[Free] 2017(July) EnsurePass Examcollection Cisco 200-125 Dumps with VCE and PDF 91-100

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CCNA Cisco Certified Network Associate CCNA (v3.0)

Question No: 91 – (Topic 3)

Refer to the graphic.

image

A static route to the 10.5.6.0/24 network is to be configured on the HFD router. Which commands will accomplish this? (Choose two.)

A. HFD(config)# ip route 10.5.6.0 0.0.0.255 fa0/0

B. HFD(config)# ip route 10.5.6.0 0.0.0.255 10.5.4.6

C. HFD(config)# ip route 10.5.6.0 255.255.255.0 fa0/0

D. HFD(config)# ip route 10.5.6.0 255.255.255.0 10.5.4.6

E. HFD(config)# ip route 10.5.4.6 0.0.0.255 10.5.6.0

F. HFD(config)# ip route 10.5.4.6 255.255.255.0 10.5.6.0

Answer: C,D Explanation:

The simple syntax of static route:

ip route destination-network-address subnet-mask {next-hop-IP-address | exit-interface}

destination-network-address: destination network address of the remote network

subnet mask: subnet mask of the destination network

next-hop-IP-address: the IP address of the receiving interface on the next-hop router

exit-interface: the local interface of this router where the packets will go out In the statement 鈥渋p route 10.5.6.0 255.255.255.0 fa0/0:

10.5.6.0 255.255.255.0: the destination network

fa0/0: the exit-interface

Question No: 92 – (Topic 3)

What are two enhancements that OSPFv3 supports over OSPFv2? (Choose two.)

  1. It requires the use of ARP.

  2. It can support multiple IPv6 subnets on a single link.

  3. It supports up to 2 instances of OSPFv3 over a common link.

  4. It routes over links rather than over networks.

Answer: B,D Explanation:

Here is a list of the differences between OSPFv2 and OSPFv3:

->They use different address families (OSPFv2 is for IPv4-only, OSPFv3 can be used for IPv6-only or both protocols

->OSPFv3 introduces new LSA types

->OSPFv3 has different packet format

->OSPFv3 uses different flooding scope bits (U/S2/S1)

->OSPFv3 adjacencies are formed over link-local IPv6 communications

->OSPFv3 runs per-link rather than per-subnet

->OSPFv3 supports multiple instances on a single link, Interfaces can have multiple IPv6 addresses

->OSPFv3 uses multicast addresses FF02::5 (all OSPF routers), FF02::6 (all OSPF DRs)

->OSPFv3 Neighbor Authentication done with IPsec (AH)

->OSPFv2 Router ID (RID) must be manually configured, still a 32-bit number

Reference: http://www.networkworld.com/article/2225270/cisco-subnet/ospfv3-for-ipv4-and- ipv6.html

Question No: 93 – (Topic 3)

Refer to the exhibit.

image

The Lakeside Company has the internetwork in the exhibit. The administrator would like to reduce the size of the routing table on the Central router. Which partial routing table entry in the Central router represents a route summary that represents the LANs in Phoenix but no additional subnets?

  1. 10.0.0.0/22 is subnetted, 1 subnets

    D 10.0.0.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1

  2. 10.0.0.0/28 is subnetted, 1 subnets

    D 10.2.0.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1

  3. 10.0.0.0/30 is subnetted, 1 subnets

    D 10.2.2.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1

  4. 10.0.0.0/22 is subnetted, 1 subnets

    D 10.4.0.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1

  5. 10.0.0.0/28 is subnetted, 1 subnets

    D 10.4.4.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1

  6. 10.0.0.0/30 is subnetted, 1 subnets

D 10.4.4.4 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1

Answer: D Explanation:

The 10.4.0.0/22 route includes 10.4.0.0/24, 10.4.1.0/24, 10.4.2.0/24 and 10.4.3.0/24 networks only.

Question No: 94 – (Topic 3)

Which characteristics are representatives of a link-state routing protocol? (Choose three.)

  1. provides common view of entire topology

  2. exchanges routing tables with neighbors

  3. calculates shortest path

  4. utilizes event-triggered updates

  5. utilizes frequent periodic updates

Answer: A,C,D Explanation:

Each of routers running link-state routing protocol learns paths to all the destinations in its 鈥渁rea鈥?so we can say although it is a bit unclear.

Link-state routing protocols generate routing updates only (not the whole routing table) when a change occurs in the network topology so

Link-state routing protocol like OSPF uses Dijkstra algorithm to calculate the shortest path –

gt;.

Unlike Distance vector routing protocol (which utilizes frequent periodic updates), link-state routing protocol utilizes event-triggered updates (only sends update when a change occurs)

-gt;.

Question No: 95 – (Topic 3)

Which parameter would you tune to affect the selection of a static route as a backup, when a dynamic protocol is also being used?

  1. hop count

  2. administrative distance

  3. link bandwidth

  4. link delay

  5. link cost

Answer: B

Explanation:

By default the administrative distance of a static route is 1, meaning it will be preferred over all dynamic routing protocols. If you want to have the dynamic routing protocol used and have the static route be used only as a backup, you need to increase the AD of the static route so that it is higher than the dynamic routing protocol.

Question No: 96 – (Topic 3)

Which parameter or parameters are used to calculate OSPF cost in Cisco routers?

  1. Bandwidth

  2. Bandwidth and Delay

  3. Bandwidth, Delay, and MTU

  4. Bandwidth, MTU, Reliability, Delay, and Load

Answer: A Explanation:

The well-known formula to calculate OSPF cost is Cost = 108 / Bandwidth

Question No: 97 – (Topic 3)

On a corporate network, hosts on the same VLAN can communicate with each other, but they are unable to communicate with hosts on different VLANs. What is needed to allow communication between the VLANs?

  1. a router with subinterfaces configured on the physical interface that is connected to the switch

  2. a router with an IP address on the physical interface connected to the switch

  3. a switch with an access link that is configured between the switches

  4. a switch with a trunk link that is configured between the switches

Answer: A Explanation:

Different VLANs can#39;t communicate with each other, they can communicate with the help of Layer3 router. Hence, it is needed to connect a router to a switch, then make the sub- interface on the router to connect to the switch, establishing Trunking links to achieve communications of devices which belong to different VLANs.

When using VLANs in networks that have multiple interconnected switches, you need to use VLAN trunking between the switches. With VLAN trunking, the switches tag each frame sent between switches so that the receiving switch knows to what VLAN the frame belongs. End user devices connect to switch ports that provide simple connectivity to a single VLAN each. The attached devices are unaware of any VLAN structure.

By default, only hosts that are members of the same VLAN can communicate. To change this and allow inter-VLAN communication, you need a router or a layer 3 switch.

Here is the example of configuring the router for inter-vlan communication RouterA(config)#int f0/0.1

RouterA(config-subif)#encapsulation ? dot1Q IEEE 802.1Q Virtual LAN

RouterA(config-subif)#encapsulation dot1Q or isl VLAN ID RouterA(config-subif)# ip address x.x.x.x y.y.y.y

Question No: 98 – (Topic 3)

Refer to the exhibit.

image

The speed of all serial links is E1 and the speed of all Ethernet links is 100 Mb/s. A static route will be established on the Manchester router to direct traffic toward the Internet over the most direct path available. What configuration on the Manchester router will establish a route toward the Internet for traffic that originates from workstations on the Manchester LAN?

A. ip route 0.0.0.0 255.255.255.0 172.16.100.2

B. ip route 0.0.0.0 0.0.0.0 128.107.1.1

C. ip route 0.0.0.0 255.255.255.252 128.107.1.1

D. ip route 0.0.0.0 0.0.0.0 172.16.100.1

E. ip route 0.0.0.0 0.0.0.0 172.16.100.2

F. ip route 0.0.0.0 255.255.255.255 172.16.100.2

Answer: E Explanation:

We use default routing to send packets with a remote destination network not in the routing table to the next-hop router. You should generally only use default routing on stub networks-those with only one exit path out of the network.

According to exhibit, all traffic towards Internet that originates from workstations should forward to Router R1.

Syntax for default route is:

ip route lt;Remote_Networkgt; lt;Netmaskgt; lt;Next_Hop_Addressgt;.

Question No: 99 – (Topic 3)

What is a global command?

  1. a command that is set once and affects the entire router

  2. a command that is implemented in all foreign and domestic IOS versions

  3. a command that is universal in application and supports all protocols

  4. a command that is available in every release of IOS, regardless of the version or deployment status

  5. a command that can be entered in any configuration mode

Answer: A Explanation:

When you enter global configuration mode and enter a command, it is applied to the running configuration file that is currently running in ram. The configuration of a global command affects the entire router. An example of a global command is one used for the hostname of the router.

Question No: 100 – (Topic 3)

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

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

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

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

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

Answer: B 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#39;t matter. The numbers you can use are from 1 to 65,535. Don#39;t get this confused with area numbers, which can be from 0 to 4.2 billion.

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