Computer Networking
A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. If Delta modulation is selected, then how many bits per second are actually sent?

None of these
64 kbps.
8 kbps
128 kbps
32 kbps

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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 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 be added to the existing routing table.
They will all load-balance.
The update will be ignored and no further action will occur.
The updated information will replace the existing routing table entry.

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