READ Free Dumps For Cisco- 200-125
| Question ID 13506 | Which of the following correctly describe steps in the OSI data encapsulation process?
(Choose two.)
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| Option A | The transport layer divides a data stream into segments and may add reliability and flow control information.
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| Option B | The data link layer adds physical source and destination addresses and an FCS to the segment.
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| Option C | Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information.
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| Option D | Packets are created when the network layer adds Layer 3 addresses and control information to a segment.
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| Option E | The presentation layer translates bits into voltages for transmission across the physical link.
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| Correct Answer | A,D |
Explanation Explanation: The transport layer segments data into smaller pieces for transport. Each segment is assigned a sequence number, so that the receiving device can reassemble the data on arrival. The transport layer also use flow control to maximize the transfer rate while minimizing the requirements to retransmit. For example, in TCP, basic flow control is implemented by acknowledgment by the receiver of the receipt of data; the sender waits for this acknowledgment before sending the next part. The Network layer (Layer 3) has two key responsibilities. First, this layer controls the logical addressing of devices. Second, the network layer determines the best path to a particular destination network, and routes the data appropriately.
| Question ID 13507 | Refer to exhibit:
Which two destination addresses will be used by Host A to send data to Host C? (Choose
two.)
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| Option A | the IP address of Switch 1
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| Option B | the MAC address of Switch 1
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| Option C | the IP address of Host C
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| Option D | the MAC address of Host C
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| Option E | the IP address of the router's E0 interface
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| Option F | the MAC address of the router's E0 interface
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| Correct Answer | C,F |
Explanation Explanation: While transferring data through many different networks, the source and destination IP addresses are not changed. Only the source and destination MAC addresses are changed. So in this case Host A will use the IP address of Host C and the MAC address of E0 interface to send data. When the router receives this data, it replaces the source MAC address with its own E1 interfaces MAC address and replaces the destination MAC address with Host Cs MAC address before sending to Host C.