Ccna 1 Final Exam

In April of 1979, a U.S. court finds the Beatle 's former manager _________ guilty of tax evasion and he is sentenced to serve two months of a two-year sentence in prison.

The identified software vulnerability is that customers, clients and employees have the same network privilege with access through a corporate firewall, as in the case of the Chula Vista location, there is direct access to the internet over WAN without any policy restrictions. The recommendation is to install additional host-based firewalls on all servers and user computers. In addition, remove the WAN connection at the Chula Vista location and route all network traffic through the corporate firewall.

For a better understanding of the situation in the network of the company I decided to start the analysis by the vulnerabilities that this one presents. Many of these vulnerabilities are the cause for different types of network attacks. It should be noted that while many of these vulnerabilities may be mitigated or eliminated the possibility of an attack always exists.

Networks are typically plagued by three primary vulnerabilities: Technology vulnerabilities, Configuration vulnerabilities, and Security policy vulnerabilities.

Network connectivity issues can crop up at any time and the issues seen could be related to any area of the network or Internet that a user is connected. There are several programs that could be used to help determine where the error or issue may reside. The four programs that will be reviewed are ipconfig, ping, tracert and nslookup.

To complete the comprehensive security audit objective of manual configuration review several tasks must be completed including the configuration of an SCP and TFTP server, download of configurations for network devices, comparison of configurations and review of current configurations. The Enterprise Network Engineer will configure both an SCP and TFTP server for use during the security best practices audit. The SCP server will be the primary unit responsible upload and download of configuration files, while the TFTP server will be utilized for devices, which do not support SCP, providing a secondary method of file transfer. The Enterprise Network Engineer will utilize the

Typically, an internet connection is established using a methodology named ‘THREE WAY HANDSHAKING’. Following this protocol, at first client pc sends request (SYN) for connection establishment and then receiving this request server pc response to it sending an acknowledgement of approval (SYN_ACK) message to the client pc.

Inquired if operating systems, servers and other network appliances operating on the network is configured for maximum security.(Obj. C)

Transmission Control Protocols or TCP is among the key methods utilized in Internet Protocol Suites. TCP has got two end systems, a web browser and a web server from which it operates. TCP provides delivery of a stream of bytes from a program on one computer system to another. Internet Protocols operate at a lower level compared to TCP. An IP is used for data transmission across a packet switched internetwork. In X on and X off signals, the X means transmitter. These types of signals are used to manage the movement of data between computer systems on an asynchronous serial connection. In X on, the bit configuration is the keyboard blend of Ctrl-Q and the Ctrl-S combination is for X off. There are two kinds of transmissions, parallel as

Since the mask indicates that the first 24 bits of the address are the network, the network address must be

Intertrode company has determined that the current security countermeasures are insufficient due to increasing number of physical connections which are unauthorized to the company 's network. so, as the previous network designers we have to implement more security countermeasures which are helpful for the present situation of the Intertrode company.

In this report, the OSI and TCP/IP models will be compared after going through a brief history and how the models were made. The report will bring the reader a greater understanding about the OSI and TCP model. The model shows the different layers for example for the OSI model it has the following layers: Application layer, Presentation layer, Session layer, Transport layer, Network layer, Data-Link layer and Physical layer. The similarities in the TCP model would be: the Application layer and the Transport layer. This is then compared for the differences to see which models layer has, that is different to the other.

“Routing control protocol is essential in order to dynamically determine the topology of the network and to detect failing links. Bridging control protocols may be used similarly in smaller networks or may be used in combination with routing.” Higginson & Shand (1997). Bridge and routers are applied in computer networking as they both connect two or more interrelated Local Area Networks (LAN) therefore creating an extension of the Local Area Network or a Wide Area Network. Bridges operates on MAC layer addresses and at the data link layer of the Open System Interconnection (OSI) model whereas routers operate on the network control layer - third layer of the OSI model. Since routers do not have the

Connection Establishment, Management and Termination: TCP provides set of procedures to establish a TCP connection to transfer data, then manage the data transfer through logical procedures to handle problems that may result at any time in the connection and finally when done with this connection it terminates.

Internet Protocol (IP), User Datagram Protocol (UDP), and Transmission Control Protocol (TCP) are the basic tools for network communication. The name TCP/IP comes from two of the best-known protocols of the internet protocol suite, the Transmission Control Protocol and the Internet Protocol. With TCP/IP you can communicate over single networks or interconnected networks (Internet).