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CNE Final Exam Prep |Questions with 100% Correct Answers
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CNE Final Exam Prep |Questions with 100%Correct Answers
Name given to bits that indicate congestion - ✔️✔️ECN - Explicit Congestion Notification
Why should you avoid ports 0-1023 - ✔️✔️reserved for well known protocols
Switching fabric - ✔️✔️forwards input ports to output ports
3 techniques that allows switching fabric to forward - ✔️✔️Memory Switching
Bus Switching
Interconnected Network
Memory Switching - ✔️✔️first gen, speed limited by memory bandwidth, under direct control of
CPU
Bus Switching - ✔️✔️data forwarding through shared bus, limited by bus bandwidth
Interconnected Network - ✔️✔️Many to Many type of connection
HOL blocking - ✔️✔️Head of line blocking - packet in the front of the queue blocks arriving
datagrams
RTT - ✔️✔️Round Trip TIme, the time it takes for a small packet to travel from client to server
and then back to the client
, Large buffers minimize packet loss, what's the detriment of excessively large buffers? -
✔️✔️Expensive, increases response time, uses too much memory, increases time a client waits to
receive a full message
WFQ - ✔️✔️Weighted fair queuing - round robin, but adds a priority on top of that, determined
by header field values
AKA generalized round robin
ICANN is authorized to manage root DNS servers, what else does? - ✔️✔️ICANN - Internet
Corporation for Assigned Names and Numbers
Root DNSs are managed by independent organizations around the world
IP Address allocation and TLD Management
What's the purpose of DHCP? - ✔️✔️Dynamic Host Configuration Protocol
When a network joins a server, an IP is dynamically allocated, this allows the host to be
referenced by an IP address
IPv4 and IPv6 - ✔️✔️32 bits, 128 bits
Steps of client with no IP connecting - ✔️✔️1. Sends message to look for DHCP server
2. DHCP responds, gives suggested IP address
3. Client responds, saying it will use the IP address
4. DHCP acknowledges
What's the technique used to send IPv6 over IPv4? - ✔️✔️Encapsulation: Taking data, putting it
inside another packet for a specific protocol (IPv4 (IPv6))
Tunneling: Sending encapsulated packets to pass seamlessly through a network
Properties of Link State algorithms - ✔️✔️Network topology must be known by each host
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