Correct Answer:

Correct Answer: A

10GBase-SR and 10GBase-LR are two types of 10 Gbps Ethernet standards for optical fiber communication.

10GBase-SR (Short Reach) is a 10 Gbps Ethernet standard for short-distance optical fiber communication, typically used for data center and campus network applications. It supports distances up to 300 meters over multi-mode fiber (MMF) cable.

10GBase-LR (Long Reach) is a 10 Gbps Ethernet standard for long-distance optical fiber communication, typically used for WAN (Wide Area Network) applications. It supports distances up to 10 kilometers over single-mode fiber (SMF) cable, making it well suited for high-speed inter-building or inter-data center connections.

Correct Answer: C

The component of an Ethernet frame that is used to notify a host that traffic is coming is the preamble. The preamble is a sequence of bits that is transmitted at the beginning of an Ethernet frame and is used to alert the receiving host that a frame is about to be transmitted.

The preamble consists of a series of alternating 1s and 0s, followed by a start-of-frame delimiter (SFD). The SFD is a unique pattern of bits that indicates the start of the frame and allows the receiving host to synchronize its clock with the sender's clock. The preamble and SFD together make up the preamble field of the Ethernet frame.

After the preamble, the Ethernet frame consists of several other fields, including the destination and source MAC addresses, the type field, and the data field. The data field contains the payload of the frame, which can be a variety of different types of data, such as IP packets or application data.

The preamble is important because it allows the receiving host to prepare for the arrival of the frame and ensures that the frame is properly received and processed. Without the preamble, the receiving host may not be aware that a frame is being transmitted, which could result in lost or corrupted data.

Correct Answer: A

In computer networking, Gigabit Ethernet (GbE or 1 GigE) is the term applied to transmitting Ethernet frames at a rate of a gigabit per second.” Both standards use Ethernet framing (same headers and trailers)

Correct Answer: B

From the neighbor status, we notice the “Flags” are SP. “P” here means the neighbor is in Passive mode. In order to create an Etherchannel interface, the (local) SW1 ports should be in Active mode. Moreover, the “Port State” in the exhibit is “0x3c” (which equals to “00111100″ in binary format). Bit 3 is “1” which means the ports are synchronizing -> the ports are working so the local ports should be in Active mode.