Cisco 300-115 Online Practice Questions and Exam Preparation

Cisco 300-115 Online Questions & Answers

• Question 441:

  While troubleshooting a network outage, a network engineer discovered an unusually high level of broadcast traffic coming from one of the switch interfaces. Which option decreases consumption of bandwidth used by broadcast traffic?

  A. storm control
  B. SDM routing
  C. Cisco IOS parser
  D. integrated routing and bridging
  E. Dynamic ARP Inspection
  A. storm control

  ---

  Storm control prevents traffic on a LAN from being disrupted by a broadcast, multicast, or unicast storm on a port. A LAN storm occurs when packets flood the LAN,

  creating excessive traffic and degrading network performance. Errors in the protocol-stack implementation, mistakes in network configuration, or users issuing a denial-of-service attack can cause a storm. Storm control is configured for the

  switch as a whole but operates on a per-port basis. By default, storm control is disabled.

  Storm control uses rising and falling thresholds to block and then restore the forwarding of broadcast, unicast, or multicast packets. You can also set the switch to shut down the port when the rising threshold is reached.

  Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2950/software/release/12- 1_22ea/ SCG/scg/swtrafc.html

• Question 442:

  Which two restrictions of the port security feature are true? (Choose two.)

  A. Static port MAC address assignments are not supported.
  B. It is not supported on PVLAN ports.
  C. It is not supported on EtherChannel port-channel interfaces.
  D. A single device can learn a maximum of three sticky MAC addresses.
  E. It is supported on destination SPAN ports.
  A. Static port MAC address assignments are not supported.
  C. It is not supported on EtherChannel port-channel interfaces.

• Question 443:

  Which statement about Cisco Discovery Protocol configuration on a Cisco switch is true?

  A. CDP is enabled by default and can be disabled globally with the command no cdp run.
  B. CDP is disabled by default and can be enabled globally with the command cdp enable.
  C. CDP is enabled by default and can be disabled globally with the command no cdp enable.
  D. CDP is disabled by default and can be enabled globally with the command cdp run.
  A. CDP is enabled by default and can be disabled globally with the command no cdp run.

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  CDP is enabled on your router by default, which means the Cisco IOS software will receive CDP information. CDP also is enabled on supported interfaces by default. To disable CDP on an interface, use the "no cdp enable interface"

  configuration command. To disable it globally, use the "no cdp run" command.

  Reference:

  http://www.cisco.com/en/US/docs/ios/12_2/configfun/command/reference/frf015.html#wp10175

• Question 444:

  Which two statements about configuring vlans on switches in VTP server mode are true?(choose two)

  A. Newly configured VLANs remain in the down state until they are manually enabled
  B. VLANs must be configured individually
  C. The first VLAN configured on a switch becomes the native VLAN
  D. Switches in the same domain propagate their VLAN configurations over VTP
  E. Devices in a topology without a router can communicate only with other devices on the same VLAN
  D. Switches in the same domain propagate their VLAN configurations over VTP
  E. Devices in a topology without a router can communicate only with other devices on the same VLAN

• Question 445:

  Which three features of AAA with TACACS+ are true? (Choose three.)

  A. It encrypts the entire transmission.
  B. It encrypts the password for transmission.
  C. It secures access to endpoint devices.
  D. It secures access to network devices.
  E. It separates authorization and authentication functions.
  F. It integrates authorization and authentication functions.
  A. It encrypts the entire transmission.
  D. It secures access to network devices.
  E. It separates authorization and authentication functions.

• Question 446:

  where can netflow export data for long term storage and analysis?

  A. another network device
  B. flat file
  C. syslog
  D. collector
  D. collector

• Question 447:

  For security reasons, the IT manager has prohibited users from dynamically establishing trunks with their associated upstream switch. Which two actions can prevent interface trunking? (Choose two.)

  A. Configure trunk and access interfaces manually.
  B. Disable DTP on a per interface basis.
  C. Apply BPDU guard and BPDU filter.
  D. Enable switchport block on access ports.
  A. Configure trunk and access interfaces manually.
  B. Disable DTP on a per interface basis.

  ---

  The Dynamic Trunking Protocol (DTP) is used to negotiate forming a trunk between two Cisco devices. DTP causes increased traffic, and is enabled by default, but may be disabled. To disable DTP, configure "switchport nonegotiate." This

  prevents the interface from generating DTP frames. You can use this command only when the interface switchport mode is access or trunk. You must manually configure the neighboring interface as a trunk interface to establish a trunk link,

  otherwise the link will be a non-trunking link.

  Reference: http://www.ciscopress.com/articles/article.asp?p=2181837andseqNum=8

• Question 448:

  When a Layer 2 EtherChannel is configured, which statement about placement of the IP address is true?

  A. The IP address is placed on the highest numbered member port.
  B. The IP address is placed on the port-channel logical interface.
  C. The IP address is placed on the lowest numbered member port.
  D. The IP address is assigned via DHCP only.
  B. The IP address is placed on the port-channel logical interface.

• Question 449:

  Which two statements about HSRP, GLBP, and VRRP are true? (Choose two.)

  A. HSRP is the preferred protocol to be used in multivendor environments
  B. VRRP has one master router, one standby router, and many listening routers.
  C. GLBP allows for a maximum of four MAC addresses per group.
  D. HSRP supports up to 255 groups in the same switch or router
  E. VRRP is a Cisco proprietary protocol.
  C. GLBP allows for a maximum of four MAC addresses per group.
  D. HSRP supports up to 255 groups in the same switch or router

• Question 450:

  Which UDLD mode does not shutdown/error disable the port when UDLD is detected?

  A. Aggressive mode
  B. Normal mode
  C. Loose mode
  D. Strict mode
  B. Normal mode