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100-105 Product Description:
Exam Number/Code: 100-105 vce
Exam name: Cisco Interconnecting Cisco Networking Devices Part 1 (ICND1 v3.0)
n questions with full explanations
Certification: Cisco Certification
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2017 Feb 100-105 practice exam

Q131. - (Topic 1) 

Refer to the exhibit. 

The exhibit is showing the topology and the MAC address table. Host A sends a data frame to host D. What will the switch do when it receives the frame from host A? 

A. The switch will add the source address and port to the MAC address table and forward the frame to host D. 

B. The switch will discard the frame and send an error message back to host A. 

C. The switch will flood the frame out of all ports except for port Fa0/3. 

D. The switch will add the destination address of the frame to the MAC address table and forward the frame to host D. 

Answer:

Explanation: 

When switch receives the data frame from the host not having the MAC address already on the MAC table, it will add the MAC address to source port on MAC address table and sends the data frame. 


Q132. - (Topic 4) 

What is the best practice when assigning IP addresses in a small office of six hosts? 

A. Use a DHCP server that is located at the headquarters. 

B. Use a DHCP server that is located at the branch office. 

C. Assign the addresses by using the local CDP protocol. 

D. Assign the addresses statically on each node. 

Answer:

Explanation: 

Its best to use static addressing scheme where the number of systems is manageable rather than using a dynamic method such as DHCP as it is easy to operate and manage. 


Q133. - (Topic 3) 

Refer to the exhibit. 

A network associate has configured OSPF with the command: 

City(config-router)# network 192.168.12.64 0.0.0.63 area 0 

After completing the configuration, the associate discovers that not all the interfaces are participating in OSPF. Which three of the interfaces shown in the exhibit will participate in OSPF according to this configuration statement? (Choose three.) 

A. FastEthernet0 /0 

B. FastEthernet0 /1 

C. Serial0/0 

D. Serial0/1.102 

E. Serial0/1.103 

F. Serial0/1.104 

Answer: B,C,D 

Explanation: 

The “network 192.168.12.64 0.0.0.63 equals to network 192.168.12.64/26. This network has: 

+

 Increment: 64 (/26= 1111 1111.1111 1111.1111 1111.1100 0000) 

+

 Network address: 192.168.12.64 

+

 Broadcast address: 192.168.12.127 

Therefore all interface in the range of this network will join OSPF. 


Q134. - (Topic 5) 

Refer to the exhibit. 

A technician pastes the configurations in the exhibit into the two new routers shown. Otherwise, the routers are configured with their default configurations. 

A ping from Host1 to Host 2 fails, but the technician is able to ping the S0/0 interface of R2 from Host 1. The configurations of the hosts have been verified as correct. What could be the cause of the problem? 

A. The serial cable on R1 needs to be replaced. 

B. The interfaces on R2 are not configured properly 

C. R1 has no route to the 192.168.1.128 network. 

D. The IP addressing scheme has overlapping subnetworks. 

E. The ip subnet-zero command must be configured on both routers. 

Answer:

Explanation: 

Without a static route pointing to the host 2 network the router R1 is unaware of the path to take to reach that network and reply traffic cannot be sent. 


Q135. - (Topic 7) 

Refer to the exhibit. 

Which statement describes the effect of this configuration? 

A. The VLAN 10 VTP configuration is displayed. 

B. VLAN 10 spanning-tree output is displayed. 

C. The VLAN 10 configuration is saved when the router exits VLAN configuration mode. 

D. VLAN 10 is added to the VLAN database. 

Answer:


Avant-garde 100-105 free download:

Q136. - (Topic 3) 

Which two statements describe the process identifier that is used in the command to configure OSPF on a router? (Choose two.) 

Router(config)# router ospf 1 

A. All OSPF routers in an area must have the same process ID. 

B. Only one process number can be used on the same router. 

C. Different process identifiers can be used to run multiple OSPF processes 

D. The process number can be any number from 1 to 65,535. 

E. Hello packets are sent to each neighbor to determine the processor identifier. 

Answer: C,D 

Explanation: 

Multiple OSPF processes can be configured on a router using multiple process ID’s. 

The valid process ID’s are shown below: Edge-B(config)#router ospf <1-65535> Process ID 


Q137. - (Topic 3) 

Which two of these statements are true of IPv6 address representation? (Choose two.) 

A. There are four types of IPv6 addresses: unicast, multicast, anycast, and broadcast. 

B. A single interface may be assigned multiple IPv6 addresses of any type. 

C. Every IPv6 interface contains at least one loopback address. 

D. The first 64 bits represent the dynamically created interface ID. 

E. Leading zeros in an IPv6 16 bit hexadecimal field are mandatory. 

Answer: B,C 

Explanation: 

A single interface may be assigned multiple addresses of any type (unicast, anycast, 

multicast). 

Every IPv6-enabled interface must contain at least one loopback and one link-local 

address. 

Optionally, every interface can have multiple unique local and global addresses. 

IPv6 host addresses can be assigned in multiple ways: 

Static configuration 

Stateless autoconfiguration 

DHCPv6 

When IPv6 is used over Ethernet networks, the Ethernet MAC address can be used to 

generate the 64-bit interface ID for the host. This is called the EUI-64 address. 

Since MAC addresses use 48 bits, additional bits must be inserted to fill the 64 bits 

required. 

Reference: 

http://www.cisco.com/en/US/technologies/tk648/tk872/technologies_white_paper0900aecd 

8026003d.pdf 


Q138. DRAG DROP - (Topic 4) 

Various protocols are listed on the left. On the right are applications for the use of those protocols. Drag the protocol on the left to an associated function for that protocol on the right. (Not all options are used.) 

Answer: 


Q139. - (Topic 3) 

Which statements describe the routing protocol OSPF? (Choose three.) 

A. It supports VLSM. 

B. It is used to route between autonomous systems. 

C. It confines network instability to one area of the network. 

D. It increases routing overhead on the network. 

E. It allows extensive control of routing updates. 

F. It is simpler to configure than RIP v2. 

Answer: A,C,E 

Explanation: 

Routing overhead is the amount of information needed to describe the changes in a dynamic network topology. All routers in an OSPF area have identical copies of the topology database and the topology database of one area is hidden from the rest of the areas to reduce routing overhead because fewer routing updates are sent and smaller routing trees are computed and maintained (allow extensive control of routing updates and confine network instability to one area of the network). 


Q140. - (Topic 1) 

Which layer of the TCP/IP stack combines the OSI model physical and data link layers? 

A. Internet layer 

B. transport layer 

C. application layer 

D. network access layer 

Answer:

Explanation: 

The Internet Protocol Suite, TCP/IP, is a suite of protocols used for communication over the internet. The TCP/ IP model was created after the OSI 7 layer model for two major reasons. First, the foundation of the Internet was built using the TCP/IP suite and through the spread of the World Wide Web and Internet, TCP/IP has been preferred. Second, a project researched by the Department of Defense (DOD) consisted of creating the TCP/IP protocols. The DOD's goal was to bring international standards which could not be met by the OSI model. Since the DOD was the largest software consumer and they preferred the TCP/IP suite, most vendors used this model rather than the OSI. Below is a side by side comparison of the TCP/IP and OSI models. 



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