Computer Networks: Transport Layer Encapsulation

What is the function of the input buffer in Ethernet decentralized switching?

Checking the source IP addresses of incoming datagrams
Initiating the transfer of packets from input buffer to the output buffer
Queueing datagrams if they arrive faster than the forwarding rate into the switch fabric (correct)
Encrypting the incoming data packets for security purposes

What does the destination-based forwarding in Ethernet decentralized switching rely on?

Forwarding based on the source IP address
Forwarding based only on the destination IP address (correct)
Forwarding based on a random header field value
Forwarding based on both the source and destination IP addresses

What technique is used to determine the forwarding table entry for a given destination address in Ethernet decentralized switching?

Shortest prefix matching
Longest prefix matching (correct)
Exact matching
Wildcard matching

What is the main purpose of the switching fabric in Ethernet decentralized switching?

Transferring packets from input buffer to appropriate output buffer (B) Signup and view all the answers

How is the switching rate defined in the context of Ethernet decentralized switching?

The rate at which packets can be transferred from inputs to outputs, often measured as a multiple of input/output line rate (C) Signup and view all the answers

When using Ethernet decentralized switching, what is the purpose of longest address prefix matching?

To find the forwarding table entry that matches the destination address (C) Signup and view all the answers

In generalized forwarding, what header field values are used to determine the output port?

Any set of header field values (D) Signup and view all the answers

What does the input port memory contain in Ethernet decentralized switching?

<code>Forwarding table</code> for determining output port using header field values (D) Signup and view all the answers

What happens when destination address ranges don't divide up nicely in Ethernet decentralized switching?

Longest prefix matching is used to find an appropriate range for the destination address (A) Signup and view all the answers

What does the forwarding table entry prioritize when using longest prefix matching in Ethernet decentralized switching?

The most specific matching range for the destination address (C) Signup and view all the answers

What is the function of the control plane in a network router?

Interacting with local control plane control agents remotely (C) Signup and view all the answers

What is the main function of the forwarding plane in a network router?

Moving packets from router’s input to appropriate router output using data plan (A) Signup and view all the answers

How does the routing processor operate in a network router?

In millisecond timeframe (A) Signup and view all the answers

What is the role of the switching fabric in a network router?

Line termination and link layer protocol receive (D) Signup and view all the answers

How does the control plane differ from the data plane in a network router?

The control plane values in arriving packet header 1 011 1 3 2 (D) Signup and view all the answers

What is the primary function of a network router's input port?

Bit-level reception and data link layer functions (C) Signup and view all the answers

What is the responsibility of the network's data plane?

Moving packets from router’s input to appropriate router output using data plan (A) Signup and view all the answers

What is the function of the forwarding switch fabric in a network router?

Line termination and link layer protocol receive (D) Signup and view all the answers

What is the role of the remote controller in a network router's control plane?

A distinct (typically remote) controller interacts with local control plane control agents (CAs) (C) Signup and view all the answers

What is the main function of the network's routing processor?

In millisecond timeframe (B) Signup and view all the answers