CompTIA A+ Certification Practice Test 15 (Exam 220-901)

DHCP

A network protocol providing an alternative solution to the manual assignment of IP addresses is called: DNS SNMP NAT DHCP

Channel

A portion of the available Radio Frequency (RF) band allocated for wireless communication is known as: Scope Channel Service set Layer

SNMP

A protocol used in network management systems for monitoring network-attached devices is known as: SMTP ICMP SNMP IPsec

TKIP

A security protocol introduced in order to strengthen existing WEP implementations without requiring the replacement of legacy hardware is known as: PEAP TKIP CCMP WPA2

Port forwarding

A server with private IP address has been set up to handle requests from an outside (public) network. Which of the solutions listed below would enable its function? Port triggering Port bonding Port forwarding Port mirroring

Channel overlapping

A situation in which multiple channels share the frequency band causing interference and performance degradation for devices operating on channels that are too close to each other is known as: Cross-talk Channel overlapping Collision Channel bonding

WPA2

AES-based encryption mode is a characteristic feature of: WEP WPA2 PAP WPA

True

Server Message Block (SMB) and Common Internet File System (CIFS) are examples of network protocols used for providing shared access to files, directories, and devices. True False

False

User Datagram Protocol (UDP) is a connection-oriented protocol that requires a set of initial steps in order to establish connection (three-way handshake), 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 False

WPA2

Which of the following wireless encryption schemes offers the highest level of protection? WEP WPA2 WAP WPA

True

A common example of channel overlapping in wireless networking would be the 2.4 GHz band used in 802.11, 802.11b, 802.11g, and 802.11n networks, where the 2.401 - 2.473 GHz frequency range is used for allocating 11 channels, each taking up a 22-MHz portion of the available spectrum. Setting up a wireless network to operate on a non-overlapping channel (1, 6, and 11 in this case) allows multiple networks to coexist in the same area without causing interference. True False

HTTPS IPsec SSH

Examples of secure network protocols offering traffic encryption include: (Select 3 answers) FTP HTTPS Telnet HTTP IPsec SSH

Directory access protocol

LDAP is an example of: Authentication protocol Address resolution protocol Directory access protocol File exchange protocol

-Multiple Input / Multiple Output (MIMO) -2.4 GHz frequency band -5.0 GHz frequency band -Maximum data signaling rate of 600 Mbps -Carrier Sense Multiple Access / Collision Avoidance (CSMA/CA) network access method

The characteristic features of the IEEE 802.11n wireless standard amendment include: (Select all that apply) -Multiple Input / Multiple Output (MIMO) -Maximum data signaling rate of 54 Mbps -2.4 GHz frequency band -Carrier Sense Multiple Access / Collision Detection (CSMA/CD) network access method -5.0 GHz frequency band -Multi-User Multiple Input / Multiple Output (MU-MIMO) -Maximum data signaling rate of 600 Mbps -Carrier Sense Multiple Access / Collision Avoidance (CSMA/CA) network access method

True

The function of the NetBT protocol is to allow NetBIOS services to be used over TCP/IP networks. True False

False

Transmission Control Protocol (TCP) is an example of a connectionless protocol. TCP doesn't support three-way handshake (thus it is also referred to as unreliable or best-effort protocol). True False

-Maximum data signaling rate of 54 Mbps -Carrier Sense Multiple Access / Collision Avoidance (CSMA/CA) network access method -2.4 GHz frequency range

What are the characteristics of the IEEE 802.11g wireless standard amendment? (Select all that apply) -Carrier Sense Multiple Access / Collision Detection (CSMA/CD) network access method -Maximum data signaling rate of 54 Mbps -Carrier Sense Multiple Access / Collision Avoidance (CSMA/CA) network access method -2.4 GHz frequency range -Maximum data signaling rate of 11 Mbps -5.0 GHz frequency range

-Maximum data signaling rate of 54 Mbps -5.0 GHz frequency band -Carrier Sense Multiple Access / Collision Avoidance (CSMA/CA) network access method

Which of the answers listed below refer(s) to the characteristic feature(s) of the IEEE 802.11a wireless standard amendment? (Select all that apply) -Maximum data signaling rate of 54 Mbps -5.0 GHz frequency band -Carrier Sense Multiple Access / Collision Avoidance (CSMA/CA) network access method -2.4 GHz frequency band -Maximum data signaling rate of 11 Mbps -Carrier Sense Multiple Access / Collision Detection (CSMA/CD) network access method

-2.4 GHz frequency range -Maximum data signaling rate of 11 Mbps -Carrier Sense Multiple Access / Collision Avoidance (CSMA/CA) network access method

Which of the following answers list(s) the feature(s) of the IEEE 802.11b wireless standard amendment? (Select all that apply) -Maximum data signaling rate of 54 Mbps -5.0 GHz frequency range -Carrier Sense Multiple Access / Collision Detection (CSMA/CD) network access method -2.4 GHz frequency range -Maximum data signaling rate of 11 Mbps -Carrier Sense Multiple Access / Collision Avoidance (CSMA/CA) network access method

FTP AFP

Which of the following answers refer(s) to file sharing network protocol(s)? (Select all that apply) RIP FTP NNTP AFP SNMP

SSH

Which of the following answers refers to a cryptographic network protocol for secure data communication, remote command-line login, remote command execution, and other secure network services between two networked computers? Telnet SSH Bcrypt TFTP

-5.0 GHz frequency band -Carrier Sense Multiple Access / Collision Avoidance (CSMA/CA) network access method -Multi-User Multiple Input / Multiple Output (MU-MIMO)

Which of the following answers refers(s) to the feature(s) of the IEEE 802.11ac wireless standard amendment? (Select all that apply) -Data signaling rate of up to 600 Mbps -5.0 GHz frequency band -Carrier Sense Multiple Access / Collision Detection (CSMA/CD) network access method -Carrier Sense Multiple Access / Collision Avoidance (CSMA/CA) network access method -Multi-User Multiple Input / Multiple Output (MU-MIMO) -2.4 GHz frequency band

SLP

Which of the protocols listed below is used for automated discovery of networked services on Local Area Networks (LANs)? SMB AFP CIFS SLP

SSH

Which of the protocols listed below was designed as a secure replacement for Telnet? CHAP FTP SNMP SSH

WEP

Which of the wireless security standards listed below has been deprecated in favor of newer standards due to known vulnerabilities resulting from implementation flaws? AES WPA2 PEAP WEP CCMP