25% 3.0 IP Connectivity 3.4 Configure and verify single area OSPFv2 (CCNA)

Ospf is an IGP, or an interior gateway protocol. The bullet on OSPF of the CCNA blueprint is to configure and verify a single area OSPFv2. The sub bullets will describe how to do that. 3.4 Configure and verify single area OSPFv23.4.a Neighbor adjacencies3.4.b Point-to-point3.4.c Broadcast (DR/BDR selection)3.4.d Router ID OSPFv1 is old and not … Continue reading 25% 3.0 IP Connectivity 3.4 Configure and verify single area OSPFv2 (CCNA) →

20% 1.0 Network Fundamentals 1.5 Compare TCP to UDP

Tcp and udp are layer 4 of the OSI model. Tcp is the "transmission control protocol. Udp is the user datagram protocol. So you have physical, data link, network, and then transport layer, which is where tcp and udp reside. Some basic differences are: tcp is reliable, udp is unreliable. Tcp is "thick" and udp … Continue reading 20% 1.0 Network Fundamentals 1.5 Compare TCP to UDP →

1.0 Network Fundamentals. 20%. 1.4 Identify interface and cable issues (collisions, errors, mismatch duplex, and/or speed)

Interface and cable issues are physical problems.  Physical problems can manifest themselves with latency, or slowness issues, for example taking forever to browse the internet, or choppy video, or an IP phone with unrecognizable voice.  This means frames are dropped or have been corrupted.  The command "show interface" on a Cisco switch, or router, can … Continue reading 1.0 Network Fundamentals. 20%. 1.4 Identify interface and cable issues (collisions, errors, mismatch duplex, and/or speed) →

1.0 Network Fundamentals. 20%. 1.3 Compare physical interface and cabling types. 1.3.c Concepts of POE.

POE, or power over ethernet, is a technology that allows devices that require dc voltage to receive their power over ethernet cabling. Switches with POE capability use the copper cabling to deliver ethernet connectivity but also the power that is required, for devices such as wireless access points and voice over ip phones. Throughout the … Continue reading 1.0 Network Fundamentals. 20%. 1.3 Compare physical interface and cabling types. 1.3.c Concepts of POE. →

1.0 Network Fundamentals.20%. 1.3 Compare physical interface and cabling types 1.3.b Connections (Ethernet shared media and point-to-point)

Connections of ethernet shared media and point-to-point. When ethernet networking was in the beginning stages, coax was used and all the computers connected or "tapped" into the coax with another coax cable. The nics had a bnc connector. This was a shared media. After that, network hubs were used. This allowed the use of unshielded … Continue reading 1.0 Network Fundamentals.20%. 1.3 Compare physical interface and cabling types 1.3.b Connections (Ethernet shared media and point-to-point) →

1.0 Network Fundamentals. 20%. 1.3 Compare physical interface and cabling types. 1.3.a Single-mode fiber, multimode fiber, copper.

In network engineering we use media to connect things together. There are basically 3 kinds of media, fiber, copper and wireless. Fiber media is made from glass or plastic. Back in the day, when I first started running fiber, there was one manufacturer, which was Corning. Now there are several more. Fiber optic cable uses … Continue reading 1.0 Network Fundamentals. 20%. 1.3 Compare physical interface and cabling types. 1.3.a Single-mode fiber, multimode fiber, copper. →

1.0 Network Fundamentals. 20%. 1.2 Describe characteristics of network topology architectures. 1.2.f On-premises and cloud.

Explain the role and function of network components. On premises, is how everything used to be. An organization would have a data center or server room where all the servers were housed and connected to the network. Gradually, cloud networking started becoming popular. Cloud networking is a broad term and there are different varieties. The … Continue reading 1.0 Network Fundamentals. 20%. 1.2 Describe characteristics of network topology architectures. 1.2.f On-premises and cloud. →

1.0 Network Fundamentals. 20%. 1.2 Describe characteristics of network topology architectures. 1.2e Small office/home office (SOHO)

Explain the role and function of network components. A small office/home office is a remote site that connects to the HQ with a WAN. It will be a small representation of an enterprise network, with a border router, firewall, and local area network, where the endpoints connects to the network. See below: The modem/border router/firewall … Continue reading 1.0 Network Fundamentals. 20%. 1.2 Describe characteristics of network topology architectures. 1.2e Small office/home office (SOHO) →