Discussion
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- Question
Describe the difference between routing and switching.
- Correct Answer
- Routing moves a letter or telephone call to the access layer (as in a street or telephone exchange) Switching makes the final delivery A switching decision is made on the part of the address that is not used in routing (as in the street number or last four digits of a phone number)
- 1. Why are multiple protocols used, such as a package, addressing, delivery, and transportation, instead of using one protocol defining everything? Discuss
- 2. Convert FACE1234 16 to dotted decimal. Discuss
- 3. What are the access, distribution, and core components of a North American phone number? Discuss
- 4. What is the full IPv6 address represented by FF02::130F:5? Discuss
- 5. Which of the following uses ATM as the Data Link layer protocol that's terminated at what's known as the DSLAM?
Options- A. DSL
- B. PPPoE
- C. Frame Relay
- D. Dedicated T1 Discuss
- 6. Explain the difference between a classful and a classless routing protocol. Discuss
- 7. What types of routes are allowed into a NSSA? Discuss
- 8. What types of routes are allowed into a stub area? Discuss
- 9. Why are intra-area summary routes not allowed? Discuss
- 10. How does OSPF determine the DR on a multi-access network? Discuss
CISCO Certification problems
Search Results
Correct Answer: Using multiple protocols is modular and allows changes to one protocol without affecting the others For example, if the addressing protocol is dependent on the delivery protocol, changes to one would imply changes need to be made to the other
Correct Answer: Answer: FA 16 = 250 10, CE 16 = 206 10, 12 16 = 18 10, and 34 16 = 52 10 FACE1234 16 = 2502061852 dotted decimal
Correct Answer: The last four digits are the used at the access layer to identify a particular telephone The next three numbers are used at the distribution layer to identify an exchange that services several phone numbers The area code is used at the core level for routing between different regions
Correct Answer: FF02:0000:0000:0000:0000:0000:130F:0005
Correct Answer: DSL
Explanation:
ATM is the Data-Link layer protocol that's typically used over the DSL layer1 connection from the CPE and terminated at what's known as the DSLAM - an ATM switch that contains DSL interface cards, or ATU-Cs.
Correct Answer: Classless routing protocols advertise subnet mask information along with the network prefixes Classful routing protocols do not Therefore, for a classful protocol, all subnets for the major network number being used must be the same length Also, classful protocol cannot support discontiguous networks prefixes
Correct Answer: OSPF intra-area and interarea routes, and possibly a default route External routes from ABRs are blocked, and external routes from ASBRs are converted to N1 or N2 routes
Correct Answer: OSPF intra-area and interarea routes, and a default route External routes are not advertised into a stub area
Correct Answer: OSPF databases on routers in the same area must be identical If route summarization was allowed within an area, some routers would have specific routes and some routers would have summary routes for routes in the area If this were allowed, the databases for the area would never agree
Correct Answer: The router with the highest interface priority will be the router ID If all the interface priorities on the multi-access network are the same, the router with the highest router ID will be the DR
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