A+ Certification Exam 220-1101 Practice Test 4

An infrastructure device designed for connecting wireless/wired client devices to a network is commonly referred to as:

Access Point (AP)

Which of the following answers refer to the characteristic features of cable modems? (Select 3 answers)

Cabling that carries TV signals Coaxial cabling Shared Bandwidth

Which of the answers listed below apply to DSL modems? (Select 3 answers)

Dedicated bandwidth Twisted-pair copper cabling Telephone lines

Examples of connectionless protocols include: (Select 2 answers)

Dynamic Host Configuration Protocol (DHCP) - is a network protocol that is used to configure network devices to communicate on an IP network. A DHCP client (UDP Port 67) uses the DHCP protocol to acquire configuration information, such as an IP address, a default route, and one or more DNS server addresses from a DHCP server (UDP Port 68) Trivial File Transfer Protocol (TFTP) - (a simple lockstep File Transfer Protocol which allows a client to get a file from or put a file onto a remote host. UDP Port 69)

Which of the answers listed below refer to common applications that make use of TCP? (Select 3 answers)

File Transfer Email Communication Web browsing

Which of the following answers refers to a software or hardware that monitors network traffic and depending on the configuration settings applied to each data packet either blocks it or allows it to pass through?

Firewall

A network segment utilizing only this type of device is the most prone to network performance degradation due to large number of network collisions.

Hub

The disadvantage from using this device results from the fact that any incoming signal on any of its ports is re-created and sent out on any connected ports which has a negative impact on network performance.

Hub

Which of the following answers refers to a dedicated device designed for supplying power over Ethernet cabling?

Injector

Which IEEE standard implements PoE+?

Institute of Electrical and Electronics Engineers (IEEE)802.3at - Type 2/2-pair can deliver up to 30 watts over Cat 5 cables with 25.5 watts available to devices (Video IP phones, alarm systems, pan/tilt/zoom cameras)

A type of layer 2 network switch with configuration features that can be modified through a user interface is known as:

Managed Switch

Which of the following answers refers to a computer's hardware component designed for enabling network access?

Network Interface Card (NIC)

Which type of fiber-optic equipment can be found at a demarc? (marks the point where communications facilities owned by one organization interface with that of another organization. In telephone terminology, this is the interface between customer-premises equipment and network service provider equipment.)

Optimal Network Terminal (ONT) - It is the device that communicates with your Internet service provider (ISP) on a fiber-optic Internet network.

A simple device consisting of multiple connector blocks and ports used for cable management is known as:

Patch Panel

The IEEE 802.3bt standard implements: (Select all that apply)

PoE++ - Type 3/4-pair : Video conferencing equipment, multi-radio wireless access points 4PPoE - Type 4 /4-pair: Laptops, flat screens

A solution that allows to supply electricity over standard Ethernet cables is known as: (Select 2 answers)

Power over Ethernet (PoE) - is an evolving technology designed to simultaneously provide power and data connectivity over existing Ethernet cable, eliminating the need for running separate and expensive power cables, AC electrical outlets, etc. Institute of Electrical and Electronics Engineers (IEEE)802.3af - Type 1 /2-pair supported devices : Static surveillance cameras, VoIP phones, wireless access points (WiFi)

A network technician uses Remote Desktop Protocol (RDP) client on their Windows OS to remotely troubleshoot a problem on another Windows machine. Which of the following ports needs to be opened for the built-in Windows RDP server to allow this type of network connection?

TCP port 3389

(True or False) - Transmission Control Protocol (TCP) is a connection-oriented protocol using a three-way handshake, which is a set of initial steps required to establish network connection. TCP supports retransmission of lost packets, flow control (managing the amount of data that is being sent), and sequencing (rearranging packets that arrived out of order).

True

(True or False) - User Datagram Protocol (UDP) is an example of a connectionless protocol. Because UDP does not support a three-way handshake while establishing a network connection, it is referred to as an unreliable or best-effort protocol.

True

Which of the following answers refer(s) to common applications of UDP? (Select all that apply)

Video conferencing Live streaming Online gaming Voice over IP (VoIP)

A device designed to filter and transfer data packets between dissimilar types of computer networks is called:

Router

Which of the following protocols runs on TCP port 445?

SMB (Server Message Block) & CIFS (Common Internet File System)

Which of the following answers refer to connection-oriented protocols? (Select 2 answers)

Secure Shell (SSH) - TCP 22 Hyper Text Transfer Protocol over TLS/SSL (HTTPS) - TCP 443

Which of the answers listed below refers to a technology designed to simplify network infrastructure management?

Software Defined Networking (SDN)

Which of the answers listed below refers to a data-link layer device designed to forward frames between network segments?

Switch