NO 1 2 3 4 5 6 Terminology Description Is a deterministic network, meaning each station connected to the network is assured access for transmission of its messages at regular or fixed time intervals. Multiple objects can be sent over single TCP connection between client, server. Allows users to exchange information (data) with other network members. All LAN data traffic is carried over a common coaxial cable link. Value used for error checking. Response time = 2RTT+ file transmission time.

1. A network has a DHCP server that manages a Class C network for IP addresses it gives out. Over the course of a week, 75- 80 people with devices come and go and their devices connect to the network each day. Often, by Wednesday or Thursday, people complain about not being able to connect to the network. Why can the lease life parameter be causing the problem?

SMTP (Simple Mail Transfer Protocol) is the standard protocol for transferring mail between hosts. A TCP connection is set up between a user agent and a server program. The server listens on TCP port 25 for incoming connection requests. The user end of the connection is on a TCP port number above 1023. You have defined the packet filter rule set shown in the table below. These rules permit and/or deny inbound and outbound traffic between the user agent and the mail server. Describe the purpose of each packet filter rule in the table.  Rule Direction Source Address Destination Address Protocol Destination Port Action A2 In External Internal TCP 25 Permit B2 Out Internal External TCP > 1023 Permit C2 Out Internal External TCP 25 Permit D2 In External Internal TCP > 1023 Permit E2 Either Any Any Any Any Deny

Q: Imagine a Web server that maintains a table in which client IP addresses are mapped to the most recently accessed Web pages. When a client connects to the server, the server looks up the client in its table, and if found, returns the registered page. Is this server stateful or stateless?