What does Ether() enable when building packets in Scapy?

• A. It creates a UDP layer
• B. It creates a DNS query
• C. It creates a TCP control block
• D. It creates a Layer 2 Ethernet header that can be combined with other layers

Answer: (D)

Ether() is the Layer 2 Ethernet header builder in Scapy. It creates the Ethernet frame’s header where you specify the destination and source MAC addresses and the EtherType field that indicates what protocol comes next (for example IPv4). This header sits at the bottom of the packet, and you typically stack it with higher-layer protocols like IP, TCP, or UDP to form a complete frame. That stacking is what lets you craft realistic packets for on-the-wire testing.

The other options describe higher-layer components that are created by their respective classes—UDP(), DNS(), and TCP()—not by Ether(). Ether() itself doesn’t generate those protocols; it provides the Ethernet frame that can carry them when you combine it with additional layers.