Cisco 300-115 Online Practice Questions and Exam Preparation

Cisco 300-115 Online Questions & Answers

• Question 41:

  Which two commands add VLAN 20 to the VLAN configuration file? (Choose two.)

  A. switch(config)# vlan configuration 20
  B. switch(config)# interface vlan 20
  C. switch(config)# vlan 20
  D. switch(config)# switchport access vlan 20
  E. switch(config)# switchport trunk allowed vlan 20
  C. switch(config)# vlan 20
  D. switch(config)# switchport access vlan 20

• Question 42:

  Which statement describes one major issue that VTP can cause in an enterprise network when a new switch is introduced in the network in VTP mode server?

  A. It can cause network access ports to go into err-disabled state.
  B. It can cause a network-wide VLAN configuration change if the revision number on the new switch is higher.
  C. It can cause a network-wide VLAN configuration change if the revision number on the new switch is lower.
  D. It can cause routing loops.
  B. It can cause a network-wide VLAN configuration change if the revision number on the new switch is higher.

• Question 43:

  A question regarding to LLDP. What sets the timing of the advertisements?

  A. LLDP Timer
  A. LLDP Timer

• Question 44:

  Refer to the exhibit.

  

  Users of PC-1 experience slow connection when a webpage is requested from the server. To increase bandwidth, the network engineer configured an EtherChannel on interfaces Fa1/0 and Fa0/1 of the server farm switch, as shown here:

  Server_Switch#sh etherchannel load-balance

  EtherChannel Load-Balancing Operational State (src-mac):

  Non-IP: Source MAC address

  IPv4: Source MAC address

  IPv6: Source IP address

  Server_Switch#

  However, traffic is still slow. Which action can the engineer take to resolve this issue?

  A. Disable EtherChannel load balancing.
  B. Upgrade the switch IOS to IP services image.
  C. Change the load-balance method to dst-mac.
  D. Contact Cisco TAC to report a bug on the switch.
  C. Change the load-balance method to dst-mac.

  ---

  Since this traffic is coming from PC-1, the source MAC address will always be that of PC-1, and since the load balancing method is source MAC, traffic will only be using one of the port channel links. The load balancing method should be changed to destination MAC, since the web server has two NICs traffic will be load balanced across both MAC addresses. https://www.CertBus.com/300-115.html

• Question 45:

  VLAN maps have been configured on switch R1. Which of the following actions are taken in a VLAN map that does not contain a match clause?

  A. Implicit deny feature at end of list.
  B. Implicit deny feature at start of list.
  C. Implicit forward feature at end of list
  D. Implicit forward feature at start of list.
  A. Implicit deny feature at end of list.

• Question 46:

  Which feature must be enabled to eliminate the broadcasting of all unknown traffic to switches that are not participating in the specific VLAN?

  A. VTP pruning
  B. port-security
  C. storm control
  D. bpdguard
  A. VTP pruning

  ---

  Explanation: VTP ensures that all switches in the VTP domain are aware of all VLANs. However, there are occasions when VTP can create unnecessary traffic. All unknown unicasts and broadcasts in a VLAN are flooded over the entire VLAN. All switches in the network receive all broadcasts, even in situations in which few users are connected in that VLAN. VTP pruning is a feature that you use in order to eliminate or prune this unnecessary traffic. Reference: http:// www.cisco.com/c/ en/us/ support/docs/lan-switching/vtp/10558- 21.html#vtp_pruning

• Question 47:

  What is the command for configuring root guard?

  A. (config) spanning-tree guard root
  B. (config-if) spanning-tree guard root
  C. https://www.CertBus.com/300-115.html
  B. (config-if) spanning-tree guard root

• Question 48:

  What command would be used to display detailed information regarding VRRP groups on the switch?

  A. switch# show vrrp
  B. switch# show standby
  C. switch# show vrrp detail
  D. switch# show standby detail
  A. switch# show vrrp

• Question 49:

  After configuring new data VLANs 1020 through 1030 on the VTP server, a network engineer notices that none of the VTP clients are receiving the updates. What is the problem?

  A. The VTP server must be reloaded.
  B. The VTP version number must be set to version 3.
  C. After each update to the VTP server, it takes up to 4 hours propagate.
  D. VTP must be stopped and restarted on the server.
  E. Another switch in the domain has a higher revision number than the server.
  B. The VTP version number must be set to version 3.

  ---

  VTP version 3 supports these features that are not supported in version 1 or version 2: Enhanced authentication--You can configure the authentication as hidden or secret. When hidden, the secret key from the password string is saved in the VLAN database file, but it does not appear in plain text in the configuration. Instead, the key associated with the password is saved in hexadecimal format in the running configuration. You must reenter the password if you enter a takeover command in the domain. When you enter the secret keyword, you can directly configure the password secret key. Support for extended range VLAN (VLANs 1006 to 4094) database propagation. VTP versions 1 and 2 propagate only VLANs 1 to 1005. If extended VLANs are configured, you cannot convert from VTP version 3 to version 1 or 2. Reference: http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/ software/ release/12.2_52_se/config uration/guide/swvtp.html#wp1316856

• Question 50:

  Which statement about Layer 2 protocol participation of ports involved m a SPAN session is true?

  A. Neither a SPAN source nor SPAN destination participates m any Layer 2 protocols.
  B. A SPAN source does not participate n any Layer 2 protocols
  C. A SPAN destination does not participate n any Layer 2 protocols
  D. Both SPAN source and SPAN destination participate in any Layer 2 protocols
  C. A SPAN destination does not participate n any Layer 2 protocols