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New Cisco 100-105 Exam Dumps Collection (Question 14 - Question 23)

New Questions 14

Which three statements are correct about RIP version 2? (Choose three)

A. It uses broadcast for its routing updates.

B. It supports authentication.

C. It is a classless routing protocol.

D. It has a lower default administrative distance then RIP version 1.

E. It has the same maximum hop count as RIP version 1.

F. It does not send the subnet mask any updates.

Answer: B,C,E

Explanation:

A and E are correct according to the theory of RIP.

RIP version 1 updates are broadcasts, and RIP version 2 updates are multicast to

224.0.0.9 -> B is not correct.

RIP v1 is a classful routing protocol but RIP v2 is a classless routing protocol -> C is correct.

RIPv1 and RIPv2 have the same default administrative distance of 120 -> D is not correct. RIPv2 is a classless routing protocol so it does send the subnet mask in updates -> F is not correct.

New Questions 15

Which two commands will display the current IP address and basic Layer 1 and 2 status of an interface? (Choose two.)

A. router#show version

B. router#show ip interface

C. router#show protocols

D. router#show controllers

E. router#show running-config

Answer: B,C

Explanation:

The outputs of u201cshow protocolsu201d and u201cshow ip interfaceu201d are shown below:

Global values:Internet Protocol routing is enabledSerial0/0 is up, line protocol is downInternet address is 10.1.1.1/30Serial0/1 is up, line protocol is downInternet address is 209.65.200.225/30Serial0/2 is up, line protocol is downSerial0/3 is up, line protocol is downNVI0 is up, line protocol is upInterface is unnumbered. Using address of NVI0 (0.0.0.0)Loopback0 is up, line protocol is upInternet address is 10.1.10.1/32Loopback1 is up, line protocol is upInternet address is 10.1.2.1/27Loopback6 is up, line protocol is up

Serial0/0 is up, line protocol is downInternet address is 10.1.1.1/30Broadcast address is 255.255.255.255Address determined by non-volatile memoryMTU is 1500 bytesHelper address is not setDirected broadcast forwarding is disabledMulticast reserved groups joined: 224.0.0.5Outgoing access list is not setInbound access list is not setProxy ARP is enabledLocal Proxy ARP is disabledSecurity level is defaultSplit horizon is disabledICMP redirects are always sentICMP unreachables are always sentICMP mask replies are never sentIP fast switching is enabledIP fast switching on the same interface is enabledIP Flow switching is disabledIP CEF switching is disabledIP Feature Fast switching turbo vectorIP multicast fast switching is enabledIP multicast distributed fast switching is disabledIP route- cache flags are FastRouter Discovery is disabledIP output packet accounting is disabledIP access violation accounting is disabledTCP/IP header compression is disabledRTP/IP header compression is disabledPolicy routing is disabledNetwork address translation is enabled, interface in domain insideBGP Policy Mapping is disabledWCCP Redirect outbound is disabledWCCP Redirect inbound is disabledWCCP Redirect exclude is disabled

New Questions 16

Which of the following is true regarding the configuration of SwitchA?

A. only 5 simultaneous remote connections are possible

B. remote connections using ssh will require a username and password

C. only connections from the local network will be possible

D. console access to SwitchA requires a password

Answer: B

New Questions 17

Refer to the topology and switching table shown in the graphic.

Host B sends a frame to Host C. What will the switch do with the frame?

A. Drop the frame

B. Send the frame out all ports except port 0/2

C. Return the frame to Host B

D. Send an ARP request for Host C

E. Send an ICMP Host Unreachable message to Host B

F. Record the destination MAC address in the switching table and send the frame directly to Host C

Answer: B

New Questions 18

How does TCP differ from UDP? (Choose two.)

A. TCP provides best effort delivery.

B. TCP provides synchronized communication.

C. TCP segments are essentially datagrams.

D. TCP provides sequence numbering of packets.

E. TCP uses broadcast delivery.

Answer: B,D

Explanation:

Because TCP is a connection-oriented protocol responsible for ensuring the transfer of a datagram from the source to destination machine (end-to-end communications), TCP must receive communications messages from the destination machine to acknowledge receipt of the datagram. The term virtual circuit is usually used to refer to the handshaking that goes on between the two end machines, most of which are simple acknowledgment messages (either confirmation of receipt or a failure code) and datagram sequence numbers.

Rather than impose a state within the network to support the connection, TCP uses synchronized state between the two endpoints. This synchronized state is set up as part of an initial connection process, so TCP can be regarded as a connection-oriented protocol. Much of the protocol design is intended to ensure that each local state transition is communicated to, and acknowledged by, the remote party.

Reference: http://en.wikibooks.org/wiki/Communication_Networks/TCP_and_UDP_Protocols

New Questions 19

Refer to the exhibit.

Which two statements are correct? (Choose two.)

A. This is a default route.

B. Adding the subnet mask is optional for the ip route command.

C. This will allow any host on the 172.16.1.0 network to reach all known destinations beyond RouterA.

D. This command is incorrect, it needs to specify the interface, such as s0/0/0 rather than an IP address.

E. The same command needs to be entered on RouterA so that hosts on the 172.16.1.0 network can reach network 10.0.0.0.

Answer: A,C

Explanation:

This is obviously the default route which is set between the routers and since it is entered in such a manner that it ensures connectivity between the stub network and any host lying beyond RouterA.

New Questions 20

Refer to the exhibit.

Which option describes how SwitchA will handle the frame just received?

A. It will drop the frame.

B. It will forward the frame out of port Fa0/3 only.

C. It will flood the frame out all ports.

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

Answer: D

New Questions 21

Which protocol uses a connection-oriented service to deliver files between end systems?

A. TFTP

B. DNS

C. FTP

D. SNMP

E. RIP

Answer: C

Explanation:

TCP is an example of a connection-oriented protocol. It requires a logical connection to be

established between the two processes before data is exchanged. The connection must be maintained during the entire time that communication is taking place, then released afterwards. The process is much like a telephone call, where a virtual circuit is established-

-the caller must know the person's telephone number and the phone must be answered-- before the message can be delivered.

TCP/IP is also a connection-oriented transport with orderly release. With orderly release, any data remaining in the buffer is sent before the connection is terminated. The release is accomplished in a three-way handshake between client and server processes. The connection-oriented protocols in the OSI protocol suite, on the other hand, do not support orderly release. Applications perform any handshake necessary for ensuring orderly release.

Examples of services that use connection-oriented transport services are telnet, rlogin, and ftp.

New Questions 22

Refer to the exhibit.

As packets travel from Mary to Robert, which three devices will use the destination MAC address of the packet to determine a forwarding path? (Choose three.)

A. Hub1

B. Switch1

C. Router1

D. Switch2

E. Router2

F. Switch3

Answer: B,D,F

Explanation:

Switches use the destination MAC address information for forwarding traffic, while routers use the destination IP address information.

Local Area Networks employ Layer 2 Switches and Bridges to forward and filter network traffic. Switches and Bridges operate at the Data Link Layer of the Open System Interconnect Model (OSI). Since Switches and Bridges operate at the Layer 2 they operate more intelligently than hubs, which work at Layer 1 (Physical Layer) of the OSI. Because the switches and bridges are able to listen to the traffic on the wire to examine the source and destination MAC address. Being able to listen to the traffic also allows the switches and bridges to compile a MAC address table to better filter and forward network traffic.

To accomplish the above functions switches and bridges carry out the following tasks: MAC address learning by a switch or a bridge is accomplished by the same method. The switch or bridge listens to each device connected to each of its ports and scan the incoming frame for the source MAC address. This creates a MAC address to port map that is cataloged in the switches/bridge MAC database. Another name for the MAC address table is content addressable memory or CAM table.

When a switch or bridge is listening to the network traffic, it receives each frame and compares it to the MAC address table. By checking the MAC table the switch/ bridge are able o determine which port the frame came in on. If the frame is on the MAC table the frame is filtered or transmitted on only that port. If the switch determines that the frame is not on the MAC table, the frame is forwarded out to all ports except the incoming port.

New Questions 23

Which two of these functions do routers perform on packets? (Choose two.)

A. Examine the Layer 2 headers of inbound packets and use that information to determine the next hops for the packets

B. Update the Layer 2 headers of outbound packets with the MAC addresses of the next hops

C. Examine the Layer 3 headers of inbound packets and use that information to determine the next hops for the packets

D. Examine the Layer 3 headers of inbound packets and use that information to determine the complete paths along which the packets will be routed to their ultimate destinations

E. Update the Layer 3 headers of outbound packets so that the packets are properly directed to valid next hops

F. Update the Layer 3 headers of outbound packets so that the packets are properly directed to their ultimate destinations

Answer: B,C

Explanation:

This is the basic function of the router to receive incoming packets and then forward them to their required destination. This is done by reading layer 3 headers of inbound packets and update the info to layer 2 for further hopping.

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