2019 Free Microsoft EnsurePass 100-105 Dumps VCE and PDF Download Part 3

EnsurePass
Exam Dumps
100-105 Dumps VCE and PDF
2019 100-105 Dumps VCE and PDF

 

QUESTION 21

Which three statements are true about the operation of a full-duplex Ethernet network? (Choose three.)

 

A.

There are no collisions in full-duplex mode.

B.

A dedicated switch port is required for each full-duplex node.

C.

Ethernet hub ports are preconfigured for full-duplex mode.

D.

In a full-duplex environment, the host network card must check for the availability of the network media before transmitting.

E.

The host network card and the switch port must be capable of operating in full-duplex mode.

 

Correct Answer: ABE

Explanation:

Half-duplex Ethernet is defined in the original 802.3 Ethernet and Cisco says you only use one wire pair with a digital signal running in both directions on the wire. It also uses the CSMA/CD protocol to help prevent collisions and to permit retransmitting if a collision does occur. If a hub is attached to a switch, it must operate in half-duplex mode because the end stations must be able to detect collisions. Half-duplex Ethernet–typically 10BaseT–is only about 30 to 40 percent efficient as Cisco sees it, because a large 10BaseT network will usually only give you 3- to 4Mbps–at most.

Full-duplex Ethernet uses two pairs of wires, instead of one wire pair like half duplex. Also, full duplex uses a point-to-point connection between the transmitter of the transmitting device and the receiver of the receiving device, which means that with full-duplex data transfer, you get a faster data transfer compared to half duplex. And because the transmitted data is sent on a different set of wires than the received data, no collisions occur. The reason you don’t need to worry about collisions is because now Full-duplex Ethernet is like a freeway with multiple lanes instead of the single-lane road provided by half duplex. Full-duplex Ethernet is supposed to offer 100 percent efficiency in both directions; this means you can get 20Mbps with a 10Mbps Ethernet running full duplex, or 200Mbps for FastEthernet.

 

 

QUESTION 22

Refer to the exhibit. A network has been planned as shown. Which three statements accurately describe the areas and devices in the network plan? (Choose three.)

 

image018

 

A.

Network Device A is a switch.

B.

Network Device B is a switch.

C.

Network Device A is a hub.

D.

Network Device B is a hub.

E.

Area 1 contains a Layer 2 device.

F.

Area 2 contains a Layer 2 device.

 

Correct Answer: ADE

Explanation:

Switches use a separate collision domain for each port, so device A must be a switch. Hubs, however, place all ports in the same collision domain so device B is a hub. Switches reside in layer 2 while hubs are layer 1 devices.

 

 

QUESTION 23

A workstation has just resolved a browser URL to the IP address of a server. What protocol will the workstation now use to determine the destination MAC address to be placed into frames directed toward the server?

 

A.

HTTP

B.

DNS

C.

DHCP

D.

RARP

E.

ARP

 

Correct Answer: E

Explanation:

The RARP protocol is used to translate hardware interface addresses to protocol addresses. The RARP message format is very similar to the ARP format. When the booting computer sends the broadcast ARP request, it places its own hardware address in both the sending and receiving fields in the encapsulated ARP data packet. The RARP server will fill in the correct sending and receiving IP addresses in its response to the message. This way the booting computer will know its IP address when it gets the message from the RARP server.

 

 

QUESTION 24

How does a Layer 2 switch differ from a hub?

 

A.

A switch does not induce any latency into the frame transfer time.

B.

A switch tracks MAC addresses of directly-connected devices.

C.

A switch operates at a lower, more efficient layer of the OSI model.

D.

A switch decreases the number of broadcast domains.

E.

A switch decreases the number of collision domains.

 

Correct Answer: B

Explanation:

Some of the features and functions of a switch include:

A switch is essentially a fast, multi-port bridge, which can contain dozens of ports. Rather than creating two collision domains, each port creates its own collision domain. In a network of twenty nodes, twenty collision domains exist if each node is plugged into its own switch port.

If an uplink port is included, one switch creates twenty-one single-node collision domains. A switch dynamically builds and maintains a Content-Addressable Memory (CAM) table, holding all of the necessary MAC information for each port.

For a detailed description of how switches operate, and their key differences to hubs, see the reference link below.

Reference: http://www.cisco.com/warp/public/473/lan-switch-cisco.shtml

QUESTION 25

Refer to the exhibit. If the hubs in the graphic were replaced by switches, what would be virtually eliminated?

 

image019

 

A.

broadcast domains

B.

repeater domains

C.

Ethernet collisions

D.

signal amplification

E.

Ethernet broadcasts

 

Correct Answer: C

Explanation:

Modern wired networks use a network switch to eliminate collisions. By connecting each device directly to a port on the switch, either each port on a switch becomes its own collision domain (in the case of half duplex links) or the possibility of collisions is eliminated entirely in the case of full duplex links.

 

 

QUESTION 26

What are two common TCP applications? (Choose two.)

 

A.

TFTP

B.

SMTP

C.

SNMP

D.

FTP

E.

DNS

 

Correct Answer: BD

Explanation:

SMTP uses TCP port 25, while FTP uses TCP ports 20 and 21.

Reference: http://pentestlab.wordpress.com/2012/03/05/common-tcpip-ports/

 

QUESTION 27

DRAG DROP

On the left are various network protocols. On the right are the layers of the TCP/IP model. Assuming a reliable connection is required, move the protocols on the left to the TCP/IP layers on the right to show the proper encapsulation for an email message sent by a host on a LAN. (Not all options are used.)

 

image021

 

Correct Answer:

image023

 

 

QUESTION 28

What must occur before a workstation can exchange HTTP packets with a web server?

 

A.

A UDP connection must be established between the workstation and its default gateway.

B.

A UDP connection must be established between the workstation and the web server.

C.

A TCP connection must be established between the workstation and its default gateway.

D.

A TCP connection must be established between the workstation and the web server.

E.

An ICMP connection must be established between the workstation and its default gateway.

F.

An ICMP connection must be established between the workstation and the web server.

 

Correct Answer: D

Explanation:

HTTP uses TCP port 80, and a TCP port 80 connection must be established for HTTP communication to occur.

http://pentestlab.wordpress.com/2012/03/05/common-tcpip-ports/

 

QUESTION 29

Refer to the exhibit. SwitchA receives the frame with the addressing shown. According to the command output also shown in the exhibit, how will SwitchA handle this frame?

 

image024

 

A.

It will drop the frame.

B.

It will forward the frame out port Fa0/6 only.

C.

It will flood the frame out all ports.

D.

It will flood the frame out all ports except Fa0/3.

 

Correct Answer: B

Explanation:

Switches keep the learned MAC addresses in a table, so that when a frame comes in with a destination MAC address that the switch has already learned, it will forward it to that port only. If a frame comes in with a destination MAC that is not already in the MAC address table, then the frame will be flooded to all ports except for the one that it came in on. In this case, Switch A already knows that 00b0.d0da.cb56 resides on port fa0/6, so it will forward the from out that port.

 

 

QUESTION 30

A network administrator is connecting PC hosts A and B directly through their Ethernet interfaces as shown in the graphic. Ping attempts between the hosts are unsuccessful. What can be done to provide connectivity between the hosts? (Choose two.)

 

image025

 

A.

A crossover cable should be used in place of the straight-through cable.

B.

A rollover cable should be used in place of the straight-through cable.

C.

The subnet masks should be set to 255.255.255.192

D.

A default gateway needs to be set on each host.

E.

The hosts must be reconfigured to use private IP addresses for direct connections of this type.

F.

The subnet masks should be set to 255.255.255.0

 

Correct Answer: AF

Explanation:

If you need to connect two computers but you don’t have access to a network and can’t set up an ad hoc network, you can use an Ethernet crossover cable to create a direct cable connection.

Generally speaking, a crossover cable is constructed by reversing (or crossing over) the order of the wires inside so that it can connect two computers directly. A crossover cable looks almost exactly like a regular Ethernet cable (a straight-through cable), so make sure you have a crossover cable before following these steps.

Both devices need to be on the same subnet, and since one PC is using 192.1.1.20 and the other is using 192.1.1.201, the subnet mask should be changed to 255.255.255.0.


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