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21 Cards in this Set
- Front
- Back
In an IPv4 enviorment, what information is use by the router to forward data packets from one interface of a router to another? |
destination network address |
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what information is added during encapsulation at OSI layer 3? |
Source and Destination IP address. |
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In a connectionless system, which of the following is correct? |
The destination is not contacted before a packet is sent. |
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Which IP packet field will prevent endless loops? |
time - to - live
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Which portion of the network layer address does a router use to forward packets? |
network portion |
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Using the network in the exhibit, what would be the default gateway address for host A in the 192.133.219.0 network? |
192.133.219.1 |
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If the default gateway is configured incorrectly on the host, what is the impact on the communications? |
The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks. |
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What is the purpose of default gateway? |
Identifies the device that allows local network computers to communicate with devices on other networks |
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What type of routing uses information that is manually entered into the routing table? |
static |
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when the destination network is not listed in the routing table of a Cisco router, what are two possible actions that the router might take? (two answers) |
The router discards the packet
The router forwards the packet out the interface indicated by the default route entry. |
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What are the key factors to consider when grouping hosts into a common network? (three answer) |
Purpose
Geographic location
Ownership
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What is a component of a outing table entry? |
the next-hop address |
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which intermediary devices could be used to implant security between networks? (two answers) |
Router
Firewalll |
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What are three common problems with large network? (three answers) |
Perfromance degradation
Security issues
Host identification |
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All deices shown in the ehcibit have factory default settings. How many broadcast domains are represented in topology that is? |
4 |
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Which three statements are true about routes and their use (three answer) |
If the destination network is directly connected, the router forwards the packet to the destination host.
If not route exists for the destination network and a default route is present, the packet forward ed ti the next- hop router.
If the originating host has a default gateway configured, the packet for a remote network can be forwarded using that route. |
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A network adminstartor is troubleshooting a connectivity problem and needs to determine the address that is used to forward network packets out the network, Using the nest-r command, the administrator would identify which address as the address to which all hosts send packets that are destined for and outside network? |
10.10.10.6 |
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A network adminstrator notices that there are too many broadcasts on the network. What two steps can the network administrator take to resolve this problems? (two answers) |
Replace S2 with a router.
Subnet the 192.168.0.0/24 |
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The network in the exhibit is fully operational. What two statements correctly describe the routing for the topology that is shown? ( two answers) |
192.168.0.2 is next-hop address that is used by R3 to route a packet from the 10.0.0.0 network to the 172.16.0.0 network. |
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What two characteristic are commonly associated with dynamic routing protocols? (two answers) |
provide routers with up- to- date routing table
consume bandwith to exchange route information |
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What statement describes the purpose of a default route? |
A host yes a default route to transfer data to a host outside the local network when no other router to the destination exists. |