CompTIA A+ 220-1001 Practice Test 5

A unique WLAN identifier (a.k.a. wireless network name) is called a(n):

SSID

Which device improves network performance by dividing a given network segment into separate collision domains?

Switch

In addition to its native routing functionality, a SOHO router is an all-in-one device that can serve the same purposes as many other devices. It can provide the functionality of a network switch and an Access Point (AP). A SOHO router can also provide extensive network configuration options that include a DHCP, firewall, and wired/wireless security settings.

True

DHCP runs on:

UDP port 67 UDP port 68

An infrastructure device designed for connecting wireless/wired client devices to a network is known as a(n):

Access Point (AP)

Network connections implemented with the use of a cable modem take advantage of:

Cabling that carries TV signals Coaxial cabling Shared bandwidth

Which of the following describe characteristics of DSL modems?

Dedicated bandwidth Twisted-pair copper cabling Telephone lines

Transmission Control Protocol (TCP) is an example of a connectionless protocol. Because TCP doesn't support a three-way handshake while establishing a network connection, it is referred to as an unreliable or best-effort protocol. True or False?

False

User Datagram Protocol (UDP) is a connection-oriented protocol using a three-way handshake, a set of initial steps required to establish a network connection. UDP 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 or False?

False

Software or hardware that checks information coming from the Internet and either blocks it or allows it to pass through depending on the applied configuration settings is called:

Firewall

What are the characteristic traits of a network switch?

Forwarding decisions made in hardware (ASIC) Typically capable of connecting more network segments than bridge (more physical ports) Sometimes referred to as multiport bridge Newer and more effective type of network device in comparison to network bridge

Which of the following describe the features of a network bridge?

Forwarding decisions made in software Typically capable of connecting fewer network segments than switch (fewer physical ports) Older and less effective type of network device in comparison to network switch

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

Hub

Which of the following is a dedicated device designed to supply power to PoE equipment?

Injector

Which of the following acronyms is used in an emerging field of new technologies, such as wearable tech or home automation?

IoT

TCP port 389 is the default network port for:

LDAP

A network switch with configuration features that can be modified via a user interface is a:

Managed switch

Which of the following is a computer hardware component designed to enable network access?

NIC

A type of technology that enables sending data over wiring used for transmission of electrical power is known as:

PLC

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

Patch panel

Which of the following acronyms describes using a single twisted-pair Ethernet cable to carry both data and electrical power?

PoE

Which of the following is a simple network device that amplifies a received signal so it can be transmitted over greater distance without loss of quality?

Repeater

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

Router

An SNMP Agent receives requests on UDP port:

161

An SNMP management station receives SNMP notifications on which of the following UDP ports?

162