WGU C172 Network and Security Foundations (WGUC172)

Firewall - -A part of a computer system or network designed to block unauthorized access while permitting outward communication. Stateful Inspection Firewall - -The inbound and outbound data packets are compared to determine if a connection should be allowed. Proxy Server - -The client gets access to the network via the ____________________________. This step is used to authenticate the user, establish the session, and set policies. Packet Filtering Firewall - -Can also limit information m...

It is a network of users that share computer resources in a limited area. - -LAN Local Area Network - -LAN How are Local Area Networks defined? - -In terms of protocol and the topology used for accessing the network. A set of rules established for users to exchange information - -Protocol The network architecture used to interconnect the networking equipment. - -Topology What are the most common topologies for LANs? - -Ring, Bus, and Star Uses a token that is placed in the data channel an...

TCP/IP (Transmission Control Protocol/Internet Protocol) - -A set of protocols made up of four layers (Application, Transport, Network, Network Interface Layer) used to connect network devices to each other Network Interface Layer (TCP/IP) - -TCP/IP model layer that establishes how data should be physically sent through the network. Ethernet In conjunction with layers 1 PHYSICAL and 2 DATA LINK Network Layer (TCP/IP) - -TCP/IP model layer that defines the logical transmission protocols fo...

Which OSI(Open Systems Interconnection model) layer is related to the function of the IP protocol suite? Network Which OSI(Open Systems Interconnection model) layer is responsible for organizing how bits are passed over the physical layer between devices within the same collision domain? Data link Which OSI(Open Systems Interconnection model) layer would define the scope of a protocol that makes sure packets of data are received correctly and resends them if they are not? Transport Whic...

A very popular intrusion approach thanks to its success rate is what? - -Social Engineering The physical architecture of a computer network is known as its ____. - -Topologies The 802.11 wireless LAN uses what in order to identify the wireless traffic that is permitted to connect? - -SSID PING uses ____to verify a network connection. - -ICMP Which of the following is not a function of a bridge? - -To forward traffic based on a layer 3 address You have a network ID of 192.168.55.0 and you n...

TCP/IP - -Known as Transmission Control Protocol/internet protocol and is a set of protocols used to connect network devices to each other Application Layer (TCP/IP) - -TCP/IP layer that is responsible for the communication protocols between nodes, such as HTTP, SSH, and NTP Transport Layer (TCP/IP) - -TCP/IP layer that is responsible for the end-to-end transport of data, such as TCP and UDP Network Layer (TCP/IP) - -TCP/IP layer that defines the logical transmission protocols for the whol...

In TCP/IP model,____layer processes requests from hosts to ensure a connection is made to the appropriate port - -application The binary value for the decimal number 49 is - - Decimal equivalent of is - -37 Decimal equivalent of is - -170 Decimal equivalent of is - -240 Binary equivalent of 120 is - - Private IP addresses can be used on the Internet - -FALSE The IPv4 is typically expressed in____format for the user - -dotted decimal The IP address 192.168.12.2 is an example of____for...

Which of the following are advantages of optical communication links? - -1. Security 2. Extremely wide bandwidth 3. Elimination of crosstalk What is the "two deep" rule relative to optical networking? - -This means that a building should only have the main distribution and the intermediate distribution that feeds the horizontal distribution to the work area What is the name of the optical-to-fiber interface used at 1 gigabit? - -GBIC The broadening of a pulse due to different propagatio...

Asset - -A person, device, location, or information that SecOps aims to protect from attack. Attack - -An action taken by a threat that exploits a vulnerability that attempts to either block authorized access to an asset, or to gain unauthorized access to an asset. Risk - -The potential of a threat to exploit a vulnerability via an attack. SecOps (IT security operations) - -A discipline responsible for protecting assets by reducing the risk of attacks. Threat - -Something or someone that c...

OSI Model Layer 1 - -Physical The Physical layer represents the physical medium that connects the computers together. OSI Model Layer 2 - -Data Link represents how computers logically connect to the network. Protocols at Layer 2 define how computers can share access to a common medium, such as a wired or wireless network. This includes protocols such as 802.3 Ethernet and 802.11 Wi-Fi. OSI Model Layer 3 - -Network allows computers on different networks to exchange data. OSI Model Layer 4...