Super to 100 105 icnd1 v3 0

Exam Code: 105 100 (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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Q71. – (Topic 7) 

Which option is a valid hostname for a switch? 

A. Switch-Cisco 

B. Switch-Cisco! 

C. SwitchCisco 

D. SwitchCisc0 

Answer:

Q72. – (Topic 4) 

A network administrator cannot connect to a remote router by using SSH. Part of the show interfaces command is shown. 

router#show interfaces 

Serial0/1/0 is up, line protocol is down 

At which OSI layer should the administrator begin troubleshooting? 

A. physical 

B. data link 

C. network 

D. transport 

Answer:

Explanation: 

https://learningnetwork.cisco.com/thread/12389 

I think the indication here is "Serial 0 is up, line protocol is down". What causes this indication? Correct me if I am wrong. When you have this indication, a cable unplugged is not a correct answer. If you check the output of your "show interface serial 0" command again, you should notice it as "Serial 0 is down, line protocol is down. Under the "show ip int brief" you should see status = down and protocol = down as opposed to up, down. Because you disconnected the cable, layer 1 will go down, which is indicated by the serial 0 down status. The line protocol status is for layer 2. So, a cable unplugged is not a correct answer to "Serial 0 is up, line protocol is down". Up/down means that the physical layer is OK, but there is a problem with the data link link (line protocol). 

Q73. – (Topic 3) 

Which command can you use to manually assign a static IPV6 address to a router interface? 

A. ipv6 address PREFIX_1::1/64 

B. ipv6 autoconfig 2001:db8:2222:7272::72/64 

C. ipv6 autoconfig 

D. ipv6 address 2001:db8:2222:7272::72/64 

Answer:

Explanation: 

An example of configuring IPv6 on an interface is shown below: Router(config)# interface fastethernet 0/1 Router(config-if)# ipv6 address 3000::2222:1/64 

Q74. – (Topic 2) 

Refer to the exhibit. 

How many collision domains are shown? 

A. one 

B. two 

C. three 

D. four 

E. six 

F. twelve 

Answer:

Explanation: 

Hubs create single collision and broadcast domains, so in this case there will be a single collision domain for each of the two hubs. 

Q75. – (Topic 3) 

What is the subnet address for the IP address 172.19.20.23/28? 

A. 172.19.20.0 

B. 172.19.20.15 

C. 172.19.20.16 

D. 172.19.20.20 

E. 172.19.20.32 

Answer:

Explanation: 

From the /28 we can get the following: 

Increment: 16 (/28 = 11111111.11111111.11111111.11110000) 

Network address: 172.19.20.16 (because 16 < 23) 

Broadcast address: 172.16.20.31 (because 31 = 16 + 16 – 1) 

Q76. – (Topic 3) 

Which statement describes the process ID that is used to run OSPF on a router? 

A. It is globally significant and is used to represent the AS number. 

B. It is locally significant and is used to identify an instance of the OSPF database. 

C. It is globally significant and is used to identify OSPF stub areas. 

D. It is locally significant and must be the same throughout an area. 

Answer:

Explanation: 

The Process ID for OSPF on a router is only locally significant and you can use the same number on each router, or each router can have a different number-it just doesn't matter. The numbers you can use are from 1 to 65,535. Don't get this confused with area numbers, which can be from 0 to 4.2 billion. 

Q77. – (Topic 3) 

Some routers have been configured with default routes. What are some of the advantages 

of using default routes? (Choose two) 

A. They establish routes that will never go down. 

B. They keep routing tables small. 

C. They require a great deal of CPU power. 

D. They allow connectivity to remote networks that are not in the routing table 

E. They direct traffic from the internet into corporate networks. 

Answer: B,D 

Explanation: 

Cisco administration 101: What you need to know about default routes Reference: 

http://www.techrepublic.com/article/cisco-administration-101-what-you-need-to-know-about-default-routes/ 

Q78. – (Topic 3) 

What is the default administrative distance of the OSPF routing protocol? 

A. 90 

B. 100 

C. 110 

D. 120 

E. 130 

F. 170 

Answer:

Explanation: 

Default Distance Value Table This table lists the administrative distance default values of the protocols that Cisco supports: If the administrative distance is 255, the router does not believe the source of that route and does not install the route in the routing table. 

Q79. – (Topic 3) 

To allow or prevent load balancing to network 172.16.3.0/24, which of the following commands could be used in R2? (Choose two.) 

A. R2(config-if)#clock rate 

B. R2(config-if)#bandwidth 

C. R2(config-if)#ip ospf cost 

D. R2(config-if)#ip ospf priority 

E. R2(config-router)#distance ospf 

Answer: B,C 

Explanation: 

http://www.cisco.com/en/US/tech/tk365/technologies_white_paper09186a0080094e9e.sht ml#t6 

The cost (also called metric) of an interface in OSPF is an indication of the overhead required to send packets across a certain interface. The cost of an interface is inversely proportional to the bandwidth of that interface. A higher bandwidth indicates a lower cost. There is more overhead (higher cost) and time delays involved in crossing a 56k serial line than crossing a 10M Ethernet line. The formula used to calculate the cost is: Cost = 10000 0000/bandwidth in bps For example, it will cost 10 EXP8/10 EXP7 = 10 to cross a 10M Ethernet line and will cost 10 EXP8/1544000 =64 to cross a T1 line. By default, the cost of an interface is calculated based on the bandwidth; you can force the cost of an interface with the ip ospf cost <value> interface subconfiguration mode command. 

Q80. – (Topic 2) 

Which two options will help to solve the problem of a network that is suffering a broadcast storm? (Choose two.) 

A. a bridge 

B. a router 

C. a hub 

D. a Layer 3 switch 

E. an access point 

Answer: B,D 

Explanation: 

Routers and layer 3 switches will not propagate broadcast traffic beyond the local segment, so the use of these devices is the best method for eliminating broadcast storms. 

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