the internetwork.4. Distance vector sends updates containing the state of its own links to all routers in the internetwork.

1 only
2 and 3 only
None of these
3 only

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