Voice or data computers, network interfaces, and transmission medium C. Modems, transmission links, and wireless access points D. TCP/IP software, modems, and transmission links Correct! The correct answer is: B. âA network consists of two or more connected computersâ (Laudon & Laudon, 2011, p. 194). âBasic network components include computers, network interfaces, a connection medium, network operating system software, and either a hub or a switchâ (p. 225). Networking and telecommunications technology, consisting of both physical devices and software, links the various pieces of hardware and transfers data from one physical location to another. 2.
A distinct physical circuit dedicated to directly connecting devices, such as multiplexers, PBXs, and host computers. A dedicated circuit, also known as a leased line, can be provisioned over a private network comprising facilities owned by the end user organization, although it more typically is in the form of a leased line provisioned over a public network. What layer of the TCP/IP model do routers belong in? NETWORK LAYER 3 What is the point called where the Smart Jack on the Customer side interfaces with the Smart Jack on the Telco side? DEMARC What is SONET WAN technology?
2. Which of the following standalone devices can be found near the Internet edge, with a primary purpose of providing some type of network security between an enterprise or SOHO TCP/IP network and the Internet? (Choose two answers.) a. LAN access point b. IPS c. Analog modem d. Firewall Answer: B, D. A firewall normally sits inline, in the packet-forwarding path, choosing which packets to allow and disallow. An intrusion prevention system (IPS) can sit inline or outside the packet-forwarding path, reporting on complex attacks based on combinations of events.
2. Which layer of the TCP/IP model processes requests from hosts to make sure a connection is made to the appropriate port? i. Application Layer 3. What are well known ports?
Step 2: If ARP resolution is not there in local cache, the source machine will generate an Address Resolution Protocol (ARP) request message, it puts its own data link layer address as the Sender Hardware Address and its own IPv4 Address as the Sender Protocol Address. It fills the destination IPv4 Address as the Target Protocol Address. The Target Hardware Address will be left blank, since the machine is trying to find that. Step 3: The source broadcast the Address Resolution Protocol (ARP) request message to the local network. Step 4: The message is received by each device on the LAN since it is a broadcast.
NT1210 Research Paper From what I gathered about “Layer 2 switches” is that the Layer 2 switches use a MAC address from a host NIC card. This makes it to decide where to “forward frames”. Also Layer 2 is a hardware-based control. It uses “application-specific integrated circuits”, which provides “wire speed, high speed, low latency”. OIS layer 7 packets are called “layer 4-7 switches” these are like content switches, content service switches and web switches or application switches… Content switches are normally used for “load balancing” among server groups like on TCP/IP.
This link is above the Physical layer it is responsible for end-to-end validity of what is being transmitted. Datalink layer is divided into; two sub-layer which is Media Access Control (MAC) that determines the physical addressing of the host. The MAC addresses (physical device addresses) that communicate with other devices within the network. Then there is the Logical Link Control (LLC) sub layer. What it is responsible for is the synchronizing frames, error checking, and the flow control.
Pagers is wireless telecommunications devices that receives and displays numeric or text messages, or announces voice messages. A paging system alerts a pager (or group of pagers) by a transmitting information over an RF channel. VOIP(voice over IP) phones uses Voice over Internet Protocol technologies for placing and transmitting telephone calls over an IP network, such as the Internet, instead of the traditional public switched telephone network. Skype/Face times is a voice-over-IP service and instant messaging client. The service allows users to communicate with peers by voice using a microphone, video by using a webcam, and instant messaging
The IPX (internet packet exchange) shows up in the third layer of the model. In which is if a device that needs to have communication to it or in a different network then the IPX takes that information and sends it the designation throughout the network. The SPX (Sequenced Packet Exchange) protocol which as the same as IPX is also on layer three so the network is more reliable, datagram connection. The network core Protocol (NCP) is a server routine that is degned to process application requests from Netware (WIKIPEDIA.com). Some of the things that NCP does include file access, printer access, security.
Question 15 The Wide Area Network (WAN) design below represents what type of fault-tolerant network design? Question 16 Which QoS design consideration is incorrect? Question 17 Which term is best described by the following definition: “Both NICs are active at the same time, and they each have their own MAC address”? Question 18 Which of the following is one of the two modes of Network Interface Card (NIC) redundancy? (Choose 2) Question 19 The ________ command can be used to display information about current sessions, including source and destination IP addresses and port numbers.