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Q121. – (Topic 5) 

Select three options which are security issues with the current configuration of SwitchA. (Choose three.) 

A. Privilege mode is protected with an unencrypted password 

B. Inappropriate wording in banner message 

C. Virtual terminal lines are protected only by a password requirement 

D. Both the username and password are weak 

E. Telnet connections can be used to remotely manage the switch 

F. Cisco user will be granted privilege level 15 by default 

Answer: A,B,D 

Q122. DRAG DROP – (Topic 1) 

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.) 

Answer: 

Q123. – (Topic 4) 

What does the "Inside Global" address represent in the configuration of NAT? 

A. the summarized address for all of the internal subnetted addresses 

B. the MAC address of the router used by inside hosts to connect to the Internet 

C. a globally unique, private IP address assigned to a host on the inside network 

D. a registered address that represents an inside host to an outside network 

Answer:

Explanation: 

NAT: Local and Global Definitions http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094837. shtml Cisco defines these terms as: Inside local address—The IP address assigned to a host on the inside network. This is the address configured as a parameter of the computer OS or received via dynamic address allocation protocols such as DHCP. The address is likely not a legitimate IP address assigned by the Network Information Center (NIC) or service provider. Inside global address—A legitimate IP address assigned by the NIC or service provider that represents one or more inside local IP addresses to the outside world. Outside local address—The IP address of an outside host as it appears to the inside network. Not necessarily a legitimate address, it is allocated from an address space routable on the inside. Outside global address—The IP address assigned to a host on the outside network by the host owner. The address is allocated from a globally routable address or network space. These definitions still leave a lot to be interpreted. For this example, this document redefines these terms by first defining local address and global address. Keep in mind that the terms inside and outside are NAT definitions. Interfaces on a NAT router are defined as inside or outside with the NAT configuration commands, ip nat inside destination and ip nat outside source . Networks to which these interfaces connect can then be thought of as inside networks or outside networks, respectively. Local address—A local address is any address that appears on the inside portion of the network. Global address—A global address is any address that appears on the outside portion of the network. 

Q124. – (Topic 5) 

Which two of the following are true regarding the configuration of RouterA? (Choose two.) 

A. At least 5 simultaneous remote connections are possible 

B. Only telnet protocol connections to RouterA are supported C. Remote connections to RouterA using telnet will succeed 

D. Console line connections will nevertime out due to inactivity 

E. Since DHCP is not used on Fa0/1 there is not a need to use the NAT protocol 

Answer: A,C 

Q125. – (Topic 3) 

Refer to the exhibit. 

Why are two OSPF designated routers identified on Core-Router? 

A. Core-Router is connected to more than one multi-access network. 

B. The router at 208.149.23.130 is a secondary DR in case the primary fails. 

C. Two router IDs have the same OSPF priority and are therefore tied for DR election 

D. The DR election is still underway and there are two contenders for the role. 

Answer:

Explanation: 

OSPF elects one DR per multi-access network. In the exhibit there are two DR so there must have more than one multi-access network. 

Q126. – (Topic 1) 

Which OSI layer header contains the address of a destination host that is on another network? 

A. application 

B. session 

C. transport 

D. network 

E. data link 

F. physical 

Answer:

Explanation: 

Only network address contains this information. To transmit the packets the sender uses network address and datalink address. But the layer 2 address represents just the address of the next hop device on the way to the sender. It is changed on each hop. Network address remains the same. 

Q127. – (Topic 3) 

Which statements are TRUE regarding Internet Protocol version 6 (IPv6) addresses? (Choose three.) 

A. An IPv6 address is divided into eight 16-bit groups. 

B. A double colon (::) can only be used once in a single IPv6 address. 

C. IPv6 addresses are 196 bits in length. 

D. Leading zeros cannot be omitted in an IPv6 address. 

E. Groups with a value of 0 can be represented with a single 0 in IPv6 address. 

Answer: A,B,E 

Explanation: 

IPv6 addresses are divided into eight 16-bit groups, a double colon (::) can only be used 

once in an IPv6 address, and groups with a value of 0 can be represented with a single 0 in 

an IPv6 address. 

The following statements are also true regarding IPv6 address: 

IPv6 addresses are 128 bits in length. 

Eight 16-bit groups are divided by a colon (:). 

Multiple groups of 16-bit 0s can be represented with double colon (::). 

Double colons (::) represent only 0s. 

Leading zeros can be omitted in an IPv6 address. 

The option stating that IPv6 addresses are 196 bits in length is incorrect. IPv6 addresses 

are 128 bits in length. 

The option stating that leading zeros cannot be omitted in an IPv6 address is incorrect. 

Leading zeros can be omitted in an IPv6 address. 

Q128. – (Topic 3) 

What command sequence will configure a router to run OSPF and add network 10.1.1.0 /24 to area 0? 

A. router ospf area 0 network 10.1.1.0 255.255.255.0 area 0 

B. router ospf network 10.1.1.0 0.0.0.255 

C. router ospf 1 network 10.1.1.0 0.0.0.255 area 0 

D. router ospf area 0 network 10.1.1.0 0.0.0.255 area 0 

E. router ospf network 10.1.1.0 255.255.255.0 area 0 F. router ospf 1 network 10.1.1.0 0.0.0.255 

Answer:

Explanation: 

Enabling OSPFSUMMARY STEPS 

1. 

enable 

2. 

configure terminal 

3. 

router ospf process-id 

4. 

network ip-address wildcard-mask area area-id 

5. 

end 

DETAILED STEPS 

Command or Action Purpose Step.1 enable 

Example: 

Device> enable Enables privileged EXEC mode. . Enter your password if prompted. 

Step.2 configure terminal 

Example: 

Device# configure terminal Enters global configuration mode. 

Step.3 router ospf process-id 

Example: 

Device(config)# router ospf 109 

Enables OSPF routing and enters router configuration mode. 

Step.4 network ip-address wildcard-mask area area-id 

Example: 

Device(config-router)# network 192.168.129.16 0.0.0.3 area 0 

Defines an interface on which OSPF runs and defines the area ID for that interface. 

Step.5 end 

Example: 

Device(config-router)# end 

Exits router configuration mode and returns to privileged EXEC mode. 

Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/12-4t/iro-12-4t-book/iro-cfg.html#GUID-588D1301-F63C-4DAC-BF1C-C3735EB13673 

Q129. – (Topic 2) 

What does a host on an Ethernet network do when it is creating a frame and it does not have the destination address? 

A. Drops the frame 

B. Sends out a Layer 3 broadcast message 

C. Sends a message to the router requesting the address 

D. Sends out an ARP request with the destination IP address 

Answer:

Explanation: 

In this case, it will send out an ARP request for MAC address of the destination IP (assuming it doesn't already have it in its table) and then address it to the destination's MAC address. 

Q130. – (Topic 1) 

Which statements accurately describe CDP? (Choose three.) 

A. CDP is an IEEE standard protocol. 

B. CDP is a Cisco proprietary protocol. 

C. CDP is a datalink layer protocol. 

D. CDP is a network layer protocol. 

E. CDP can discover directly connected neighboring Cisco devices. 

F. CDP can discover Cisco devices that are not directly connected. 

Answer: B,C,E 

Explanation: 

CDP (Cisco Discovery Protocol) is a proprietary protocol designed by Cisco to help administrators collect information about both locally attached and remote devices. By using CDP, you can gather hardware and protocol information about neighbor devices containing useful info for troubleshooting and documenting the network. 

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