Cisco 300-115 Online Practice Questions and Exam Preparation

Cisco 300-115 Online Questions & Answers

• Question 551:

  Assuming that preempt is not configured, when does a router in an HSRP group assume the role of the active router for the group?

  A. A router in standby status will become the active router if it has a higher priority than the active router.
  B. A router in standby status will become the active router when it does not detect three consecutive hello messages from the active router.
  C. A router in standby status will become the active router when it does not detect any hello messages from the active router within the configured hold time.
  D. A router in listening status will become the active router when it does not detect any hello messages from the active router within the configured hold time.
  C. A router in standby status will become the active router when it does not detect any hello messages from the active router within the configured hold time.

• Question 552:

  Which two characteristics apply to Cisco Catalyst 6500 Series Switch supervisor redundancy using NSF? (Choose two.)

  A. supported by RIPv2, OSPF, IS-IS, and EIGRP
  B. uses the FIB table
  C. supports IPv4 and IPv6 multicast
  D. prevents route flapping
  B. uses the FIB table
  D. prevents route flapping

• Question 553:

  Which command prevents all access ports on a switch from sending or receiving BPDUs?

  A. spanning-tree portfast bpduguard default
  B. spanning-tree bpdufilter default
  C. spanning-tree bpdufilter enable
  D. spanning-tree portfast bpdufilter default
  D. spanning-tree portfast bpdufilter default

• Question 554:

  Which configuration do you apply to a device to place interface GigabitEthernet0/0 info VRRP group 10?

  A. interface GigabitEthernet0/0 ip address 172.16.13.2 265 255.255.0 standby 10 ip 172.16.13.254 255.255.255.0 standby 10 priority 120 standby 10 preempt
  B. interface GigabitEthernet0/0 description to Executive Offices A 08-38338 ip address 172.16.13.2 265.255.255.0 vrrp 10 ip 172.16.13.254 255.255.255.0 vrrp 10 active
  C. interface GigabitEthernet0/0 description to Executive Offices A 08-38338 ip address 172.16.13.2 255.255.250.0 vrrp group 10 ip 172.16.13.254 255.256.255.0 vrrp group 10 priority 120
  D. interface GigabitEthernet0/0 ip address 172.16.13.2 255.255.255.0 vrrp 10 ip 172.16.13.254 vrrp 10 priority 120 vrrp 10 preempt
  E. interface GigabitEthernet0/0 ip address 172.16.13.2 255.255.255.0 vrrp 10 ip 172.16.13.254 256.255.255.0 vrrp 10 priority 120 vrrp 10 preempt
  F. interface GigabitEthernet0/0 ip address 172.16.13.2 255.255.255.0 standby 10 ip 172.16.13.254
  D. interface GigabitEthernet0/0 ip address 172.16.13.2 255.255.255.0 vrrp 10 ip 172.16.13.254 vrrp 10 priority 120 vrrp 10 preempt

• Question 555:

  Refer to the exhibit.

  

  A network engineer wants to analyze all incoming and outgoing packets for an interface that is connected to an access switch. Which three items must be configured to mirror traffic to a packet sniffer that is connected to the distribution switch? (Choose three.)

  A. A monitor session on the distribution switch with a physical interface as the source and the remote SPAN VLAN as the destination
  B. A remote SPAN VLAN on the distribution and access layer switch
  C. A monitor session on the access switch with a physical interface source and the remote SPAN VLAN as the destination
  D. A monitor session on the distribution switch with a remote SPAN VLAN as the source and physical interface as the destination
  E. A monitor session on the access switch with a remote SPAN VLAN source and the physical interface as the destination
  F. A monitor session on the distribution switch with a physical interface as the source and a physical interface as the destination
  B. A remote SPAN VLAN on the distribution and access layer switch
  C. A monitor session on the access switch with a physical interface source and the remote SPAN VLAN as the destination
  D. A monitor session on the distribution switch with a remote SPAN VLAN as the source and physical interface as the destination

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  Explanation: You can analyze network traffic passing through ports or VLANs by using SPAN or RSPAN to send a copy of the traffic to another port on the switch or on another switch that has been connected to a network analyzer or other monitoring or security device. SPAN copies (or mirrors) traffic received or sent (or both) on source ports or source VLANs to a destination port for analysis. RSPAN supports source ports, source VLANs, and destination ports on different switches (or different switch stacks), enabling remote monitoring of multiple switches across your network. The traffic for each RSPAN session is carried over a user- specified RSPAN VLAN that is dedicated for that RSPAN session in all participating switches. The RSPAN traffic from the source ports or VLANs is copied into the RSPAN VLAN and forwarded over trunk ports carrying the RSPAN VLAN to a destination session monitoring the RSPAN VLAN. Each RSPAN source switch must have either ports or VLANs as RSPAN sources. The destination is always a physical port Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/ release/12- 2_55_se/configuration/ guide/3750xscg/swspan.html

• Question 556:

  Which two DTP negotiated interface mode combinations negotiate to form an access port? (Choose two )

  A. dynamic auto and dynamic auto
  B. renegotiate and trunk
  C. dynamic auto and trunk
  D. dynamic desirable and access
  E. dynamic desirable and dynamic auto
  A. dynamic auto and dynamic auto
  D. dynamic desirable and access

• Question 557:

  Which switch feature determines validity based on IP-to-MAC address bindings that are stored in a trusted database?

  A. Dynamic ARP Inspection
  B. storm control
  C. VTP pruning
  D. DHCP snooping
  A. Dynamic ARP Inspection

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  Explanation: Dynamic ARP inspection determines the validity of an ARP packet based on valid IP-to-MAC address bindings stored in a trusted database, the DHCP snooping binding database. This database is built by DHCP snooping if DHCP snooping is enabled on the VLANs and on the switch. If the ARP packet is received on a trusted interface, the switch forwards the packet without any checks. On untrusted interfaces, the switch forwards the packet only if it is valid. Reference: http:// www.cisco.com/c/en/us/ support/docs/switches/catalyst-3750-series- switches/72846-layer2-secftrs-catl3fixed.html

• Question 558:

  Refer to the exhibit.

  

  Which two statements about SW1 are true? (Choose two)

  A. Interface Gi5/1 is using a Cisco proprietary trunking protocol
  B. On Interface Gi5/1, all untagged traffic is tagged with VLAN 113
  C. The device is configured with the default MST region
  D. Interface Gi5/1 is using an industry-standard trunking protocol
  E. Interface Gi6/2 is the root port for VLAN 36
  F. On interface Gi6/2, all untagged traffic is tagged with VLAN 600
  D. Interface Gi5/1 is using an industry-standard trunking protocol
  F. On interface Gi6/2, all untagged traffic is tagged with VLAN 600

• Question 559:

  Which First Hop Redundancy Protocol is an IEEE Standard?

  A. GLBP
  B. HSRP
  C. VRRP
  D. OSPF
  C. VRRP

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  A comparison of the three First Hop Redundancy Protocols are listed below: GLBP HSRP VRRP Protocol (Gateway Load (Hot Standby Router (Virtual Redundancy Features Balancing Pro-protocol) Router Protocol) tocol) 1 AVG (Ac-tive Virtual Gateway).- up to 4 AVF routers on the 1 active router.- 1 group (Active -1 master router.- 1 standby router.- 1 or Virtual For-or more backup more listening warder) passing routers. routers. traffic.- up to Router role 1024 virtual routers (GLBP groups) per physical inter-face. -Can use real router -Use virtual ip ad- ip address, if not, the - Use virtual ip dress. one with highest pri- address. ority become master. Cisco propri-Scope Cisco proprietary IEEE standard etary Active Virtual Active Router: Master Router: (*) Gateway: 1-Highest Priority 1-Highest Priority 1-Highest Pri-Election 2-Highest IP 2-Highest IP ority (tiebreaker) (tiebreaker) 2-Highest IP (tiebreaker) Tracking yes yes yes Optimization Preempt yes yes yes features Timer ad-yes yes yes justments Traffic type 224.0.0.2 udp 1985 224.0.0.18 IP 112 224.0.0.102 udp (version1) 3222 224.0.0.102-udp 1985 (version2) Advertisement 1 Hello 3 sec-Hello 3 seconds second onds (Master Down Inter-Timers val)3 * Advertisement (Hold) 10 sec- + skew time (Hold) 10 seconds onds (Skew time)(256-pri-ority) / 256 Load-balancing oriented-Weighted algo- -Multiple HSRP - Multiple VRRP rithm.- Host-degroup per in- group per in-pendent algo-terface/SVI/routed terface/SVI/routed rithm. int. int. -Round-Robin algorithm (de-fault). Load-balancing functional-Clients are ity transparently updated with Requires appropriate Requires appropriate virtual MAC distribution of Virtual distribution of Virtual according to GW IP per Clients for GW IP per Clients for load-balancing optimal load-balanc- optimal load- balanc- algorithm ing.(generally through ing.(generally through through ARP DHCP) DHCP) requesting a unique virtual gateway. Reference: http:// cciethebeginning.wordpress.com/2008/08/23/router-high- availability-protocol- comparison-2/

• Question 560:

  A question about the port number and multicast address of VRRP. (CONCEPT ONLY)

  A. VRRP uses multicast address 224.0.0.18 and uses UDP port 112.
  A. VRRP uses multicast address 224.0.0.18 and uses UDP port 112.