READ Free Dumps For CISCO- 100-105
| Question ID 14540 | What information can be used by a router running a link-state protocol to build and maintain
its topological database? (Choose two.)
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| Option A | hello packets
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| Option B | SAP messages sent by other routers
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| Option C | LSAs from other routers
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| Option D | beacons received on point-to-point links
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| Option E | routing tables received from other link-state routers
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| Option F | TTL packets from designated routers
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| Correct Answer | A,C |
Explanation Explanation: Reference 1: http://www.ciscopress.com/articles/article.asp?p=24090&seqNum=4 Link state protocols, sometimes called shortest path first or distributed database protocols, are built around a well-known algorithm from graph theory, E. W. Dijkstra'a shortest path algorithm. Examples of link state routing protocols are: Open Shortest Path First (OSPF) for IP The ISO's Intermediate System to Intermediate System (IS-IS) for CLNS and IP DEC's DNA Phase V Novell's NetWare Link Services Protocol (NLSP) Although link state protocols are rightly considered more complex than distance vector protocols, the basic functionality is not complex at all: 1. Each router establishes a relationshipan adjacencywith each of its neighbors. 2. Each router sends link state advertisements (LSAs), some 3. Each router stores a copy of all the LSAs it has seen in a database. If all works well, the databases in all routers should be identical. 4. The completed topological database, also called the link state database, describes a graph of the internetwork. Using the Dijkstra algorithm, each router calculates the shortest path to each network and enters this information into the route table. OSPF Tutorial
| Question ID 14541 | Which statement is true?
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| Option A | An IPv6 address is 64 bits long and is represented as hexadecimal characters.
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| Option B | An IPv6 address is 32 bits long and is represented as decimal digits.
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| Option C | An IPv6 address is 128 bits long and is represented as decimal digits.
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| Option D | An IPv6 address is 128 bits long and is represented as hexadecimal characters.
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| Correct Answer | D |
Explanation Explanation: http://www.cisco.com/en/US/technologies/tk648/tk872/technologies_white_paper0900aecd 8026003d.pdf One of the key advantages IPv6 brings is the exponentially larger address space. The following will outline the basic address architecture of IPv6. 128-bit-long addresses Represented in hexadecimal format: Uses CIDR principles: prefix/prefix length x:x:x:x:x:x:x:x, where x is a 16-bit hex field The last 64 bits are used for the interface ID