Cisco 300-115 Implementing Cisco IP Switched Networks Online Training
Cisco 300-115 Online Training
The questions for 300-115 were last updated at Sep 30,2025.
- Exam Code: 300-115
- Exam Name: Implementing Cisco IP Switched Networks
- Certification Provider: Cisco
- Latest update: Sep 30,2025
Refer to the exhibit.
Which two commands ensure the DSW1 becomes root bridge for VLAN 10 and 20? (Choose two
- A . spanning-tree MST 1 priority 1
- B . spanning-tree MST vlan 10, 20 priority root
- C . spanning-tree MST 1 root primary
- D . spanning-tree MST 1 priority 4096
- E . spanning-tree mstp vlan 10,20 root primary
You move a switch from a network where it performed Layer 2 switching only a network where it performs Layer 2 switching and Layer 3 routing. You notice that the switch is showing high CPU usage and significantly degraded routing performance.
Which command sequence do you use to troubleshooting and fix the problem?
- A . #show running-config
(config)#ip routing - B . # show running-contig
(config)#sdm prefer VLAN - C . #show running-config
(config)#sdm prefer routing - D . #show running-config
(config)#sdm prefer default
Which three values can a Cisco IOS device use as the basis for EtherChannel load-balancing? (Choose three)
- A . IP precedence
- B . MAC address
- C . DSCP
- D . port number
- E . IP address
- F . VLAN
Which two statements about GLBP are true? (Choose two)
- A . The AVG responds to ARP requests for the virtual IP address
- B . The AVF responds to ARP requests for the virtual IP address
- C . The AVF assigns virtual MAC addresses to GLBP group members
- D . LAN client traffic is handled by the active AVF only
- E . The AVG assigns virtual MAC addresses to GLBP group members
Which two statements about native VLANs are true? (Choose two
- A . Cisco Discovery Protocol versions 1 and 2 can carry native VLAN information
- B . The native VLAN can be changed on a per-port basis
- C . VLAN 1 and VLAN 1001 are native VLANs by default
- D . Only one VLAN can be the native VLAN on a device
- E . The native VLAN is untagged over trunks
Which feature can you enable on your network to most effectively limit unknown traffic?
- A . ARP packet rate limiting
- B . unicast storm control
- C . broadcast storm control
- D . multicast storm control
- E . DHCP packet rate limiting
A. network engineer configured an Ethernet switch using the following command.
Which statement about the spanning-tree portfast feature on the switch is true?
Switchone (config)#spanning-tree portfast bpdufilter default
- A . If an interface is enabled for portfast receives BPDU, the port is shut down immediately
- B . If an interface is enabled for portfast receive BPDU, the port goes into the spanning-tree inconsistent state
- C . If an interface is enabled for portfast receives BPDU, the port does not go through the spanning-tree listening, learning, and forwarding states
- D . It an interface is enabled for portfast receives BPDU, the port goes through the spanning-tree listening, learning, and forwarding states
To provide security, a service provider various private VLANs in its backbone network infrastructure to prevent certain VLANs communicating to each other.
Which version of VTP supports the use of private VLANs?
- A . version2
- B . version 1
- C . version 3
- D . VTP does not support private VLANs
Refer to the exhibit.
You have configured routers R1 and R2 with VRRP for load sharing as shown.
Which two effects of this configuration are true? (Choose two)
- A . PC1 and PC3 use router R1 as the primary gateway
- B . Router R2 is the primary gateway for 10.1.0.1 and router R1 is the primary gateway for 10.1.0.10
- C . The four PCs send all requests to router R1. Which forward traffic to router R2 as necessary
- D . The four PCs send packets round-robin between routers R1 and R2
- E . PC2 and PC4 use router R1 as the primary gateway
- F . Router R1 is the primary gateway for 10.1.0.1 and router R2 is the primary gateway for 10.1.0.10
Which statement about HSRP, GLBP, and VRRP is true?
- A . MAC address 0000.A767.9430 indicates that that default gateway redundancy is provided through HSRP
- B . MAC address 0000.0c07.ac0c indicates that default gateway redundancy is provided through GLBP
- C . GLBP users UDP port 3222 (source and destination) for hello message
- D . VRRP group members communicate using multicast address 224.0.0.102
- E . HSRP group members communicate using multicast address 224.0.0.18
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