|A.||3, 2, 1, none||B.||3, 3, 1, 7|
|C.||3, 2, 1, 7||D.||3, 3, 2, none|
Explanation:Routers operate at layer 3. LAN switches operate at layer 2. Ethernet hubs operate at layer 1. Word processing applications communicate to the Application layer interface, but do not operate at layer 7, so the answer would be none.
|A.||Send a different source port number.|
|B.||Decrease the window size.|
|C.||Restart the virtual circuit.|
|D.||Decrease the sequence number.|
Explanation:A receiving host can control the transmitter by using flow control (TCP uses Windowing by default). By decreasing the window size, the receiving host can slow down the transmitting host so the receiving host does not overflow its buffers.
|A.||All of the above|
Explanation:Routers provide packet switching, packet filtering, internetwork communication, and path selection.
|A.||To regulate the size of each segment.|
|B.||To provide a means for the receiver to govern the amount of data sent by the sender.|
|C.||To reassemble segments in the correct order at the destination device.|
|D.||To ensure that data is retransmitted if an acknowledgment is not received.|
Explanation:Flow control allows the receiving device to control the transmitter so the receiving device's buffer does not overflow.
Explanation:You must be able to take a binary number and convert it into both decimal and hexadecimal. To convert to decimal, just add up the 1s using their values. The values that are turned on with the binary number of 10110111 are 128 + 32 + 16 + 4 + 2 + 1 = 183. To get the hexadecimal equivalent, you need to break the eight binary digits into nibbles (4 bits), 1011 and 0111. By add- ing up these values, you get 11 and 7. In hexadecimal, 11 is B, so the answer is 0xB7.