Which type of information does the DHCP snooping binding database contain?
A.
untrusted hosts with leased IP addresses
B.
trusted hosts with leased IP addresses
C.
untrusted hosts with available IP addresses
D.
trusted hosts with available IP addresses
Explanation:
DHCP snooping is a security feature that acts like a firewall between untrusted hosts and trusted DHCP servers. The DHCP snooping feature performs the following
activities:
· Validates DHCP messages received from untrusted sources and filters out invalid messages. · Rate-limits DHCP traffic from trusted and untrusted sources. ·
Builds and maintains the DHCP snooping binding database, which contains information about untrusted hosts with leased IP addresses.
· Utilizes the DHCP snooping binding database to validate subsequent requests from untrusted hosts.
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12- 2SX/configuration/guide/book/snoodhcp.pdf
New 300-115 Exam Questions and Answers (4/July/2017 Updated):
NEW QUESTION 390
Which feature do you implement so that an interface enters the root inconsistent state if it receives a superior BPDU?
A. DPDU filter
B. root guard
C. BPDU guard
D. loop guard
Answer: B
NEW QUESTION 391
In which two ways can a port respond to a port-security violation? (Choose two.)
A. The port enters the en-disabled state.
B. The Security Violation counter is incremented and the port sends an SNMP trap.
C. The Security Violation counter is incremented and the port sends a critical syslog message to the console.
D. The port triggers an EEM script to notify support staff and continues to forward traffic normally.
E. The port immediately begins to drop all traffic.
F. The port enters the shutdown state.
Answer: AF
NEW QUESTION 392
Which three functions does Dynamic ARP Inspection perform with invalid IP-to MAC address bindings? (Choose three.)
A. accepts
B. deletes
C. discards
D. bypasses
E. intercepts
F. logs
Answer: CEF
NEW QUESTION 393
Which two statements about 802.1Q are true? (Choose two.)
A. It encapsulates the original Ethernet frame and adds a VLAN identifier.
B. It increases the maximum size an Ethernet frame to 1094 bytes.
C. It is a Cisco proprietary protocol.
D. When It is enabled, it forces a recalculation of the frame check sequence field.
E. It supports 8-byte VLAN identifiers.
F. It adds a 32-bit field to the Ethernet frame between the source MAC address and length fields.
Answer: DF
NEW QUESTION 394
A physical switch port is part of an EtherChannel group. What happenes while the same port configured as a SPAN destination?
A. The port forwards traffic in the EtherChannel group and acts as a SPAN source simultaneously.
B. The port is removed from the EtherChannel group.
C. The port is put in the errdisabled state and can only be reenabled manually.
D. The operation is not allowed as an EtherChannel member cannot be a SPAN source port.
Answer: D
NEW QUESTION 395
Which two statements about CDP are true? (Choose two.)
A. CDP uses a TLV to advertise the native VLAN
B. CDP is not supported with SNMP
C. CDP is supported on Frame Relay sub interfaces.
D. CDP runs on OSI layer 2
E. CDP runs on OSI layer 1
Answer: AC
NEW QUESTION 396
Which two combinations of Ether Channel modes support the formation of an EtherChannel? (Choose two.)
A. desirable, passive
B. desirable, desirable
C. active, passive
D. passive, passive
E. active, desirable
Answer: BC
NEW QUESTION 397
……
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(15/Aug/2017 Updated) New 300-115 Exam Questions:
NEW QUESTION 400
Which two prerequisites for HSRP to become active on an interface are true? (Choose two.)
A. Cisco Express Forwarding must be disabled globally.
B. The VIP must be in the same subnet as the primary IP address.
C. A Virtual-MAC address must be configured on the interface.
D. An IP address must be configured on the interface.
E. PIM routing must be disabled on the interface.
Answer: BD
NEW QUESTION 401
Which two authentication types does VRRP support? (Choose two.)
A. Plain-text
B. CHAP
C. PAP
D. 802.1X
E. MD5
Answer: AE
NEW QUESTION 402
Which two limitations of LOCAL SPAN are true? (Choose two.)
A. The source and destination ports must reside in the same switch or switch stack.
B. It can monitor only traffic that ingresses or egresses on the source interface or VLAN.
C. A SPAN session can support multiple destination ports only if they are on the same VLAN.
D. EACH SPAN session supports only one source VLAN or interface.
E. A switch can support only one local SPAN session at a time.
Answer: AE
NEW QUESTION 403
Which Statement about the default SWITCH Database Management Template is true?
A. Template disables routing and supports the maximum number of unicast MAC addresses.
B. Template maximizes system resources for access control lists.
C. Template maximizes system resources for unicast routing.
D. Template gives balance to all functions.
Answer: D
Explanation:
Default – The default template gives balance to all functions.
NEW QUESTION 404
Which results happens when a non-trunking port that is configured with BPDU guard is connected to a device that is transmitting?
A. The port is moved into the spanning-tree blocking state.
B. There port is error-disabled.
C. A routing loop can occur on the network.
D. The port transitions to the connected state.
Answer: B
NEW QUESTION 405
Which two settings are the parts of a Default LLDP configuration? (Choose two.)
A. The LLDP hold time is 60 seconds.
B. The LLDP global state is Disabled.
C. The LLDP reinitialisation delay is 5 seconds.
D. The LLDP interface state is Enabled.
E. The LLDP timer is 60 seconds.
Answer: BD
Explanation:
Table 4 LLDP Default Configuration:
LLDP global state = Disabled.
LLDP interface state = Enabled for both transmit and receive operations when LLDP is globally enabled.
NEW QUESTION 406
……
NEW QUESTION 407
Which two statements about GLBP are true? (Choose two.)
A. The AVF responds to ARP request for the virtual IP address.
B. LAN client traffic is handled by the active AVF only.
C. The AVG assigns virtual MAC addresses to GLBP group members.
D. The AVF assigns virtual MAC addresses to GLBP group members.
E. The AVG responds to ARP requests for the Virtual IP address.
Answer: CE
Explanation:
The AVG assigns a virtual MAC address to each member of the GLBP group. The AVG is responsible for answering Address Resolution Protocol (ARP) requests for the virtual IP address.
NEW QUESTION 408
Which option is a CISCO recommended RSPAN configuration practice?
A. Define RSPAN VLAN before configuring an RSPAN source and destination session.
B. Assign access ports to an RSPAN VLAN like any other campus VLAN.
C. Use a different RSPAN VLAN for each session if configuring RSPAN on multiple switches.
D. Use only one destination port for EACH RSPAN Session.
Answer: A
NEW QUESTION 409
A network engineer wants to ensure Layer 2 isolation of customer traffic using a private VLAN. Which configuration must be configured before the VLAN is configured?
A. Ensure all switches are configured as VTP server mode.
B. Configure VTP Transparent mode.
C. Enable VTP version 3.
D. Disable VTP and manually assign VLANS.
Answer: B
NEW QUESTION 410
……
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