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- Question
What port number is used for DHCP?
Options- A. 67
- B. 68
- C. 69
- D. Both A and B
- Correct Answer
- Both A and B
- 1. What are the six OSPF route types? Discuss
- 2. What are the purposes of areas in an OSPF network? Discuss
- 3. Explain the difference between the forwarding of a unicast IP packet and the forwarding of a multicast IP packet. Discuss
- 4. Which of the following describes the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols?
Options- A. HDLC
- B. Cable
- C. VPN
- D. IPSec Discuss
- 5. If you want to disable STP on a port connected to a server, which command would you use?
Options- A. disable spanning-tree
- B. spanning-tree off
- C. spanning-tree security
- D. spanning-tree portfast Discuss
- 6. What does a firewall?
Options- A. Examines packets and decides which ones should be allowed to pass from one network to another.
- B. Maintains a table which maps the IP addresses of two network so that packets can be redirected between the networks.
- C. Compares packets to virus signatures so that packets which are know to be dangerous can be identified and stopped.
- D. Prevents viruses from moving any further through a network Discuss
- 7. Which of the following devices do not operate at all levels of the OSI model?
Options- A. Network management stations (NMSs)
- B. Routers
- C. Web and application servers
- D. Network hosts Discuss
- 8. Acknowledgments, sequencing , and flow control are characteristics of which OSI layer?
Options- A. Layer 2
- B. Layer 3
- C. Layer 4
- D. Lawer 7 Discuss
- 9. Which layer chooses and determines the availability of communicating partners along with the resources necessary to make the connection, coordinates partnering applications, and forms a consensus on procedures for controlling data integrity and error recovery? Discuss
- 10. What is the bit length and expression form of a MAC address? Discuss
CISCO Certification problems
Search Results
Correct Answer: Intra-area, inter area, El, E2, Nl, and N2
Correct Answer: Areas allow the design of a hierarchical network Routes can be summarized or blocked in an area to reduce the amount of routing information on internal OSPF routers
Correct Answer: Unicast IP packets are forwarded based on the destination IP address Multicast packets are forward based on the source IP address If a multicast packet is received on the interface used to send a unicast packet back to the source, the multicast packet is forwarded to multicast neighbors If the multicast packet is received on an interface that would not be used to send a unicast IP packet back to the source, the packet is discarded
Correct Answer: VPN
Explanation:
A VPN allows or describes the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols. A VPN can be set up across any type of link.
Correct Answer: spanning-tree portfast
Explanation:
If you have a server or other devices connected into your switch that you're totally sure won't create a switching loop if STP is disabled, you can use something called portfast on these ports. Using it means the port won't spend the usual 50 seconds to come up while STP is converging.
Correct Answer: Examines packets and decides which ones should be allowed to pass from one network to another.
Correct Answer: Routers
Explanation:
Routersoperate no higher than layer 3 of the OSI model.
Correct Answer: Layer 4
Explanation:
A reliable Transport layer connection uses acknowledgments to make sure all data is transmitted and received reliably. A reliable connection is defined by a virtual circuit that uses acknowledgments, sequencing, and flow control, which are characteristics of the transport layer.
Correct Answer: The application layer is responsible for finding the network resources broadcast from a server and adding flow control and error control (if the application developer chooses)
Correct Answer: 48 bits (6 bytes) expressed as a hexadecimal number
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