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Questions and Answers
What type of address is used in IPv6 to allow a one-to-many relationship between source and destination?
What type of address is used in IPv6 to allow a one-to-many relationship between source and destination?
anycast addresses
What defines the bounds of a network that determines which devices must receive a broadcast packet?
What defines the bounds of a network that determines which devices must receive a broadcast packet?
broadcast domain
What is the method of IP addressing that uses a prefix to determine network and host IDs?
What is the method of IP addressing that uses a prefix to determine network and host IDs?
CIDR
What is the address that always refers to the local computer?
What is the address that always refers to the local computer?
What type of network communication allows a packet to be addressed so that multiple destinations receive it?
What type of network communication allows a packet to be addressed so that multiple destinations receive it?
Which command displays the contents of the local DNS cache?
Which command displays the contents of the local DNS cache?
Your computer's IP address is 201.18.149.37/28. Which of the following is a valid default gateway?
Your computer's IP address is 201.18.149.37/28. Which of the following is a valid default gateway?
Which subnet mask should you use if you want 16 bits of host address space?
Which subnet mask should you use if you want 16 bits of host address space?
Route summarization can combine multiple routing table entries into a single entry.
Route summarization can combine multiple routing table entries into a single entry.
To determine the network ID of an IP address, a logical AND operation is performed between the IP address and the subnet mask.
To determine the network ID of an IP address, a logical AND operation is performed between the IP address and the subnet mask.
Which of the following is an invalid IP address/prefix to assign to a host?
Which of the following is an invalid IP address/prefix to assign to a host?
An IP address is composed of 48 bits that are grouped into 8-bit octets and are represented by a decimal number from 0 to 255.
An IP address is composed of 48 bits that are grouped into 8-bit octets and are represented by a decimal number from 0 to 255.
Which IP address is a Class C address?
Which IP address is a Class C address?
What process must be in operation to allow all workstations in a private addressing scheme to access the Internet using one public IP address?
What process must be in operation to allow all workstations in a private addressing scheme to access the Internet using one public IP address?
What is the binary number system based on?
What is the binary number system based on?
How many bits are in an IPv6 address?
How many bits are in an IPv6 address?
If your original network address with prefix is 172.16.0.0/16, what should your new network address be if you need 16 subnets?
If your original network address with prefix is 172.16.0.0/16, what should your new network address be if you need 16 subnets?
Which of the following are solutions to the shortage of available IPv4 addresses? (Choose all that apply)
Which of the following are solutions to the shortage of available IPv4 addresses? (Choose all that apply)
Which part of an IP address denotes its class?
Which part of an IP address denotes its class?
IPv6 addresses are written as 12 16-bit hexadecimal numbers separated by colons.
IPv6 addresses are written as 12 16-bit hexadecimal numbers separated by colons.
Which part of a computer's IP address configuration indicates the portion of the address that specifies the network ID?
Which part of a computer's IP address configuration indicates the portion of the address that specifies the network ID?
What prefix allows you to assign 30 host addresses for the network address 192.168.100.0?
What prefix allows you to assign 30 host addresses for the network address 192.168.100.0?
How many host addresses are available on a Class C network?
How many host addresses are available on a Class C network?
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Study Notes
IP Addressing Concepts
- Anycast Addresses: Type of address in IPv6 facilitating one-to-many communication between source and destination.
- Broadcast Domain: Defines the range of devices that receive broadcast packets from any device within the network.
- CIDR (Classless Inter-Domain Routing): IP addressing method determined by a prefix, indicating how many bits are used for network identification.
- Loopback Address: An address that always points to the local machine, primarily used for testing.
- Multicasting: Enables network communication where data packets are sent to multiple specified destinations simultaneously.
Networking Commands and Configuration
- View DNS Cache: Use the command
ipconfig /displaydnsto display the contents of the local DNS cache. - Default Gateway Validity: For the IP address 201.18.149.37/28, 201.18.149.46 is a valid default gateway.
- Subnet Mask for 16 Host Bits: To create 16 bits of host address space, the subnet mask used should be 255.255.0.0.
Networking Principles
- Route Summarization: True statement; can consolidate multiple routing table entries into a single entry.
- Network ID Determination: Computers use a logical AND operation between IP address and subnet mask to identify the network ID.
- Invalid IP Address Assignment: 172.16.255.128/25 is an invalid IP address/prefix for a host.
IP Address Structure and Classes
- IPv6 Address Size: An IPv6 address is composed of 128 bits, not 32 or 64.
- Class C Address: 193.19.101.11 is classified as a Class C address, which has specific ranges for addressing.
- Public IP Address Access: To allow multiple workstations to use a single public IP, the network must implement Port Address Translation (PAT).
Addressing Techniques and Shortages
- Binary Number System: Based on powers of 2, which is fundamental to digital communications.
- Shortage Solutions for IPv4: Strategies include IPv6 adoption, supernetting, subnetting, NAT (Network Address Translation), and private addressing.
- Class Identification: The class of an IP address is indicated by the first octet of the address.
Address Configuration
- IPv6 Address Format: False statement; IPv6 addresses consist of eight 16-bit hexadecimal numbers separated by colons.
- Subnet Mask Purpose: The subnet mask indicates the part of the IP address that designates the network ID.
- Host Addresses in Class C: A Class C network supports 254 available host addresses.
Host Addressing
- Host Address Assignment: For the network address 192.168.100.0, the prefix for 30 host addresses is /27.
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