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Remove Specific Static RoutesIf your routes are:ip route 192.168.12.0 255.255.255.0 192.168.10.2ip route 192.168.11.0 25...
25/02/2026

Remove Specific Static Routes

If your routes are:

ip route 192.168.12.0 255.255.255.0 192.168.10.2
ip route 192.168.11.0 255.255.255.252 192.168.10.2

Enter global configuration mode and remove them:

Router # conf t
Router(config) # no ip route 192.168.12.0 255.255.255.0 192.168.10.2
Router(config) # no ip route 192.168.11.0 255.255.255.252 192.168.10.2
Router(config) # no ip route 0.0.0.0 0.0.0.0 192.168.10.2
Router(config) # end
Router # write memory















09/02/2026

What is Port Security in Cisco?
Port Security is a Layer 2 security feature on Cisco switches that limits which devices (MAC addresses) can connect to a switch port.

👉 Goal: Prevent unauthorized devices from accessing the
network.

Typical use case:
• User access ports (PCs, printers, IP phones)
• Prevent rogue laptops or switches

________________________________________
Key Rules of Port Security

• Works only on access ports
• Uses MAC addresses to identify devices
• Can restrict, drop, or shut down the port if violated


















syslog severity levels define the importance of system messages, from critical system failures to debugging details, hel...
22/01/2026

syslog severity levels define the importance of system messages, from critical system failures to debugging details, helping administrators prioritize monitoring and troubleshooting.

Which WAN topology has the highest degree of reliability? A. point-to-point B. router-on-a-stick C. full mesh D. hub...
20/01/2026

Which WAN topology has the highest degree of reliability?

A. point-to-point
B. router-on-a-stick
C. full mesh
D. hub-and-spoke

Refer to the exhibit. Configurations for the switch and PCs are complete. Which configuration must be applied so that VL...
18/01/2026

Refer to the exhibit. Configurations for the switch and PCs are complete. Which configuration must be applied so that VLANs 2 and 3 communicate back and forth?

A. interface GigabitEthernet0/0 ip address 10.10.2.10 255.255.252.0
B. interface GigabitEthernet0/.10 encapsulation dot1Q 3 ip address 10.10.2.10 255.255.254.0
C. interface GigabitEthernet0/.3 encapsulation dot1Q 3 native ip address 10.10.2.10 255.255.252.0
D. interface GigabitEthernet0/.3 encapsulation dot1Q 10 ip address 10.10.2.10 255.255.252


Which protocol uses the SSL?• A. SSH• B. HTTPS• C. HTTP• D. Telnet
17/01/2026

Which protocol uses the SSL?

• A. SSH
• B. HTTPS
• C. HTTP
• D. Telnet

Refer to the exhibit. The given Windows PC is requesting the IP address of the host at .www..cisco..com. To which IP add...
16/01/2026

Refer to the exhibit. The given Windows PC is requesting the IP address of the host at .www..cisco..com. To which IP address is the request sent?

A. 192.168.1.253
B. 192.168.1.100
C. 192.168.1.226
D. 192.168.1.254

Refer to the exhibit. Each router must be configured with the last usable IP address in the subnet. Which configuration ...
15/01/2026

Refer to the exhibit. Each router must be configured with the last usable IP address in the subnet. Which configuration fulfills this requirement?

A.
R7 # interface FastEthernet1/0 ip address 10.88.31.127 255.255.255.192
R8 # interface FastEthernet0/0 ip address 10.19.63.95 255.255.255.240
R9 # interface FastEthernet1/1 ip address 10.23.98.159 255.255.255.224
B.
R7 # interface FastEthernet1/0 ip address 10.88.31.126 255.255.255.240
R8 # interface FastEthernet0/0 ip address 10.19.63.94 255.255.255.192
R9 # interface FastEthernet1/1 ip address 10.23.98.158 255.255.255.248
C.
R7 # interface FastEthernet1/0 ip address 10.88.31.127 255.255.255.240
R8 # interface FastEthernet0/0 ip address 10.19.63.95 255.255.255.192
R9 # interface FastEthernet1/1 ip address 10.23.98.159 255.255.255.248
D.
R7 # interface FastEthernet1/0 ip address 10.88.31.126 255.255.255.192
R8 # interface FastEthernet0/0 ip address 10.19.63.94 255.255.255.240
R9 # interface FastEthernet1/1 ip address 10.23.98.158 255.255.255.224

Refer to the exhibit. R1 has just received a packet from host A that is destined to host B. Which route in the routing t...
15/01/2026

Refer to the exhibit. R1 has just received a packet from host A that is destined to host B. Which route in the routing table is used by R1 to reach host B?

A. 10.10.13.0/25 1/0via 10.10.10.2
B. 10.10.13.0/25 108/0via 10.10.10.10
C. 10.10.13.0/25 110/2via 10.10.10.6
D. 10.10.13.0/25 110/2via 10.10.10.2

Refer to the exhibit. When PC-A sends traffic to PC-B, which network component is in charge of receiving the packet from...
14/01/2026

Refer to the exhibit. When PC-A sends traffic to PC-B, which network component is in charge of receiving the packet from PC-A, verifying the IP addresses, and forwarding the packet to PC-B?

A Router
B Layer 2 switch
C Load balancer
D Firewall

Refer to the exhibit. When PC1 sends a packet to PC2, the packet has which source and destination IP address when it arr...
13/01/2026

Refer to the exhibit. When PC1 sends a packet to PC2, the packet has which source and destination IP address when it arrives at interface Gi0/0 on router R2?

Options:
A. Source 192.168.10.10 and destination 10.10.2.2
B. Source 192.168.20.10 and destination 192.168.20.1
C. Source 192.168.10.10 and destination 192.168.20.10
D. Source 10.10.1.1 and destination 10.10.2.2

11/01/2026

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