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New Cisco 100-105 Exam Dumps Collection (Question 4 - Question 13)

Q1. After you configure a default route to the Internet on a router, the route is missing from the routing table. Which option describes a possible reason for the problem?

A. The next-hop address is unreachable.

B. The default route was configured on a passive interface.

C. Dynamic routing is disabled.

D. Cisco Discovery Protocol is disabled on the interface used to reach the next hop.

Answer: A

Q2. What is the maximum number of bits that can be borrowed to create subnets if a Class B network address is being used?

A. 2

B. 6

C. 8

D. 14

E. 16

Answer: D

Q3. Which destination IP address can a host use to send one message to multiple devices across different subnets?

A. 172.20.1.0

B. 127.0.0.1

C. 192.168.0.119

D. 239.255.0.1

Answer: D

Explanation: Multicast is a networking protocol where one host can send a message to a special multicast IP address and one or more network devices can listen for and receive

those messages.

Multicast works by taking advantage of the existing IPv4 networking infrastructure, and it does so in something of a weird fashion. As you read, keep in mind that things are a little confusing because multicast was "shoe-horned" in to an existing technology.

For the rest of this article, let's use the multicast IP address of 239.255.0.1. We'll not worry about port numbers yet, but make a mental note that they are used in multicast. We'll discuss that later.

Q4. Which NTP command configures the local device as an NTP reference clock source?

A. ntp peer

B. ntp broadcast

C. ntp master

D. ntp server

Answer: D

Q5. Which NTP concept indicates the distance between a device and the reliable time source?

A. clock offset

B. stratum

C. reference

D. dispersion

Answer: B

Q6. What is the default administrative distance of OSPF?

A. 90

B. 100

C. 110

D. 120

Answer: C

Explanation: Explanation

The Administrative Distances (AD) of popular routing protocols are listed below:

After the show ip route command has been entered, the following routes are displayed. Which route will not be entered into the routing table of a neighboring router?

A. R 192.168.8.0/24 [120/1] via 192.168.2.2, 00:00:10, Serial0

B. R 192.168.11.0/24 [120/7] via 192.168.9.1, 00:00:03, Serial1

C. C 192.168.1.0/24 is directly connected, Ethernet0

D. R 192.168.5.0/24 [120/15] via 192.168.2.2, 00:00:10, Serial0

Answer: D

Explanation

The route 192.168.5.0/24 currently has the metric of 15 so this router will add 1 hop count before sending out to its neighboring router. With RIP, a metric of 16 means that network is down -> it will not be installed in the routing table of the neighboring router.

Q7. You have configured the host computers on a campus LAN to receive their DHCP addresses form the local router to be able to browse their corporate site. Which statement about the network environment is true?

A. It supports a DNS server for use by DHCP clients.

B. Two host computers may be assigned the same IP address.

C. The DNS server must be configured manually on each host.

D. The domain name must be configured locally on each host computer.

Answer: A

Explanation: The local router in this case is called a DHCP server. The main purpose of a DHCP server is to assign IP addresses to the clients. Besides that, a DHCP server can also specify the IP address of the DNS server and specify the domain name for the clients. For more information about configuring a DHCP server, please read: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_dhcp/configuration/12-4t/dhcp-12-4t-book/config-dhcp-server.html

Q8. The internetwork shown in the diagram is experiencing network connectivity problems.

What is the cause of the problem?

A. The cabling connecting host A to Switch3 is too long.

B. The address of host B is a broadcast address.

C. The IP address of interface Fa0/0 of Router1 is not a usable address.

D. The cable connecting Switch2 and Switch3 should be a crossover.

E. The IP address of Server 1 is in the wrong subnet.

Answer: D

Q9. Scenario:

You are a junior network engineer for a financial company, and the main office network is experiencing network issues. Troubleshoot the network issues.

Router R1 connects the main office to the internet, and routers R2 and R3 are internal routers.

NAT is enabled on router R1.

The routing protocol that is enabled between routers R1, R2 and R3 is RIPv2.

R1 sends the default route into RIPv2 for the internal routers to forward internet traffic to R1.

You have console access on R1, R2 and R3 devices. Use only show commands to troubleshoot the issues.

Examine the DHCP configuration between R2 and R3; R2 is configured as the DHCP server and R3 as the client. What is the reason R3 is not receiving the IP address via DHCP?

A. On R2. The network statement In the DHCP pool configuration is incorrectly configured.

B. On R3. DHCP is not enabled on the interface that is connected to R2.

C. On R2, the interface that is connected to R3 is in shutdown condition.

D. On R3, the interface that is connected to R2 is in shutdown condition.

Answer: B

Explanation:

Please check the below:

Q10. Which subnet address is for the IP address 172.19.20.23/28?

A. 172.19.20.20

B. 172.19.20.0

C. 172.19.20.32

D. 172.19.20.15

E. 172.19.20.16

Answer: E

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