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لو سمحتم ده سؤال من اسئلة السيميولاتور اللي بتيجي في امتحان ccna
انا مش فاهم حل السؤال ده
Out of which port on switch Sw-Ac3 would a frame containing an IP packet with destination address that is not on a local LAN be forwarded?
Answer:
To forward any packet with destination address other then the subnet network of the switch, the switch usually forwards this IP packets to the layer 3 device example router connected to it.
Step1: Find the default-gateway(Router or layer 3 device) configured on the switch.
use the Show run command to view the IP address used to configure default-gateway on the switch.
Step2: Look for the router VLAN-R1 after using the show cdp neighbor detail command
Sample output of show cdp neighbor detail command for better understanding the output details
Device ID: C2950-1
Entry address(es):
Platform: Cisco WS-C2950T-24, Capabilities: Switch IGMP
Interface: FastEthernet0/0, Port ID (outgoing port): FastEthernet0/15
Holdtime : 139 sec
Two things to notice from above output
Interface: FastEthernet0/0 this statement provides that the neighbor(c2950-1) is connected to fa 0/0 on the c3660-2 local switch.
Port ID (outgoing port): FastEthernet0/15 this explains that neighbor (c2950-1) uses fa 0/15 port to reach c3660-2 switch.
FOR OUR QUESTION WE SHOULD LOOK FOR THE ROUTER VLAN-R1 corresponding details and to which port it is connected on local switch Sw-Ac3.
Step3: The port number to which the routerVLAN-R1 is connected on switch Sw-Ac3 is used to forward the packets with destination address that is not on a local LAN
ده سؤال تاني انا مش فاهم فيه step 2
Question 7:
Out of which ports will frame with source mac-address 0015.5A0Cc.A086 and destination mac-address 000A.8A47.0612 be forwarded ?
Answer:
Step1: Use Show mac-address-table command on the switch.
The output of a show mac-address-table provides the mapping of mac address with port numbers. Search the output for the two mac-addresses provided in the question and select the destination mac address corresponding port number for correct answers.
Step2: If you do not find the above destination mac-address in SHOW MAC-ADDRESS-TABLE output , then the frame will be broadcast or flooded to all ports ( all ports may be ports of particular vlan on switch ,Selection of VLAN will be depending on the source mac-address port vlan membership) except the port it recieved from.
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