Cisco Exam #640-801: CCNA Exam (Whizlabs, set 1)
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. The IPX is a universal standard for inter-LAN communication.
a. True
b. False
2. All zeroes and all ones cannot be valid host address.
a. True
b. False
3. If the window size is set to 1, then the first acknowledgment from the receiving end after successfully receiving a packet will be Ack2.
a. True
b. False
4. Segmentation of a data stream happens at which layer of the OSI model?
a. Physical
b. Data Link
c. Network
d. Transport
5. The LLC uses Service Access Point (SAP) defined to identify upper layer protocol stack.
a. True
b. False
6. For which of the following would you do not need to provide a crossover cable?
a. Connecting uplinks between switches.
b. Connecting routers to switches.
c. Connecting hub to hub.
d. Connecting hubs to switches.
7. MAC addresses are the feature of ______________ layer.
a. Logical Link Control Layer
b. Data Link Layer
c. Physical Layer
d. None of the above.
8. Which of the following provide the accurate pin outs for a cross over cable?
a. The pins 1–8 are completely opposite on the other side.
b. It has the pins 1–8 cabled the same on the other side.
c. Pin 1 on one side connects to pin 3 on the other side and pin 2 connects to pin 6 on the other end.
d. Pin 2 on one side connects to pin 3 on the other side, and pin 1 connects to pin 6 on the other end.
9. Routers are devices of _________ layer of the Cisco hierarchical model.
a. Physical
b. Transport
c. Distribution
d. Network
10. Which of the OSI layers are responsible for defining the signal strength standards?
a. Physical
b. Transport
c. Data Link
d. Network
Answers
1. Answer A is correct. The IPX is proprietary to Novell and is not a universal standard.
2. Answer A is correct. Both the network Id and the Host ID as a general rule cannot be either all zeroes or all ones.
3. Answer A is correct. Ack is always Seq.no +1. Hence the acknowledgement will be Ack2.
4. Answer D is correct. Segmenting data is the responsibility of the transport layer.
5. Answer A is correct. LLC sub-layer of the Data Link helps to identify the upper protocol stack to its peer layer during a network communication. It uses Service Access Points for this purpose.
6. Answers B and C are correct. Crossover cables are used to connect switch to switch and hub to switch.
7. Answer B is correct. MAC addresses, also called hardware addresses, are used to uniquely identify hosts on a local network, by the Data link Layer.
8. Answer C is correct. Crossover cables are used to connect hubs to switches, PC to PC, etc. Pin 1 connects to pin 3 on the other end, and pin 2 connects to pin 6.
9. Answer C is correct. Routers are defined in the distribution layer of the Cisco hierarchical model.
10. Answer A is correct. The Physical layer is used to encode 1s and 0s into a digital signal to be transported over a network medium.
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