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Q71. - (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.

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

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

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.

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.

Q72. - (Topic 3)

What is the subnet address of 172.16.159.159/22?

A. 172.16.0.0

B. 172.16.128.0

C. 172.16.156.0

D. 172.16.159.0

E. 172.16.159.128

F. 172.16.192.0

Explanation:

Converting to binary format it comes to 11111111.11111111.11111100.00000000 or

255.255.252.0 Starting with 172.16.0.0 and having increment of 4 we get.

Q73. - (Topic 5)

Refer to the exhibit.

An administrator replaced the 10/100 Mb NIC in a desktop PC with a 1 Gb NIC and now the PC will not connect to the network. The administrator began troubleshooting on the switch. Using the switch output shown, what is the cause of the problem?

A. Speed is set to 100Mb/s.

B. Input flow control is off.

C. Encapsulation is set to ARPA.

D. The port is administratively down.

E. The counters have never been cleared.

Explanation:

For PC to switch connectivity, the speed settings must match. In this case, the 1 Gb NIC will not be able to communicate with a 100Mb fast Ethernet interface, unless the 1Gb NIC can be configured to connect at 100Mb.

Q74. - (Topic 3)

Which of the following describe the process identifier that is used to run OSPF on a router? (Choose two)

A. It is locally significant.

B. It is globally significant.

C. It is needed to identify a unique instance of an OSPF database.

D. It is an optional parameter required only if multiple OSPF processes are running on the router.

E. All routers in the same OSPF area must have the same process ID if they are to exchange routing information.

Explanation:

https://learningnetwork.cisco.com/thread/6248 They are locally significant only, and have no bearing on the structure of any OSPF packet or LSA update. So you can have a separate process-id on every single router in your network if you so desire.

Q75. - (Topic 5)

Refer to the exhibit.

Host A can communicate with Host B but not with Hosts C or D. How can the network administrator solve this problem?

A. Configure Hosts C and D with IP addresses in the 192.168.2.0 network.

B. Install a router and configure a route to route between VLANs 2 and 3.

C. Install a second switch and put Hosts C and D on that switch while Hosts A and B remain on the original switch.

D. Enable the VLAN trunking protocol on the switch.

Explanation:

Two VLANs require a router in between otherwise they cannot communicate. Different VLANs and different IP subnets need a router to route between them.

Q76. - (Topic 7)

Which component of a routing table entry represents the subnet mask?

A. routing protocol code

B. prefix

C. metric

Explanation:

IP Routing Table Entry TypesAn entry in the IP routing table contains the following information in the order presented: Network ID. The network ID or destination corresponding to the route. The network ID can be class-based, subnet, or supernet network ID, or an IP address for a host route. Network Mask. The mask that is used to match a destination IP address to the network ID. Next Hop. The IP address of the next hop. Interface. An indication of which network interface is used to forward the IP packet. Metric. A number used to indicate the cost of the route so the best route among possible multiple routes to the same destination can be selected. A common use of the metric is to indicate the number of hops (routers crossed) to the network ID. Routing table entries can be used to store the following types of routes: Directly Attached Network IDs. Routes for network IDs that are directly attached. For directly attached networks, the Next Hop field can be blank or contain the IP address of the interface on that network. Remote Network IDs. Routes for network IDs that are not directly attached but are available across other routers. For remote networks, the Next Hop field is the IP address of a local router in between the forwarding node and the remote network. Host Routes. A route to a specific IP address. Host routes allow routing to occur on a per-IP address basis. For host routes, the network ID is the IP address of the specified host and the network mask is 255.255.255.255. Default Route. The default route is designed to be used when a more specific network ID or host route is not found. The default route network ID is 0.0.0.0 with the network mask of

0.0.0.0.

Q77. - (Topic 3)

What is the network address for the host with IP address 192.168.23.61/28?

A. 192.168.23.0

B. 192.168.23.32

C. 192.168.23.48

D. 192.168.23.56

E. 192.168.23.60

Explanation:

Convert bit-length prefix to quad-dotted decimal representation, then from it find the number of bits used for subnetting you can find previously calculated number of subnets by separating subnets each having value of last bit used for subnet masking Find that your IP address is in which subnet, that subnet's first address is network address and last address is broadcast address. Based on above steps the answer is option C

Q78. CORRECT TEXT - (Topic 6)

Topic 7, Mix Questions

Q79. - (Topic 3)

An administrator must assign static IP addresses to the servers in a network. For network 192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the last usable host address.

Which of the following should be entered into the IP properties box for the sales server?

Explanation:

With network 192.168.20.24/29 we have:

Increment: 8 (/29 = 255.255.255.248 = 11111000 for the last octet)

Network address: 192.168.20.24 (because 24 = 8 * 3)

Therefore the first usable IP address is 192.168.20.25 (assigned to the router) and the last usable IP address is 192.168.20.30 (assigned to the sales server). The IP address of the router is also the default gateway of the sales server.

Q80. - (Topic 3)

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