Exam Code: ccent ccna icnd1 100 105 pdf (Practice Exam Latest Test Questions VCE PDF)
Exam Name: Cisco Interconnecting Cisco Networking Devices Part 1 (ICND1 v3.0)
Certification Provider: Cisco
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Q21. DRAG DROP - (Topic 5) 

Drag the appropriate command on the left to the configuration task it accomplishes. (Not all options are used.) 

Answer: 


Q22. - (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). 


Q23. - (Topic 3) 

The network manager has requested a 300-workstation expansion of the network. The workstations are to be installed in a single broadcast domain, but each workstation must have its own collision domain. The expansion is to be as cost-effective as possible while still meeting the requirements. 

Which three items will adequately fulfill the request? (Choose three). 

A. One IP subnet with a mask of 255.255.254.0 

B. Two IP subnets with a mask of 255.255.255.0 

C. Seven 48-port hubs 

D. Seven 48-port switches 

E. One router interface 

F. Seven router interfaces 

Answer: A,D,E 

Explanation: 

To support 300 workstations in a single broadcast domain, we need to use a subnet mask 

which supports 512 hosts = 29-> /23 or 255.255.254.0 in decimal form -> A is correct. 

If we use 48-port switches we need 300/48 = 6.25 -> seven 48-port switches are enough 

because we also need trunking between them -> D is correct. 

We only need one router interface and it is connected with one of seven switches -> E is 

correct. 


Q24. - (Topic 5) 

Refer to the exhibit. 

Why was this message received? 

A. No VTY password has been set. 

B. No enable password has been set. 

C. No console password has been set. 

D. No enable secret password has been set. 

E. The login command has not been set on CON 0 

F. The login command has not been set on the VTY ports. 

Answer:

Explanation: 

Your CCNA certification exam is likely going to contain questions about Telnet, an application-level protocol that allows remote communication between two networking devices. With Telnet use being as common as it is, you had better know the details of how to configure it in order to pass your CCNA exam and to work in real-world networks. 

The basic concept is pretty simple - we want to configure R1, but we're at R2. If we telnet successfully to R1, we will be able to configure R1 if we've been given the proper permission levels. In this CCNA case study, R2 has an IP address of 172.12.123.2 and R1 an address of 172.12.123.1. Let's try to telnet from R2 to R1. 

R2#telnet 172.12.123.1 Trying 172.12.123.1 ... Open Password required, but none set [Connection to 172.12.123.1 closed by foreign host] 

This seems like a problem, but it's a problem we're happy to have. A Cisco router will not let any user telnet to it by default. That's a good thing, because we don't want just anyone connecting to our router! The "password required" message means that no password has been set on the VTY lines on R1. Let's do so now. 

R1(config)#line vty 0 4 

R1(config-line)#password baseball 

A password of "baseball" has been set on the VTY lines, so we shouldn't have any trouble using Telnet to get from R2 to R1. Let's try that now. 

R2#telnet 172.12.123.1 

Trying 172.12.123.1 ... Open 

User Access Verification 

Password: 

R1> 

We're in, and placed into user exec mode. 

Reference: 

http://www.mcmcse.com/cisco/guides/telnet_passwords_and_privilege_levels.shtml 


Q25. - (Topic 1) 

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:


Q26. - (Topic 3) 

Which IP address is a private address? 

A. 12.0.0.1 

B. 168.172.19.39 

C. 172.20.14.36 

D. 172.33.194.30 

E. 192.169.42.34 

Answer:


Q27. - (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:


Q28. - (Topic 1) 

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. 

Answer: A,B,E 

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. 


Q29. - (Topic 1) 

Refer to the exhibit. 

The host in Kiev sends a request for an HTML document to the server in Minsk. What will be the source IP address of the packet as it leaves the Kiev router? 

A. 10.1.0.1 

B. 10.1.0.5 

C. 10.1.0.6 

D. 10.1.0.14 

E. 10.1.1.16 

F. 10.1.2.8 

Answer:

Explanation: 

Although the source and destination MAC address will change as a packet traverses a network, the source and destination IP address will not unless network address translation (NAT) is being done, which is not the case here. 


Q30. - (Topic 3) 

What are two benefits of using a single OSPF area network design? (Choose two.) 

A. It is less CPU intensive for routers in the single area. 

B. It reduces the types of LSAs that are generated. 

C. It removes the need for virtual links. 

D. It increases LSA response times. 

E. It reduces the number of required OSPF neighbor adjacencies. 

Answer: B,C 

Explanation: 

OSPF uses a LSDB (link state database) and fills this with LSAs (link state advertisement). The link types are as follows: 

. LSA Type 1: Router LSA 

....... 

LSA Type 2: Network LSA 

LSA Type 3: Summary LSA 

LSA Type 4: Summary ASBR LSA 

LSA Type 5: Autonomous system external LSA 

LSA Type 6: Multicast OSPF LSA 

LSA Type 7: Not-so-stubby area LSA 

LSA Type 8: External attribute LSA for BGP 

If all routers are in the same area, then many of these LSA types (Summary ASBR LSA, external LSA, etc) will not be used and will not be generated by any router. 

All areas in an Open Shortest Path First (OSPF) autonomous system must be physically connected to the backbone area (Area 0). In some cases, where this is not possible, you can use a virtual link to connect to the backbone through a non-backbone area. You can also use virtual links to connect two parts of a partitioned backbone through a non-backbone area. The area through which you configure the virtual link, known as a transit area, must have full routing information. The transit area cannot be a stub area. Virtual links are not ideal and should really only be used for temporary network solutions or migrations. However, if all locations are in a single OSPF area this is not needed.