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Mark Pearl UNISA COS 2626 Networks
Computer Networks UNISA - Chap 12 – Networking Security
After reading this section you should be able to Identify security risks in LANs and WANs and design security policies that minimize risks Explain how physical security contributes to network security Discuss hardware and design based security techniques Understand methods of encryption such as SSL and IPSec, that can secure data in storage and in transit Describe how popular authentication protocols such as RADIUS< TACACS,Kerberos, PAP, CHAP, and MS-CHAP function Use network operating system ......

Posted On Saturday, April 7, 2012 3:02 PM

Computer Networks UNISA - Chap 8 – Wireless Networking
After reading this section you should be able to Explain how nodes exchange wireless signals Identify potential obstacles to successful transmission and their repercussions, such as interference and reflection Understand WLAN architecture Specify the characteristics of popular WLAN transmission methods including 802.11 a/b/g/n Install and configure wireless access points and their clients Describe wireless MAN and WAN technologies, including 802.16 and satellite communications The Wireless Spectrum ......

Posted On Saturday, April 7, 2012 12:30 PM

Computer Networks UNISA - Chap 10 – In Depth TCP/IP Networking
After reading this section you should be able to Understand methods of network design unique to TCP/IP networks, including subnetting, CIDR, and address translation Explain the differences between public and private TCP/IP networks Describe protocols used between mail clients and mail servers, including SMTP, POP3, and IMAP4 Employ multiple TCP/IP utilities for network discovery and troubleshooting Designing TCP/IP-Based Networks The following sections explain how network and host information in ......

Posted On Saturday, April 7, 2012 9:51 AM

Computer Networks UNISA - Chap 14 – Insuring Integrity & Availability
After reading this section you should be able to Identify the characteristics of a network that keep data safe from loss or damage Protect an enterprise-wide network from viruses Explain network and system level fault tolerance techniques Discuss issues related to network backup and recovery strategies Describe the components of a useful disaster recovery plan and the options for disaster contingencies What are integrity and availability? Integrity – the soundness of a networks programs, data, services, ......

Posted On Friday, April 6, 2012 3:55 PM

Computer Networks UNISA - Chap 4 – Introduction to TCP/IP
After reading this chapter you should be able to Identify and explain the functions of the core TCP/IP protocols Explain how the TCP/IP protocols correlate to layers of the OSI model Discuss addressing schemes for TCP/IP in IPv4 and IPv6 Describe the purpose and implementation of DNS and DHCP Identify the well-known ports for key TCP/IP services Describe common Application layer TCP/IP protocols Characteristics of TCP/IP (Transmission Control Protocol / Internet Protocol) TCP/IP is a suite of specialized ......

Posted On Monday, January 23, 2012 6:30 AM

Computer Networks UNISA - Chap 7 – WANS and Remote Connectivity
After reading this you should be able to Identify a variety of uses for WANs Explain different WAN topologies, including their advantages and disadvantages Compare the characteristics of WAN technologies, including their switching type, throughput, media, security, and reliability Describe several WAN transmission and connection methods, including PSTN, ISDN, T-carriers, DSL, broadband cable, ATM and SONET Describe multiple methods for remotely connecting to a network WAN Essentials A WAN is a network ......

Posted On Monday, January 23, 2012 6:27 AM

Computer Networks UNISA - Chap 6 – Network Hardware
After reading this you should be able to Identify the functions of LAN connectivity hardware Install, configure, and differentiate between network devices such as NAIC’s, hubs, bridges, switches, routers, and gateways Explain the advanced features of a switch and understand popular switching techniques, including VLAN management Explain the purposes and properties of routing Describe common IPv4 and IPv6 routing protocols NICs (Network Interface Cards) Are connectivity devices that enable a workstation, ......

Posted On Saturday, January 14, 2012 7:01 PM

Computer Networks UNISA - Chap 5 – Topologies and Ethernet Standards
After reading this you should be able to Describe the basic and hybrid LAN physical topologies, and their uses, advantages, and disadvantages Describe the backbone structures that form the foundation for most LANs Understand the transmission methods underlying Ethernet networks Compare the different types of switching used in data transmission Simple Physical Topologies Physical topology is The physical layout or pattern of the nodes on a network It depicts a network in broad scope (does not specify ......

Posted On Saturday, January 14, 2012 12:01 PM

Computer Networks UNISA - Chap 3 – Transmission Basics and Networking Media
After reading this you should be able to Explain basic data transmission concepts, including full duplexing, attenuation, latency, and noise Describe the physical characteristics of coaxial cable, STP, UTP, and fiber-optic media Compare the benefits and limitations of different networking media Explain the principles behind and uses for serial connector cables Identify wiring standards and the best practices for cabling buildings and work areas Transmission Basics Transit – means to issue signals ......

Posted On Friday, January 13, 2012 6:31 AM

Computer Networks UNISA – Chap 2 - Networking Standards and the OSI Models
After reading this chapter you should be able to Identify organizations that set standards for networking Describe the purpose of the OSI model and each of its layers Explain specific functions belonging to each OSI model layer Understand how two network nodes communicate through the OSI model Discuss the structure and purpose of data packets and frames Describe the two types of addressing covered by the OSI model Networking Standards Organizations What are standards? Standards are documented agreements ......

Posted On Saturday, January 7, 2012 1:20 PM

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