Cisco Exam #640-801: CCNA Exam (Whizlabs, set 2)
Test your basic networking knowledge for Cisco's entry-level certification exam with these 10 questions and answers from Whizlabs Software.
courtesy of Whizlabs Software
Question:
1. Bridges are software based where as switches are ______ based.
a. RISC
b. CISC
c. ASIC
d. None of the above.
2. Contention for media access is overcome in the following media access scheme:
a. Star
b. Bus
c. CSMA/CD
d. CSMA/CA
e. None of the above
3. The receiving end on buffer overflow will send the ________ request to the sending end to slow down the sending rate.
a. Source quench
b. Packet quench
c. Acknowledgments
d. None of the above
4. Which layer of the OSI provides translation of data?
a. Application
b. Presentation
c. Session
d. Transport
e. Data Link
5. Switches have MAC address but routers don’t.
a. True
b. False
6. OSPF uses __________ to update the routing table entries.
a. Link state packets
b. Routing entries
c. Link tables
d. None of the above
7. How many bits define a hardware address?
a. 6 bits
b. 16 bits
c. 46 bits
d. 48 bits
8. Which of the following defines a designated router?
a. Designated routers are those routers, which are responsible for routing updates in an OSPF network.
b. Designated routers are those routers, which verify the validity of a router that is passing updates on an OSPF network.
c. Designated routers are those routers, which are responsible for routing updates for a particular area of an IGRP network.
d. Designated routers are those routers, which verify the validity of a router that is passing updates on an IGRP network.
9. Which of the following define the term 100Base FX?
a. 100Mbps Baseband Fiber Optic network
b. 100bps Baseband Fiber optic cable
c. 100Mts ferrous coated Base band cable
d. None of the above.
10. What is the media used in wireless networks referred to as?
a. Antenna
b. Broadband
c. Baseband
d. None of the above
Answers
1. Answer C is correct. Bridges are data link layer devices that are software based where as the Switches use the ASIC switching hardware to achieve the same results of bridges but with more speed and reliability.
2. Answer D is correct. Carrier Sense Multiple Access collision avoidance is the media access scheme used by wireless networks to overcome collision.
3. Answer A is correct. Source quench is an ICMP request generated by the receiving end on buffer overflow to alert the sending end and slow down the sending rate.
4. Answer B is correct. The only layer of the OSI that can data is the Presentation layer.
5. Answer B is correct. All devices having Ethernet interface, including a router, will have a MAC address assigned to them.
6. Answer A is correct. OSPF sends individual routing entries that have changed in the form of link packets to all the designated routers.
7. Answer D is correct. A hardware address is 48 bits long (6 bytes).
8. Answer A is correct. Designated routers are so called because they are designated to receive routing updates for a particular area on an OSPF network.
9. Answer A is correct. 100 denotes the bandwidth, Base denotes the base band media type and Fx denotes the Fiber optic media.
10. Answer B is correct. Wireless network use broadband media.
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