IPv4 Packet Header Fields

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What was NAT initially intended to be?

A permanent solution
A scalability solution
A long-term solution
A temporary solution (correct)

What is a side effect of NAT on the network?

Increased network simplicity
Increased network complexity and latency (correct)
Reduced network complexity and latency
Improved network performance

Who developed IPv6?

Internet Engineering Task Force (IETF) (correct)
Internet Society (ISOC)
Internet Governance Forum (IGF)
Internet Architecture Board (IAB)

What is an improvement of IPv6 over IPv4?

Improved packet handling and increased address space (D) Signup and view all the answers

What is the primary reason NAT is not needed in IPv6?

IPv6 has a larger address space (C) Signup and view all the answers

What is the length of the IPv6 packet header?

Fixed at 40 Bytes or octets (A) Signup and view all the answers

What happened to several IPv4 fields in the IPv6 packet header?

Several were removed to improve performance (B) Signup and view all the answers

What is a benefit of IPv6 in terms of NAT?

It eliminates the need for NAT (B) Signup and view all the answers

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 (A) Signup and view all the answers

What is the significance of the 'Version' field in an IPv4 packet header?

It differentiates between IPv4 and IPv6 packets (D) Signup and view all the answers

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 (A) Signup and view all the answers

What is the main limitation of IPv4 addressed by the use of private addressing and NAT?

Lack of end-to-end connectivity (C) Signup and view all the answers

What is the purpose of the 'Protocol' field in an IPv4 packet header?

To identify the next level protocol (D) Signup and view all the answers

What is the size of the source and destination IPv4 addresses in the packet header?

32 bits (B) Signup and view all the answers

What is the primary reason for the development of IPv6?

To address the limitation of IPv4 address depletion (D) Signup and view all the answers

What is the 'Header Checksum' field in an IPv4 packet header used for?

To detect corruption in the packet (C) Signup and view all the answers

What is the IPv4 address used by a host to send packets to itself?

127.0.0.1 (A) Signup and view all the answers

What determines whether the destination is local or remote in IPv4?

Source IP address and subnet mask (B) Signup and view all the answers

What is the term for the process of identifying the best path to a destination?

Routing (A) Signup and view all the answers

What is the term for the router connected to the local network segment?

Default gateway (A) Signup and view all the answers

Why is a default gateway necessary for remote traffic?

To forward traffic to the default gateway (B) Signup and view all the answers

What feature must a default gateway have?

An IP address in the same range as the rest of the LAN (B) Signup and view all the answers

What happens to local traffic?

It is dumped out the host interface (B) Signup and view all the answers

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 (A) Signup and view all the answers

What is the primary function of a default gateway?

To route traffic to other networks (C) Signup and view all the answers

What happens if a device has no default gateway or a bad default gateway?

Traffic will not be able to leave the LAN (C) Signup and view all the answers

How do hosts typically receive the IPv4 address of the default gateway?

Dynamically from DHCP or manually configured (A) Signup and view all the answers

What is the purpose of a default route in the routing table?

To route traffic to remote networks (A) Signup and view all the answers

What is required to send traffic outside the local network?

A default gateway (B) Signup and view all the answers

What happens if the default gateway is down or not configured?

Traffic cannot be forwarded outside the local network (C) Signup and view all the answers

How do devices on the LAN know the default gateway?

Either statically or through DHCP (D) Signup and view all the answers

What is the default gateway in a host's routing table?

A last resort route (C) Signup and view all the answers

What is a characteristic of a static route?

It must be configured manually (C) Signup and view all the answers

What is a benefit of using a dynamic routing protocol?

It allows routers to automatically learn about remote networks (A) Signup and view all the answers

What type of route is used to forward all traffic to a specific direction?

Default Route (A) Signup and view all the answers

What is a scenario in which a static route is often used?

In conjunction with a dynamic routing protocol (C) Signup and view all the answers

What is a limitation of static routing?

It requires manual configuration (D) Signup and view all the answers

What is a characteristic of dynamic routing?

Routers automatically share routing information (A) Signup and view all the answers

What type of route is learned manually?

Static Route (A) Signup and view all the answers

What is a benefit of dynamic routing over static routing?

It can compensate for topology changes automatically (C) Signup and view all the answers