Please answer in complete sentences and paragraphs  The configuration shows the commands entered by a network administrator. However, host PCA cannot communicate with PCB. Analyze the configuration and find what could cause this problem. How it can be fixed?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Please answer in complete sentences and paragraphs 

The configuration shows the commands entered by a network administrator. However, host PCA cannot communicate with PCB. Analyze the configuration and find what could cause this problem. How it can be fixed?

Fa0/1
Fa0/1
Fa0/22
R_1
S1
PCA
Fa0/24
PCB
R_1 (config)# interface fa0/1
R_1 (config-if)# no shutdown
R_1 (config-if)# interface fa0/1.1
R_1 (config-subif)# encapsulation dot1q 11
R_1 (config-subif)# ip address 192.168.11.1 255.255.255.0
R_1 (config-if)# interface fa0/1.2
R_1 (config-subif)# encapsulation dot1g 99
R_1 (config-subif)# ip address 192.168.99.1 255.255.255.0
S1 (config)# interface fa0/1
S1 (config-if)# switchport mode trunk
S1 (config)# interface fa0/22
VLAN 11 VLAN 99 S1 (config-if)# switchport mode access
S1 (config)# interface fa0/24
S1 (config-if)# switchport mode access
Transcribed Image Text:Fa0/1 Fa0/1 Fa0/22 R_1 S1 PCA Fa0/24 PCB R_1 (config)# interface fa0/1 R_1 (config-if)# no shutdown R_1 (config-if)# interface fa0/1.1 R_1 (config-subif)# encapsulation dot1q 11 R_1 (config-subif)# ip address 192.168.11.1 255.255.255.0 R_1 (config-if)# interface fa0/1.2 R_1 (config-subif)# encapsulation dot1g 99 R_1 (config-subif)# ip address 192.168.99.1 255.255.255.0 S1 (config)# interface fa0/1 S1 (config-if)# switchport mode trunk S1 (config)# interface fa0/22 VLAN 11 VLAN 99 S1 (config-if)# switchport mode access S1 (config)# interface fa0/24 S1 (config-if)# switchport mode access
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