2019 Free Microsoft EnsurePass 300-115 Dumps VCE and PDF Download Part 1

EnsurePass
Exam Dumps
300-115 Dumps VCE and PDF
2019 300-115 Dumps VCE and PDF

 

QUESTION 1

What is the size of the VLAN field inside an 802.1q frame?

 

A.

8-bit

B.

12-bit

C.

16-bit

D.

32-bit

 

Correct Answer: B

Explanation:

The VLAN field is a 12-bit field specifying the VLAN to which the frame belongs. The hexadecimal values of 0x000 and 0xFFF are reserved. All other values may be used as VLAN identifiers, allowing up to 4,094 VLANs

Reference: http://en.wikipedia.org/wiki/IEEE_802.1Q

 

 

QUESTION 2

A manager tells the network engineer to permit only certain VLANs across a specific trunk interface. Which option can be configured to accomplish this?

 

A.

allowed VLAN list

B.

VTP pruning

C.

VACL

D.

L2P tunneling

 

Correct Answer: A

Explanation:

When a trunk link is established, all of the configured VLANs are allowed to send and receive traffic across the link. VLANs 1 through 1005 are allowed on each trunk by default. However, VLAN traffic can be removed from the allowed list. This keeps traffic from the VLANs from passing over the trunk link.

Note: The allowed VLAN list on both the ends of the trunk link should be the same. For Integrated Cisco IOS Software based switches, perform these steps:

1. To restrict the traffic that a trunk carries, issue the switchport trunk vlan-list interface configuration command.

This removes specific VLANs from the allowed list.

Reference: https://supportforums.cisco.com/document/11836/how-define-vlans-allowed-trunk-link

 

 

QUESTION 3

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.

 

Correct Answer: AB

Explanation:

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=2181837&seqNum=8

 

 

QUESTION 4

Refer to the exhibit. Which option shows the expected result if a show vlan command is issued?

 

image002

 

A.

image003

B.

image004

C.

image005

D.

image006

 

Correct Answer: A

Explanation:

In this case, the port has been configured both as a trunk and as a switchport in data vlan 10.

Obviously, a port can not be both, soeven thoughCisco IOSwill accept both, the port will actually be used as a trunk, ignoring the switchport access VLAN 10 command.

 

 

QUESTION 5

In a Cisco switch, what is the default period of time after which a MAC address ages out and is discarded?

 

A.

100 seconds

B.

180 seconds

C.

300 seconds

D.

600 seconds

 

Correct Answer: C

Explanation:

To configure the aging time for all MAC addresses, perform this task:

 

Command

Purpose

Step 1

switch#configure terminal

Enters configuration mode.

Step 2

switch(config)#mac-address-table aging-timeseconds[vlanvlan_id] Specifies the time before an entry ages out and is discarded from the MAC address table. The range is from 0 to 1000000;the default is 300 seconds. Entering the value 0 disables the MAC aging. If a VLAN is not specified, the aging specification applies to all VLANs.

 

Reference:

http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/MACAddress.html

 

 

QUESTION 6

Which statement about Cisco devices learning about each other through Cisco Discovery Protocol is true?

 

A.

Each device sends periodic advertisements to multicast address 01:00:0C:CC:CC:CC.

B.

Each device broadcasts periodic advertisements to all of its neighbors.

C.

Each device sends periodic advertisements to a central device that builds the network topology.

D.

Each device sends periodic advertisements to all IP addresses in its ARP table.

 

Correct Answer: A

Explanation:

Cisco devices send periodic CDP announcements to the multicast destination address 01-00-0c-cc-cc-cc, out each connected network interface. These multicast packets may be received by Cisco switches and other networking devices that support CDP into their connected network interface.

Reference:http://network.spravcesite.net/subdom/network/index.php?id=cdp

 

 

QUESTION 7

Refer to the exhibit. Which EtherChannel negotiation protocol is configured on the interface f0/13 – f0/15?

 

image008

A.

Link Combination Control Protocol

B.

Port Aggregation Protocol

C.

Port Combination Protocol

D.

Link Aggregation Control Protocol

 

Correct Answer: B

Explanation:

PAgP modes are off, auto, desirable, and on. Only the combinations auto-desirable, desirable-desirable, and on-on will allow a channel to be formed. .

 

The Link Aggregate Control Protocol (LACP) trunking supports four modes of operation:

In this example, we see that fa 0/13, fa0/14, and fa0/15 are all in Port Channel 12, which is

operating in desirable mode, which is only a PAgP mode. all in Port Channel 12, which is operating in desirable mode, which is only a PAgP mode.

 

 

QUESTION 8

Which two protocols can be automatically negotiated between switches for trunking? (Choose two.)

 

A.

PPP

B.

DTP

C.

ISL

D.

HDLC

E.

DLCI

F.

DOT1Q

 

Correct Answer: CF

Explanation:

Switches such as the Catalyst 3550 that are capable of either 802.1Q or ISL trunking encapsulation, the switchport trunk encapsulation [dot1q | isl | negotiate] interface command must be used prior to the switchport mode trunk command. Reference:https://learningnetwork.cisco.com/servlet/JiveServlet/previewBody/14792-102-1-57313/Dynamic%20Trunking%20Protocol.PDF

 

 

QUESTION 9

Which option is a possible cause for an errdisabled interface?

 

A.

routing loop

B.

cable unplugged

C.

STP loop guard

D.

security violation

 

Correct Answer: D

Explanation:

There are various reasons for the interface to go into errdisable. The reason can be:

Duplex mismatch

Port channel misconfiguration

BPDU guard violation

UniDirectional Link Detection (UDLD) condition

Late-collision detection

Link-flap detection

Security violation

Port Aggregation Protocol (PAgP) flap

Layer 2 Tunneling Protocol (L2TP) guard

DHCP snooping rate-limit

Incorrect GBIC / Small Form-Factor Pluggable (SFP) module or cable Address Resolution Protocol (ARP) inspection

Inline power

Reference:http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00 806cd87b.shtml

 

 

QUESTION 10

A network engineer notices inconsistent Cisco Discovery Protocol neighbors according to the diagram that is provided. The engineer notices only a single neighbor that uses Cisco Discovery Protocol, but it has several routing neighbor relationships. What would cause the output to show only the single neighbor?

 

A.

The routers are connected via a Layer 2 switch.

B.

IP routing is disabled on neighboring devices.

C.

Cisco Express Forwarding is enabled locally.

D.

Cisco Discovery Protocol advertisements are inconsistent between the local and remote devices.

 

Correct Answer: A

Explanation:

If all of the routers are connected to each other using a layer 2 switch, then each router will only have the single switch port that it connects to as its neighbor. Even though multiple routing neighbors can be formed over a layer 2 network, only the physical port that it connects to will be seen as a CDP neighbor. CDP can be used to determine the physical topology, but not necessarily the logical topology.


Leave a Reply

Your email address will not be published. Required fields are marked *

  • Categories

  • Tags

  • Hot Exams

  • Hot Exams

  • Hot Catageories

  • microsoft dumps

    62-193 Dumps
    70-243 Dumps
    70-246 Dumps
    70-247 Dumps
    70-331 Dumps
    70-332 Dumps
    70-333 Dumps
    70-334 Dumps
    70-339 Dumps
    70-341 Dumps
    70-342 Dumps
    70-345 Dumps
    70-346 Dumps
    70-347 Dumps
    70-348 Dumps
    70-354 Dumps
    70-355 Dumps
    70-357 Dumps
    70-383 Dumps
    70-384 Dumps
    70-385 Dumps
    70-398 Dumps
    70-410 Dumps
    70-411 Dumps
    70-412 Dumps
    70-413 Dumps
    70-414 Dumps
    70-417 Dumps
    70-461 Dumps
    70-462 Dumps
    70-463 Dumps
    70-464 Dumps
    70-465 Dumps
    70-466 Dumps
    70-467 Dumps
    70-469 Dumps
    70-470 Dumps
    70-473 Dumps
    70-475 Dumps
    70-480 Dumps
    70-481 Dumps
    70-482 Dumps
    70-483 Dumps
    70-484 Dumps
    70-485 Dumps
    70-486 Dumps
    70-487 Dumps
    70-488 Dumps
    70-489 Dumps
    70-490 Dumps
    70-491 Dumps
    70-492 Dumps
    70-494 Dumps
    70-496 Dumps
    70-497 Dumps
    70-498 Dumps
    70-499 Dumps
    70-517 Dumps
    70-532 Dumps
    70-533 Dumps
    70-534 Dumps
    70-535 Dumps
    70-537 Dumps
    70-640 Dumps
    70-642 Dumps
    70-646 Dumps
    70-673 Dumps
    70-680 Dumps
    70-681 Dumps
    70-682 Dumps
    70-684 Dumps
    70-685 Dumps
    70-686 Dumps
    70-687 Dumps
    70-688 Dumps
    70-689 Dumps
    70-692 Dumps
    70-694 Dumps
    70-695 Dumps
    70-696 Dumps
    70-697 Dumps
    70-698 Dumps
    70-703 Dumps
    70-705 Dumps
    70-713 Dumps
    70-734 Dumps
    70-735 Dumps
    70-740 Dumps
    70-741 Dumps
    70-742 Dumps
    70-743 Dumps
    70-744 Dumps
    70-745 Dumps
    70-761 Dumps
    70-762 Dumps
    70-764 Dumps
    70-765 Dumps
    70-767 Dumps
    70-768 Dumps
    70-773 Dumps
    70-774 Dumps
    70-775 Dumps
    70-776 Dumps
    70-778 Dumps
    70-779 Dumps
    70-980 Dumps
    70-981 Dumps
    70-982 Dumps
    74-343 Dumps
    74-344 Dumps
    74-409 Dumps
    74-678 Dumps
    74-697 Dumps
    77-418 Dumps
    77-419 Dumps
    77-420 Dumps
    77-421 Dumps
    77-422 Dumps
    77-423 Dumps
    77-424 Dumps
    77-425 Dumps
    77-426 Dumps
    77-427 Dumps
    77-428 Dumps
    77-600 Dumps
    77-601 Dumps
    77-602 Dumps
    77-603 Dumps
    77-604 Dumps
    77-605 Dumps
    77-725 Dumps
    77-726 Dumps
    77-727 Dumps
    77-728 Dumps
    77-729 Dumps
    77-730 Dumps
    77-731 Dumps
    77-853 Dumps
    77-881 Dumps
    77-882 Dumps
    77-883 Dumps
    77-884 Dumps
    77-885 Dumps
    77-886 Dumps
    77-887 Dumps
    77-888 Dumps
    77-891 Dumps
    98-349 Dumps
    98-361 Dumps
    98-362 Dumps
    98-363 Dumps
    98-364 Dumps
    98-365 Dumps
    98-366 Dumps
    98-367 Dumps
    98-368 Dumps
    98-369 Dumps
    98-372 Dumps
    98-373 Dumps
    98-374 Dumps
    98-375 Dumps
    98-379 Dumps
    98-380 Dumps
    98-381 Dumps
    98-382 Dumps
    98-383 Dumps
    98-388 Dumps
    AZ-100 Dumps
    AZ-101 Dumps
    AZ-102 Dumps
    INF-203x Dumps
    INF-204x Dumps
    INF-205x Dumps
    INF-206x Dumps
    MB2-700 Dumps
    MB2-701 Dumps
    MB2-702 Dumps
    MB2-703 Dumps
    MB2-704 Dumps
    MB2-706 Dumps
    MB2-707 Dumps
    MB2-708 Dumps
    MB2-709 Dumps
    MB2-710 Dumps
    MB2-711 Dumps
    MB2-712 Dumps
    MB2-713 Dumps
    MB2-714 Dumps
    MB2-715 Dumps
    MB2-716 Dumps
    MB2-717 Dumps
    MB2-718 Dumps
    MB2-719 Dumps
    MB2-877 Dumps
    MB5-705 Dumps
    MB6-700 Dumps
    MB6-701 Dumps
    MB6-702 Dumps
    MB6-703 Dumps
    MB6-704 Dumps
    MB6-705 Dumps
    MB6-884 Dumps
    MB6-885 Dumps
    MB6-886 Dumps
    MB6-889 Dumps
    MB6-890 Dumps
    MB6-892 Dumps
    MB6-893 Dumps
    MB6-894 Dumps
    MB6-895 Dumps
    MB6-896 Dumps
    MB6-897 Dumps
    MB6-898 Dumps