Cisco 300-115 Online Practice Questions and Exam Preparation

Cisco 300-115 Online Questions & Answers

• Question 891:

  A switch has been configured with the vlan dot1q tag native command. Which statement describes what the switch does with untagged frames that it receive?

  A. Untagged frames are forwarded via the default VLAN
  B. It drops the untagged frames
  C. The trunked port is put in err-disable state
  D. Untagged frames are forwarded via the native VLAN
  B. It drops the untagged frames

• Question 892:

  Which feature describes MAC addresses that are dynamically learned or manually configured, stored in the address table, and added to the running configuration?

  A. sticky
  B. dynamic
  C. static
  D. secure
  A. sticky

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  Explanation: With port security, you can configure MAC addresses to be sticky. These can be dynamically learned or manually configured, stored in the address table, and added to the running configuration. If these addresses are saved in the configuration file, the interface does not need to dynamically relearn them when the switch restarts. Although sticky secure addresses can be manually configured, it is not recommended. Reference: http://www.cisco.com/c/en/us/td/docs/ switches/lan/catalyst4500/12- 2/25ew/ configuration/guide/conf/port_sec.pdf

• Question 893:

  A network engineer configured an Ethernet switch using these commands. Switchone(config) # Spanning-tree portfast bpdufilter default Which statement about the spanning-tree portfast feature on the switch is true?

  A. If an interface is enabled for portfast receives BDPU, the port goes through the spanning-tree listening, learning, and forwarding states.
  B. If an interface is enabled for portfast receives BDPU, the port does not go through the spanning-tree listening, learning, and forwarding states.
  C. If an interface is enabled for portfast receives BDPU, the port is shut down immediately.
  D. If an interface is enabled for portfast receives BDPU, the port goes into the spanning-tree inconsistent state.
  A. If an interface is enabled for portfast receives BDPU, the port goes through the spanning-tree listening, learning, and forwarding states.

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  STP PortFast causes a Layer 2 LAN interface configured as an access port to enter the forwarding state immediately, bypassing the listening and learning states. However, the "Spanning-tree portfast bpdufilter default" command specifies that if a BPDU is received on that port, then the default action of STP of listening, learning, and forwarding states should be used.

• Question 894:

  Refer to the exhibit.

  

  How can the traffic that is mirrored out the GigabitEthernet0/48 port be limited to only traffic that is received or transmitted in VLAN 10 on the GigabitEthernet0/1 port?

  A. Change the configuration for GigabitEthernet0/48 so that it is a member of VLAN 10.
  B. Add an access list to GigabitEthernet0/48 to filter out traffic that is not in VLAN 10.
  C. Apply the monitor session filter globally to allow only traffic from VLAN 10.
  D. Change the monitor session source to VLAN 10 instead of the physical interface.
  C. Apply the monitor session filter globally to allow only traffic from VLAN 10.

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  To start a new flow-based SPAN (FSPAN) session or flow-based RSPAN (FRSPAN) source or destination session, or to limit (filter) SPAN source traffic to specific VLANs, use the monitor session filter global configuration command.

  Usage Guidelines You can set a combined maximum of two local SPAN sessions and RSPAN source sessions. You can have a total of 66 SPAN and RSPAN sessions on a switch or switch stack. You can monitor traffic on a single VLAN or on a series or range of ports or VLANs. You select a series or range of VLANs by using the [ , | -] options. If you specify a series of VLANs, you must enter a space before and after the comma. If you specify a range of VLANs, you must enter a space before and after the hyphen ( -). VLAN filtering refers to analyzing network traffic on a selected set of VLANs on trunk source ports. By default, all VLANs are monitored on trunk source ports. You can use the monitor session session_number filter vlan vlan-id command to limit SPAN traffic on trunk source ports to only the specified VLANs. VLAN monitoring and VLAN filtering are mutually exclusive. If a VLAN is a source, VLAN filtering cannot be enabled. If VLAN filtering is configured, a VLAN cannot become a source. Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/network_m anagement/command_reference/b_nm_3se_3850_cr/ b_nm_3se_3850_cr_chapter_010.html#wp3 875419997

• Question 895:

  Which of two device types does DHCP snooping treat as untrusted in an ISP environment? (Choose two.)

  A. user-facing provider edge devices
  B. provider edge devices
  C. provider devices
  D. end host devices
  E. customer edge devices
  D. end host devices
  E. customer edge devices

• Question 896:

  A question about the number of Active Virtual Gateways (AVG) that can be used. (CONCEPT ONLY)

  A. 1 - only one can be elected on a switch.
  A. 1 - only one can be elected on a switch.

• Question 897:

  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?

  

  ——————Exhibit Start———————A. Router R2 is the primary gateway for 10.1.0.1 and Router R1 is the primary gateway for 10.1.0.10.
  B. PC2 and PC4 use router R1 as the primary gateway.
  C. The Four PCs send all request to router R1, which forward traffic to router R2 as necessary.
  D. Router R1 is the primary gateway for 10.1.0.1 and router R2 is the primary gateway for 10.1.0.10
  E. PC1 and PC3 use router R1 as the primary gateway.
  F. The Four PCs send packets round-robin between routers R1 and R2.

  D. Router R1 is the primary gateway for 10.1.0.1 and router R2 is the primary gateway for 10.1.0.10
  E. PC1 and PC3 use router R1 as the primary gateway.

• Question 898:

  Which action allows a network engineer to limit a default VLAN from being propagated across all trunks?

  A. Upgrade to VTP version 3 for advanced feature set support.
  B. Enable VTP pruning on the VTP server.
  C. Manually prune default VLAN with switchport trunk allowed vlans remove.
  D. Use trunk pruning vlan 1.
  C. Manually prune default VLAN with switchport trunk allowed vlans remove.

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  Manaully pruning the default VLAN (1) can only be done with the "switchport trunk allowed vlans remove" command. VLAN 1 is not VTP pruning eligible so it cannot be done via VTP pruning. The "trunk pruning vlan 1" option is not a valid command.

• Question 899:

  Which four LACP components are used to determine which hot-standby links become active after an interface failure within an EtherChannel bundle? (Choose four.)

  A. LACP system priority
  B. LACP port priority
  C. interface MAC address
  D. system ID
  E. port number
  F. hot-standby link identification number
  G. interface bandwidth
  A. LACP system priority
  B. LACP port priority
  D. system ID
  E. port number

• Question 900:

  What statement is true about PVST?

  A. PVST+ is the default STP mode on Cisco switches
  B. Rapid PVST+ is the default STP mode on Cisco switches
  C. Is the default mode on Cisco switches
  D. STP is the default mode on Cisco switches
  A. PVST+ is the default STP mode on Cisco switches