2019年12月18日 · 17. Which statement describes a characteristic of the frame header fields of the data link layer? They all include the flow control and logical connection fields. Ethernet frame header fields contain Layer 3 source and destination addresses. They vary depending on protocols. They include information on user applications.

2019年6月25日 · In Part 2, you will use Wireshark to capture and analyze Ethernet II frame header fields for local and remote traffic. Required Resources. CyberOps Workstation VM; Internet Access; Part 1: Examine the Header Fields in an Ethernet II Frame. In Part 1, you will examine the header fields and content in an Ethernet II Frame provided to you.

2020年3月4日 · Refer to the exhibit. A network administrator needs to add an ACE to the TRAFFIC-CONTROL ACL that will deny IP traffic from the subnet 172.23.16.0/20.

2024年9月23日 · Part 1: Examine the Header Fields in an Ethernet II Frame. Step 1: Review the Ethernet II header field descriptions and lengths. Step 2: Examine the network configuration of the PC. Step 3: Examine Ethernet frames in a Wireshark capture. Step 4: Examine the Ethernet II header contents of an ARP request.

2021年3月24日 · Source MAC checks the source MAC address in the Ethernet header against the sender MAC address in the ARP body. IP address checks the ARP body for invalid and unexpected IP addresses including addresses 0.0.0.0, …

2022年11月18日 · Explanation: The two Ethernet sublayers are LLC and MAC. LLC manages communications with the upper layers. MAC is the lower sublayer and is responsible for encapsulating the data and getting it onto the network media. In order to get the data onto the media, a specific process must be used. Ethernet uses the CSMA/CD process.

2019年12月20日 · Because PC1 connects to an Ethernet network, an Ethernet header is used. The source MAC address will be the MAC address of PC1 and the destination MAC address will be that of G0/0 on R1. When R1 gets that information, the router removes the Layer 2 header and creates a new one for the type of network the data will be placed onto (the serial link).

2020年11月1日 · In Part 2, you will use Wireshark to capture and analyze Ethernet II frame header fields for local and remote traffic. Required Resources. CyberOps Workstation virtual machine; Instructions Part 1: Examine the Header Fields in an Ethernet II Frame. In Part 1, you will examine the header fields and content in an Ethernet II Frame provided to you.

2019年12月18日 · The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame. The type field 0x806 appears in the header of the Ethernet frame. Entries in an ARP table are time-stamped and are purged after the timeout expires. ARP replies are broadcast on the network when a host receives an ARP request. 67.

2021年5月16日 · It checks the source MAC address in the Ethernet header against the MAC address table. Explanation: DAI can be configured to check for both destination or source MAC and IP addresses: Destination MAC – Checks the destination MAC address in the Ethernet header against the target MAC address in the ARP body.