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If the application-layer protocol is Telnet, what is the value of the "Protocol" field in the IPv4 header?
The protocol number for TCP in the IPv4 header is 6. Since Telnet uses TCP as its transport layer protocol, the protocol field in the IPv4 header will contain the value 6.
After an Eth-Trunk in LACP mode is created, devices on both ends send LACPDUs to elect the Actor. Which of the following parameters in LACPDUs determine the Actor election?
In LACP (Link Aggregation Control Protocol), the Actor is elected based on device priority, interface priority, and MAC address. These parameters ensure consistency and determine the active links within the aggregated trunk. The interface number alone is not a determining factor. (Reference: HCIA-Datacom Training Material, Link Aggregation Control Protocol (LACP))
Refer to the following configuration of an interface on a switch. For which VLAN does the interface transmit tagged data frames?
interface GigabitEthernet0/0/1
port hybrid tagged vlan 2 to 3 100
port hybrid untagged vlan 4 6
Comprehensive Explanation= The interface configuration shows that VLANs 2, 3, and 100 are tagged, meaning frames belonging to these VLANs are transmitted with VLAN tags. VLANs 4 and 6 are untagged, meaning frames for these VLANs are transmitted without tags. The command port hybrid tagged vlan 2 to 3 100 specifies that data frames for VLANs 2, 3, and 100 are transmitted with tags, while port hybrid untagged vlan 4 6 configures the interface to transmit untagged frames for VLANs 4 and 6.
VLANs can be assigned based on service types during campus network planning.
The Network Management Station uses SNMP to manage devices. Which SNMP message is sent when an SNMP-registered abnormal event occurs?
SNMP Message Types:
get-request: Sent by the NMS to retrieve data from a device.
set-request: Used by the NMS to modify device settings.
get-response: Sent by the device in response to a get-request.
trap: Sent automatically by a device to notify the NMS of an event.
Why 'trap' Is Correct:
If a registered event occurs (e.g., interface down, high CPU usage), the device proactively sends a trap to alert the NMS.
Conclusion:
Since traps notify abnormal events, the correct answer is A (trap).
