Which method of Layer 3 switching uses a forwarding information base (FIB)?
A.
Topology-based switching
B.
Demand-based switching
C.
Route caching
D.
Flow-based switching
E.
None of the other alternatives apply
Explanation:
The Layer 3 engine (essentially a router) maintains routing information, whether from static
routes or dynamic routing protocols. Basically, the routing table is reformatted into an
ordered list with the most specific route first, for each IP destination subnet in the table. The
new format is called a Forwarding Information Base (FIB) and contains routing or forwarding
information that the network prefix can reference.
In other words, a route to 10.1.0.0/16 might be contained in the FIB, along with routes to
10.1.1.0/24 and 10.1.1.128/25, if those exist. Notice that these examples are increasingly
more specific subnets. In the FIB, these would be ordered with the most specific, or longest
match, first, followed by less specific subnets. When the switch receives a packet, it can
easily examine the destination address and find the longest match entry in the FIB. The FIB
also contains the next-hop address for each entry. When a longest match entry is found in
the FIB, the Layer 3 next-hop address is found, too.
A – Topology-based switching
Took the 300-115 exam yesterday, passed with 955/1000 points!
Got 40 questions in total, a lot of new questions, LABs: LACP, AAAdot1x and HSRP.
I got all questions from passleader 300-115 exam dumps (got vce and pdf files from: https://tr.im/gMzjr), all new questions were same as my exam, still valid until now!
Here are some new questions that appeared in my exam:
Q1
When SDM templates are configured, which action must be performed for the configuration to take effect?
A. reload
B. shutdown
C. write memory
D. backup config
Q2
Which statement about the MAC address sticky entries in the switch when the copy run start command is entered is true?
A. A sticky MAC address is retained when the switch reboots.
B. A sticky MAC address can be a unicast or multicast address.
C. A sticky MAC address is lost when the switch reboots.
D. A sticky MAC address ages out of the MAC address table after 600 seconds.
Q3
Enablement of which feature puts the port into err-disabled state when the port has PortFast enabled and it receives BPDUs?
A. BPDU filtering
B. BackboneFast
C. EtherChannel
D. BPDU guard
Q4
Interfaces are assigned to a VLAN, and then the VLAN is deleted. Which state are these interfaces in after the VLAN is deleted?
A. They remain up, but they are reassigned to the default VLAN.
B. They go down until they are reassigned to a VLAN.
C. They go down, but they are reassigned to the default VLAN.
D. They remain up, but they are reassigned to the native VLAN.
Q5
Which feature is automatically configured when an administrator enables a voice VLAN?
A. 802.1Q trunking
B. PortFast
C. QoS
D. private VLANs
Q6
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.
Good Luck To You!
Q1 A, Q2
Q3 D, Q4 A
Q5 B, Q6 C
New 300-115 Exam Questions and Answers Updated Recently (7/Feb/2017):
NEW QUESTION 1
Refer to the exhibit, which statement abort the current configuration on port GigabitEthernet2/0/1 is true?
!
interface GigabitEthernet2/0/1
switchport access vlan 700
switchport trunk allowed vlan 200,300,700
switchport mode trunk
end
!
A. It is an access port configured for a phone and a PC
B. It is a trunk port and the native VLAN is VLAN1
C. It is a trunk port and the natrve VL AN m VLAN 700
D. It is an access port in VLAN 700
Answer: B
NEW QUESTION 2
Which two statements about default FHRP behavior are true? (Choose two.)
A. A backup GLBP active virtual gateway can become active only if the current active virtual gateway fails.
B. Preemption is enabled by default.
C. Unless specifically Configured, the priority of an HSRP router is 200.
D. A standby HSRP router becomes active if it has a higher priority than the priority of the current active router.
E. A VRRP backup virtual router becomes the master router if its priority is higher than the priority of the current master router.
Answer: DE
NEW QUESTION 3
If StormControl is enabled on a port and the traffic reachesthe configured level, which two actions can be configured to occur? (Choose two.)
A. Trap
B. notify admin
C. redirect traffic
D. log
E. shut down
Answer: AC
NEW QUESTION 4
Which two options are advantages of deploying VTPv3? (Choose two.)
A. It stores the VTP domain password securely as a SHA-1 hash.
B. It adds an FCS field at the end of each VTP frame for consistency checking.
C. It supports the propagation of private VLANs.
D. It supports the use of AES to encrypt VTP messaging.
E. It can be configured to allow only one VTP server to make changes to the VTP domain.
Answer: DE
NEW QUESTION 5
Which statement about HSRP, GLBP, and VRRP is true?
A. VRRP group members communicate using multicast address 224.0.0.102.
B. MAC address 0000.0c07.acOc indicates that default gateway redundancy is provided through GLBP.
C. HSRP group members communicate using multicast address 224.0.0.18.
D. GLBP uses UDP port 3222 (source and destination) for hello messages.
Answer: A
NEW QUESTION 6
……
P.S. These New 300-115 Exam Questions Were Just Updated From The Real 300-115 Exam, You Can Get The Newest 300-115 Dumps In PDF And VCE From — http://www.passleader.com/300-115.html (242q VCE and PDF)
Good Luck!
Besides, that new 242Q 300-115 Dumps are Available here for Free:
https://drive.google.com/open?id=0B-ob6L_QjGLpV1dGa2Q3czNVNG8
Best Regards!
Hi Mansoor, I tried to download the dumps from your provided link but after downloading folder is showing empty can u pls share me pdf file at [email protected]
This answer is D not A
NEW QUESTION 5
Which statement about HSRP, GLBP, and VRRP is true?
A. VRRP group members communicate using multicast address 224.0.0.102.
B. MAC address 0000.0c07.acOc indicates that default gateway redundancy is provided through GLBP.
C. HSRP group members communicate using multicast address 224.0.0.18.
D. GLBP uses UDP port 3222 (source and destination) for hello messages.
Answer: D
New 300-115 Exam Questions and Answers Updated Recently (4/July/2017):
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
……
P.S. These New 300-115 Exam Questions Were Just Updated From The Real 300-115 Exam, You Can Get The Newest 300-115 Dumps In PDF And VCE From — http://www.passleader.com/300-115.html (401q VCE and PDF)
Good Luck!
Besides, that new 401Q 300-115 Dumps are Available here for Free:
https://drive.google.com/open?id=0B-ob6L_QjGLpV1dGa2Q3czNVNG8
Best Regards!