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Q131. - (Topic 1) 

Refer to the exhibit. 

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

A. broadcast domains 

B. repeater domains 

C. Ethernet collisions 

D. signal amplification 

E. Ethernet broadcasts 

Answer:

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. 


Q132. - (Topic 7) 

Two hosts are attached to a switch with the default configuration. Which statement about the configuration is true? 

A. IP routing must be enabled to allow the two hosts to communicate. 

B. The two hosts are in the same broadcast domain. 

C. The switch must be configured with a VLAN to allow the two hosts to communicate. 

D. Port security prevents the hosts from connecting to the switch. 

Answer:

Explanation: IP routing must be enables to allow the two hosts to communicate with each other with default configuration. http://www.cisco.com/c/en/us/support/docs/lan-switching/inter-vlan-routing/41860-howto-L3-intervlanrouting.html 


Q133. - (Topic 3) 

On a live network, which commands will verify the operational status of router interfaces? (Choose two.) 

A. Router# show interfaces 

B. Router# show ip protocols 

C. Router# debug interface 

D. Router# show ip interface brief 

E. Router# show start 

Answer: A,D 

Explanation: 

Only two commands “show interfaces” and “show ip interface brief” reveal the status of router interfaces (up/up, for example). 


Q134. - (Topic 1) 

Refer to the exhibit. 

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

A. It will drop the frame. 

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

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

D. It will flood the frame out all ports. 

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

Answer:

Explanation: 

When frame receives the frame, it checks the source address on MAC table if MAC address found in MAC table it tries to forward if not in MAC table adds the Address on MAC table. After checking the source address, it checks the destination address on MAC table, if MAC address found on MAC table it forwards to proper ports otherwise floods on all ports except the source port. 


Q135. - (Topic 5) 

Select two options which are security Issues which need to be modified before RouterA is used? (Choose two.) 

A. unencrypted weak password is configured to protect privilege mode 

B. inappropriate wording in banner message 

C. the virtual terminal lines have a weak password configured 

D. virtual terminal lines have a password, but it will not be used 

E. configuration supports un-secure web server access 

Answer: B,D 


Updated 100-105 download:

Q136. - (Topic 1) 

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.) 

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. 

Answer: A,D,E 

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. 


Q137. - (Topic 3) 

Refer to the exhibit. 

If the resume command is entered after the sequence that is shown in the exhibit, which router prompt will be displayed? 

A. Router1> 

B. Router1# 

C. Router2> 

D. Router2# 

Answer:

Explanation: 

After resuming the telnet session by using the Enter key after it has been suspended, it will resume back to the telnet session so it will be back to the router2> prompt. 


Q138. - (Topic 1) 

Which two characteristics apply to Layer 2 switches? (Choose two.) 

A. Increases the number of collision domains 

B. Decreases the number of collision domains 

C. Implements VLAN 

D. Decreases the number of broadcast domains 

E. Uses the IP address to make decisions for forwarding data packets 

Answer: A,C 

Explanation: 

Layer 2 switches offer a number of benefits to hubs, such as the use of VLANs and each switch port is in its own separate collision domain, thus eliminating collisions on the segment. 


Q139. - (Topic 5) 

Refer to the exhibit. 

Serial 0/0 does not respond to a ping request from a host on the FastEthernet 0/0 LAN. How can this problem be corrected? 

A. Enable the Serial 0/0 interface. 

B. Correct the IP address for Serial 0/0. 

C. Correct the IP address for FastEthernet 0/0 

D. Change the encapsulation type on Serial 0/0 

E. Enable autoconfiguration on the Serial 0/0 interface 

Answer:

Explanation: 

Serial 0/0 interface is administratively down therefore, you will have to run the "no shutdown" command to enable the interface for data. 


Q140. - (Topic 3) 

Refer to the exhibit. 

Given the output for this command, if the router ID has not been manually set, what router ID will OSPF use for this router? 

A. 10.1.1.2 

B. 10.154.154.1 

C. 172.16.5.1 

D. 192.168.5.3 

Answer:

Explanation: 

The highest IP address of all loopback interfaces will be chosen -> Loopback 0 will be chosen as the router ID.