NTA Practice Exam Questions and Answers(A+ Solution guide)

Which of the following devices is necessary to create a WAN? - Answer-A router Which protocol is connection-oriented, and therefore uses a sequencing function to open up a port? - Answer-TCP Considering the differences between LANs and WANs, which statement is true? - Answer-A LAN is a group of networked computers within a confined geographic area. You have noted a security threat to your company's network computers and telephony devices, so several employees are attempting to minimize damage. They are in a room that has multiple redundant connections and the ability to remotely control remote servers, workstations and network devices. What is the name for this type room? - Answer-Network Operations Center (NOC) You are traveling to a corporate office outside your country. You will need to connect to the corporate network. Which of the following will you most likely require to use your computer? - Answer-A plug adapter In the TCP/IP suite of protocols, which protocol is responsible for providing addresses for each computer? - Answer-IP Which of the following is used in packet-based networks to ensure that a packet is valid? - AnswerThe Cyclical Redundancy Check (CRC) Which of the following monitors traffic and creates a barrier between a trusted network and an untrusted network? - Answer-Firewall Which statement best describes the functionality of a Voice over IP (VoIP) network? - Answer-Voice calls are sent over a packet-based network that uses TCP/IP. You are working with an Internet Service Provider (ISP) in London, England. You need to provide access to a Web server based in Stratford-Upon-Avon. You require a data transfer rate of at least 4.3 Mbps. Which service would you choose? - Answer-E2Tim's company has a server-based network. Server-based networks typically contain centralized network resources, which are usually not available on peer-to-peer (P2P) networks. Which of the following examples describes a server-based network? - Answer-Three network clients connecting to a file server Jimmy is distributing a large video game file using BitTorrent. First, he uploads the initial file and makes it available via a central server called a tracker. Other users can then connect to the tracker and download the file. Each user who downloads the file makes it available to other users to download. Using BitTorrent significantly reduces Jimmy's hardware and bandwidth resource costs. BitTorrent is an example of a: - Answer-peer-to-peer (P2P) network. What is a local area network (LAN)? - Answer-A network that uses a switch to connect workstations to each other Malcolm works in the IT department of a large company. Its corporate network is spread out over several cities, and various departments are divided into subnetworks that are connected using routers. What type of network does Malcolm's company use? - Answer-Wide area network (WAN) An end user visited a Web site and downloaded a page with several accompanying images. Which of the following is an element of TCP/IP used to download these files and images to the end user? - Answer-Hypertext Transfer Protocol (HTTP) Which network topology connects network nodes through a central device, usually a hub or a switch? - Answer-Star What is another term for a high-speed backbone network connection on the Internet? - AnswerInternet Exchange Point (IXP) Which of the following is a generic model used to describe network communications so that properly created packets can be sent on a network? - Answer-The OSI/RM Which of the following is an interior routing protocol? - Answer-Open Shortest Path First (OSPF) You want to support a Gigabit Ethernet network, and you have the option of installing new cable. The portion of network you are installing will probably reach transmission speeds between 9 Gbps and 9.5 Gbps with cable segments over 100 meters. Which cable grade is the minimum standard you should install? - Answer-Class FWhich choice lists the elements required to communicate on the Internet? - Answer-An IP address, a subnet mask or subnet prefix length, a default gateway, and a DNS server