Topic A: 1. Ethernet What logical topologies are supported on an Ethernet networ
ID: 667800 • Letter: T
Question
Topic A: 1. Ethernet What logical topologies are supported on an Ethernet network? 2. What is the purpose of the backoff on Ethernet networks? 3. Which switch feature makes choosing crossover or straight-through cables easier? 4.When would you use a rollover cable?Topic B: 1. Network Implementation How is the network portion of an IP address identified? 2. Which portion of a class C address designates the network address? 3. What is the difference between subnetting and supernetting? 4. Which method uses a subnet mask that is longer than the default subnet mask? 5. What are the advantages of static IP address assignments? 6.When might you want to use static IP addressing? 7. In which scenarios would an alternate IP configuration simplify IP configuration? Topic A: 1. Ethernet What logical topologies are supported on an Ethernet network? 2. What is the purpose of the backoff on Ethernet networks? 3. Which switch feature makes choosing crossover or straight-through cables easier? 4.When would you use a rollover cable?
Topic B: 1. Network Implementation How is the network portion of an IP address identified? 2. Which portion of a class C address designates the network address? 3. What is the difference between subnetting and supernetting? 4. Which method uses a subnet mask that is longer than the default subnet mask? 5. What are the advantages of static IP address assignments? 6.When might you want to use static IP addressing? 7. In which scenarios would an alternate IP configuration simplify IP configuration? Topic A: 1. Ethernet What logical topologies are supported on an Ethernet network? 2. What is the purpose of the backoff on Ethernet networks? 3. Which switch feature makes choosing crossover or straight-through cables easier? 4.When would you use a rollover cable?
Topic B: 1. Network Implementation How is the network portion of an IP address identified? 2. Which portion of a class C address designates the network address? 3. What is the difference between subnetting and supernetting? 4. Which method uses a subnet mask that is longer than the default subnet mask? 5. What are the advantages of static IP address assignments? 6.When might you want to use static IP addressing? 7. In which scenarios would an alternate IP configuration simplify IP configuration?
Explanation / Answer
Topic A:
1. Ethernet what logical topologies are supported on an Ethernet network?
A logical topology describes how components of a network communicate across the physical topology. Ethernet supports /uses a logical bus topology when components communicate, regardless of the physical layout of the cabling 10BaseT with a physical star topology to connect components together. Some of the Ethernet topologies use logical star topology to communicate.
2. What is the purpose of the backoff on Ethernet networks?
After collision occurs in Ethernet networks, in order to avoid another collision, Each computer randomly decides a amount of time to wait(back off) before resending / retransmitting. As the number of consecutive collisions increases, the range of possible backoff times increases exponentially.
3. Which switch feature makes choosing crossover or straight-through cables easier?
Cisco switches have a feature called auto-mdix that notices when the wrong cabling pinouts are used.This feature makes the cable work in spite of its type by readjusting the switch's logic.
4 .When would you use a rollover cable?
Rollover cable is often used to connect a computer terminal to a router's console port. This cable is typically flat (and has a light blue color) to help distinguish it from other types of network cabling.
Topic B:
1. Network Implementation: How is the network portion of an IP address identified?
network and host portions of an IP address is determined through the use of a subnet mask which is an 32-bit binary number which acts like a filter when it is applied to the 32-bit IP address.
2. Which portion of a class C address designates the network address?
In Class C, the 3 high-order bits set to 1, 1, and 0, and designating the next 21 bits to number the networks, leaving each network with 256 local addresses.
3. What is the difference between subnetting and supernetting?
Subnetting is a process of dividing anetwork into subnetworks. Supernetting is a process of combining multiple subnetworks to form a network.
4. Which method uses a subnet mask that is longer than the default subnet mask?
Classless Inter domain Routing( CIDR ) method allows the use of prefix to designate the number of network bits in the mask.
Subnetting method based on this concept and uses a subnet mask / prefix can be longer than the default subnet mask.
5. What are the advantages of static IP address assignments?
6.When might you want to use static IP addressing?