QUESTION: 73

Which of the following types of connectors is used by 1000BASE-TX gigabit ethernet?

RJ-59
RJ-45
BNC
LC

Answer(s): B

Explanation:

1000BASE-TX is an IEEE specification for Ethernet. This is commonly known as Gigabit Ethernet. It supports the maximum speed of 1000Mbps and the maximum cable length of 100 meters. 1000BASE-TX uses Category 5 UTP cables and RJ-45 connectors. RJ-45 is a type of connector similar to an RJ-11 telephone connector, but it is larger in size because it has eight conductors.
Answer option C is incorrect. BNC stands for British Naval Connector. It is a connector used to connect 10Base2 cable network to Network Interface Card (NIC).

Answer option D is incorrect. The LC connector was developed to meet the need for small and easier-to-use fiber optic connectors. The LC connector reduces space required on panels by 50%.
Answer option A is incorrect. RJ-59 connector is used in cable TV's coaxial cable.

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QUESTION: 74

Which of the following networks is designed to provide connectivity between a computer and its peripheral devices for the flexible productivity of a single user?

Answer(s): B

Explanation:

A personal area network (PAN) is a computer network used for communication among computer devices (including telephones and personal digital assistants) close to one's person. The reach of a PAN is typically a few meters.
A PAN can be used for communication among the personal devices themselves (intrapersonal communication), or for connecting to a higher level network and the Internet.
Answer option D is incorrect.
A Metropolitan Area Network (MAN) is a network that interconnects users with computer resources in a geographic area or region larger than that covered by even a large Local Area Network (LAN) but smaller than the area covered by a Wide Area Network (WAN). The term is applied to the interconnection of networks in a city into a single larger network (which may then also offer efficient connection to a wide area network). It is also used to mean the interconnection of several local area networks by bridging them with backbone lines. The latter usage is also sometimes referred to as a campus network.
A MAN usually interconnects a number of local area networks (LANs) using a high-capacity backbone technology, such as fiber-optical links, and provides up-link services to wide area networks and the Internet. Examples of metropolitan area networks of various sizes can be found in the metropolitan areas of London, England; Lodz, Poland; and Geneva, Switzerland. Large universities also sometimes use the term to describe their networks.
A recent trend is the installation of wireless MANs.
Answer option A is incorrect.
A campus area network (CAN) is a computer network that interconnects local area networks throughout a limited geographical area, such as a university campus, a corporate campus, or a military base. It could be considered a metropolitan area network that is specific to a campus setting.
A campus area network is, therefore, larger than a local area network but smaller than a wide area network. The term is sometimes used to refer to university campuses, while the term corporate area network is used to refer to corporate campuses instead. Although not considered a wide area network, a CAN extends the reach of each local area network within the campus area of an organization. In a CAN, the buildings of a university or corporate campus are interconnected using the same types of hardware and networking technologies that one would use in a LAN. In addition, all of the components, including switches, routers, and cabling, as well as wireless connection points, are owned and maintained by the organization.
Answer option C is incorrect. Local Area Network (LAN) represents a network that covers a very close geographic area, such as a floor of a building, a building itself, or a campus environment. LAN is a high-speed network that connects computers, printers, and other network devices together. The media types used in LANs include Ethernet, Fast Ethernet (FE), Gigabit Ethernet (GE), Token Ring, and FDDI.
A LAN may include servers, workstations, hubs, bridges, switches, routers, gateways, firewalls, etc.

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QUESTION: 75

Which of the following software can be used to protect a computer system from external threats (viruses, worms, malware, or Trojans) and malicious attacks? Each correct answer represents a part of the solution. Choose all that apply.

Burp Suite
Employee monitoring software
Antivirus
Firewall

Answer(s): C,D

Explanation:

Anti-Virus software is used to prevent, detect, and remove malware, including computer viruses, worms, and trojan horses. Such programs may also prevent and remove adware, spyware, and other forms of malware. Anti-Virus software is a class of program that searches your hard drive, floppy drive, and pen drive for any known or potential viruses. The market for this kind of program has expanded because of Internet growth and the increasing use of the Internet by businesses concerned about protecting their computer assets. Popular Anti-Virus packages are as follows:
Popular Anti-Virus packages are as follows: Bit Defender Anti-Virus McAfee Virus ScanKaspersky Anti-Virus F-Secure Anti-Virus Symantec Norton Anti-Virus Panda Titanium Anti-Virus Avira Anti- Virus Avast Anti-Virus Trend Micro Anti-Virus Grisoft AVG Anti-Virus ESET Nod32 Anti-Virus Webroot Anti-Virus Quick Heal Anti-Virus eTrust EZ Anti-Virus ZoneAlarm Anti-Virus A firewall is used to protect a network from external attacks by hackers. It prevents direct communication between

computers in the network and the external computers through the Internet. Instead, all communication is done through a proxy server outside the organization's network, which decides whether or not it is safe to let a file pass through.
Answer option B is incorrect. Employee monitoring software is a means of employee monitoring, and allows company administrators to monitor and supervise all their employee computers from a central location. It is normally deployed over a business network and allows for easy centralized log viewing via one central networked PC. Some examples of these software are Activity Monitor, Imonitor Employee Activity Monitor, Chily Employee Activity Monitor, Guardian Monitor Professional, etc.
Answer option A is incorrect.

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QUESTION: 76

John works as a Network Administrator for NetPerfect Inc. The company has a Windows-based network. John has been assigned a project to build a network for the sales department of the company. It is important for the LAN to continue working even if there is a break in the cabling.
Which of the following topologies should John use to accomplish the task?

Star
Ring
Mesh
Bus

Answer(s): C

Explanation:

Mesh network topology is a type of physical network design where all devices in a network are connected to each other with many redundant connections. It provides multiple paths for the data traveling on the network to reach its destination. Mesh topology also provides redundancy in the network. It employs the full mesh and partial mesh methods to connect devices. In a full mesh topology network, each computer is connected to all the other computers. In a partial mesh topology network, some of the computers are connected to all the computers, whereas some are connected to only those computers with which they frequently exchange data. Mesh Topology:

Answer option D is incorrect. Bus topology is a type of physical network design where all computers in the network are connected through a single coaxial cable known as bus. This topology uses minimum cabling and is therefore, the simplest and least expensive topology for small networks. In this topology, 50 ohm terminators terminate both ends of the network.
A Bus topology network is difficult to troubleshoot, as a break or problem at any point along the cable can cause the entire network to go down. Bus Topology:
Answer option A is incorrect. Star topology is a type of physical network design where each computer in the network is connected to a central device, called hub, through an unshielded twisted-pair (UTP) wire. Signals from the sending computer go to the hub and are then transmitted to all the computers in the network. Since each workstation has a separate connection to the hub, it is easy to troubleshoot. Currently, it is the most popular topology used for networks.
Star Topology:

Answer option B is incorrect. Ring topology is a type of physical network design where all computers in the network are connected in a closed loop. Each computer or device in a Ring topology network acts as a repeater. It transmits data by passing a token around the network in order to prevent the collision of data between two computers that want to send messages at the same time. If a token is free, the computer waiting to send data takes it, attaches the data and destination address to the token, and sends it.
When the token reaches its destination computer, the data is copied. Then, the token gets back to the originator. The originator finds that the message has been copied and received and removes the message from the token. Now, the token is free and can be used by the other computers in the network to send data. In this topology, if one computer fails, the entire network goes down.

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