40 Questions
What was NAT initially intended to be?
A temporary solution
What is a side effect of NAT on the network?
Increased network complexity and latency
Who developed IPv6?
Internet Engineering Task Force (IETF)
What is an improvement of IPv6 over IPv4?
Improved packet handling and increased address space
What is the primary reason NAT is not needed in IPv6?
IPv6 has a larger address space
What is the length of the IPv6 packet header?
Fixed at 40 Bytes or octets
What happened to several IPv4 fields in the IPv6 packet header?
Several were removed to improve performance
What is a benefit of IPv6 in terms of NAT?
It eliminates the need for NAT
What is the primary purpose of the information in the header of an IPv4 packet?
To be used by all layer 3 devices that handle the packet
What is the significance of the 'Version' field in an IPv4 packet header?
It differentiates between IPv4 and IPv6 packets
What is the primary function of the 'Time to Live' field in an IPv4 packet header?
To indicate the number of hops a packet can take
What is the main limitation of IPv4 addressed by the use of private addressing and NAT?
Lack of end-to-end connectivity
What is the purpose of the 'Protocol' field in an IPv4 packet header?
To identify the next level protocol
What is the size of the source and destination IPv4 addresses in the packet header?
32 bits
What is the primary reason for the development of IPv6?
To address the limitation of IPv4 address depletion
What is the 'Header Checksum' field in an IPv4 packet header used for?
To detect corruption in the packet
What is the IPv4 address used by a host to send packets to itself?
127.0.0.1
What determines whether the destination is local or remote in IPv4?
Source IP address and subnet mask
What is the term for the process of identifying the best path to a destination?
Routing
What is the term for the router connected to the local network segment?
Default gateway
Why is a default gateway necessary for remote traffic?
To forward traffic to the default gateway
What feature must a default gateway have?
An IP address in the same range as the rest of the LAN
What happens to local traffic?
It is dumped out the host interface
How does a source device determine whether the destination is local or remote in IPv6?
Using the network address and prefix advertised by the local router
What is the primary function of a default gateway?
To route traffic to other networks
What happens if a device has no default gateway or a bad default gateway?
Traffic will not be able to leave the LAN
How do hosts typically receive the IPv4 address of the default gateway?
Dynamically from DHCP or manually configured
What is the purpose of a default route in the routing table?
To route traffic to remote networks
What is required to send traffic outside the local network?
A default gateway
What happens if the default gateway is down or not configured?
Traffic cannot be forwarded outside the local network
How do devices on the LAN know the default gateway?
Either statically or through DHCP
What is the default gateway in a host's routing table?
A last resort route
What is a characteristic of a static route?
It must be configured manually
What is a benefit of using a dynamic routing protocol?
It allows routers to automatically learn about remote networks
What type of route is used to forward all traffic to a specific direction?
Default Route
What is a scenario in which a static route is often used?
In conjunction with a dynamic routing protocol
What is a limitation of static routing?
It requires manual configuration
What is a characteristic of dynamic routing?
Routers automatically share routing information
What type of route is learned manually?
Static Route
What is a benefit of dynamic routing over static routing?
It can compensate for topology changes automatically
Learn about the IPv4 packet header, its characteristics, and the importance of its fields in network communication. Understand how Layer 3 devices handle packets and examine the binary information. Get familiar with the source and destination fields.
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