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- Question
Which layer defines how data is formatted , presented, encoded, and converted for use on the network?
- Correct Answer
- The presentation layer makes sure that data is in a readable format for the Application layer
- 1. At which layer is routing implemented , enabling connections and path selection between two end systems? Discuss
- 2. Convert 10100010111101011001110110001011 2 to dotted decimal. Discuss
- 3. The network address of 172.16.0.0/19 provides how many subnets and hosts?
Options- A. 7 subnets, 2046 hosts each
- B. 7 subnets, 8190 hosts each
- C. 8 subnets, 2046 hosts each
- D. 8 subnets, 8190 hosts each Discuss
- 4. Which class of IP address provides a maximum of only 254 host addresses per network ID?
Options- A. Class A
- B. Class B
- C. Class C
- D. Class D Discuss
- 5. What is the subnet for host ID 10.16.3.65/23? Discuss
- 6. If a switch has three computers connected to it, with no VLANs present, how many broadcast and collision domains is the switch creating?
Options- A. Three broadcast and one collision
- B. Three broadcast and three collision
- C. one broadcast and three collision
- D. One broadcast and one collision Discuss
- 7. What must happen if a DHCP IP conflict occurs?
Options- A. Proxy ARP will fix the issue
- B. The client uses a gratuitous ARP to fix the issue
- C. The administrator must fix the conflict by hand at the DHCP server
- D. The DHCP server will reassign new IP addresses to both computers Discuss
- 8. Which OSI layer defines the standards for cabling and connectors?
Options- A. Layer 1
- B. Layer 4
- C. Layer 7
- D. Layer 3 Discuss
- 9. Which layer combines bits into bytes and bytes into frames, uses MAC addressing , and provides error detection? Discuss
- 10. You have a Class B network and need 29 subnets. What is your mask? Discuss
CISCO Certification problems
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Correct Answer: The Network layer provides routing through an internetwork and logical addressing
Correct Answer: Convert to dotted hexadecimal first, and then convert each hexadecimal number pair to decimal A2F59D8B then 162245157139
Correct Answer: 8 subnets, 8190 hosts each
Explanation:
A CIDR address of/19 is 255.255.224.0. This is a Class B address, so that is only 3 subnet bits, but it provides 13 host bits, or 8 subnets, each with 8,190 hosts.
Correct Answer: Class C
Explanation:
Class C network address has only 8 bits for defining hosts :
Correct Answer: A/23 is 2552552540 The third octet is a block size of 20, 2, 4 The subnet is in the 1620 subnet; the broadcast address is 163255
Correct Answer: one broadcast and three collision
Explanation:
If a switch has three computersconnected to it, with no VLANs present , one broadcast and three collision domains are created.
Correct Answer: The administrator must fix the conflict by hand at the DHCP server
Explanation:
If a DHCP Conflict is detected, either by the server sending a ping and getting response or by a host using a gratuitous ARP (arp'ing for its own IP address and seeing if a host responds), then the server will hold that address and not use it again until it is fixed by an administrator.
Correct Answer: Layer 1
Explanation:
OSI layer 1 defines the standards for cabling and connectors.
Correct Answer: The Data Link layer is responsible for the framing of data packets
Correct Answer: A default Class B is 25525500 A Class B 2552552550 mask is 256 subnets, each with 254 hosts We need fewer subnets If we used 255255240 0, this provides 16 subnets Let's add one more subnet bit 2552552480 This is 5 bits of subnetting, which provides 32 subnets This is our best answer A/21
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