40 Questions
What is a key characteristic of IP in relation to the physical layer?
It is independent of the media type
What is the main purpose of the IPv4 header?
To ensure packets are sent in the correct direction
What happens to IPv4 packets when the MTU size is smaller than the packet size?
The packet is fragmented
What is a disadvantage of packet fragmentation?
Increased latency
What is the primary communication protocol for the network layer?
IPv4
What is the purpose of the Maximum Transmission Unit (MTU)?
To determine the maximum packet size
What is a characteristic considered by the network layer when transmitting packets?
Maximum transmission unit (MTU)
How does IPv6 differ from IPv4 in terms of packet fragmentation?
IPv6 never fragments packets
What is the primary function of the Network Layer?
To provide services for exchanging data between devices
What does IP encapsulation do to the transport layer segment?
It encapsulates the transport layer segment
What is the main purpose of the IP protocol?
To deliver a packet from a source to a destination over an interconnected system of networks
What happens to the IP addressing when a packet traverses a network?
It remains the same from source to destination
What is the main characteristic of the IP protocol?
It was designed with low overhead
What is the purpose of routing protocols such as OSPF?
To perform routing between devices
What happens to the IP packet when it traverses the network?
It is examined by all layer 3 devices
What is the function of TCP at Layer 4?
To track and manage the flow of packets
What is a characteristic of Connectionless IP?
It does not establish a connection with the destination before sending the packet.
What is the purpose of another protocol in Connectionless IP?
To handle connection-oriented traffic.
What is meant by Best Effort in IP?
IP does not guarantee delivery of the packet.
What is a limitation of IP as an unreliable network layer protocol?
It cannot manage or fix undelivered or corrupt packets.
Why does IP have reduced overhead?
Because there is no mechanism to resend data that is not received.
What does IP not expect from the recipient?
Acknowledgments.
What is a consequence of IP being connectionless?
The destination will receive the packet when it arrives.
What is the role of other protocols in ensuring packet delivery?
They track packets and ensure their delivery.
What is the primary purpose of the header in an IPv4 packet?
To provide information to all Layer 3 devices that handle the packet
What is the format of the IPv4 packet header?
Binary, with fields examined by the Layer 3 process
Which of the following fields is NOT a significant field in the IPv4 header?
Packet Length
What is the primary function of the Time to Live (TTL) field in the IPv4 header?
To determine the packet's Layer 3 hop count
What is the major limitation of IPv4 that has led to the development of private addressing and NAT?
Lack of end-to-end connectivity
What is the purpose of the Differentiated Services (DiffServ) field in the IPv4 header?
To determine the packet's priority for QoS
What is the primary advantage of using IPv6 over IPv4?
Larger address space to address IPv4 address depletion
How many bits are used to specify the source and destination IP addresses in an IPv4 packet?
32 bits each
What is the purpose of the Flow Label field in an IPv6 packet?
To identify packets belonging to the same flow for identical handling
What is the function of the Next Header field in an IPv6 packet?
To identify the next level protocol, such as ICMP, TCP, or UDP
What is the purpose of the Hop Limit field in an IPv6 packet?
To specify the maximum number of hops a packet can traverse
What is a characteristic of IPv6 extension headers?
They are optional and placed between the IPv6 header and payload
What is the size of the source and destination IPv6 addresses?
128 bits
What is a key difference between IPv4 and IPv6 packet fragmentation?
IPv4 routers fragment packets, while IPv6 routers do not
What is the purpose of the Payload Length field in an IPv6 packet?
To specify the length of the payload in the packet
How do hosts create routing tables in IPv6?
By creating their own routing tables
Test your understanding of the network layer, including its services, IP versions, and protocols such as OSPF and ICMP. Learn about addressing, encapsulation, routing, and de-encapsulation.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
