Network+ Practice

What are the characteristic traits of a network switch? (Select all that apply)

- Makes forwarding decisions in hardware (ASIC) - Typically capable of connecting more network segments than bridge (more physical ports) - Sometimes referred to as multiport bridgeNewer and more effective type of network device in comparison to network bridge

Which of the following answers describe the features of a network bridge? (Select 3 answers)

- Makes forwarding decisions 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 characteristic features of the IEEE 802.11n wireless standard include: (Select all that apply)

2.4 GHz frequency band5.0 GHz frequency band, Maximum data signaling rate of up to 600 Mbps, Carrier Sense Multiple Access / Collision Avoidance, (CSMA/CA) network access method, Multiple Input / Multiple Output (MIMO)

Which of the following answers refer to the IEEE 802.11b wireless standard? (Select 3 answers)

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

The IEEE 802.11a standard specifies a channel bandwidth of:

20 MHz

The IEEE 802.11n standard specifies available channel bandwidth options of: (Select 2 answers)

20 MHz, 40 MHz

Which of the answers listed below refers to a channel bandwidth used in 802.11b networks?

22 MHz

Which of the DNS database records listed below returns a 32-bit IP address?

A

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

Which of the following answers refers to a connector type not used with copper cabling? RJ-11/RJ-45 BNC MT-RJ DB-9/DB-25 F-type

MT-RJ

Which of the following DNS database records maps a domain name to a list of mail servers for that domain?

MX

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 answers listed below illustrates the difference between passive and active security breach response?

IDS vs. IPS

Which IEEE standard provides the implementation basis for most modern WLANs?

IEEE 802.11

Which of the following answers refers to a method for managing a network's IP address space?

IPAM

Which of the answers listed below refer to methods for creating secure connections between clients and cloud service providers? (Select 3 answers)

IPsec, SSL/TLS encryption, VPN

The DNS database AAAA record creates a pointer that maps a hostname to:

IPv6 address

Which of the answers listed below refers to a short distance, line-of-sight technology used for example in home remote controls?

IR

Which of the answers listed below refers to a cloud computing delivery model in which clients, instead of buying all the hardware and software, purchase computing resources as an outsourced service from suppliers who own and maintain all the necessary equipment and software?

IaaS

What are the characteristic features of the 100BaseTX Ethernet standard? (Select 3 answers)

Maximum cable segment length of 100 meters Transfer rate of 100 Mbps over two-pair Cat 5 or better cable Twisted-pair copper cabling (Category 5 or higher)

What are the characteristic features of the 1000BaseT Ethernet standard? (Select 3 answers)

Maximum cable segment length of 100 meters Twisted-pair copper cabling (Cat 5 or higher) Uses all four pairs of wires in a cable for data transmission

Which of the answers listed below refer to the 1000BaseLX Ethernet standard? (Select 3 answers)

Maximum cable segment length of up to 5 km over single-mode fiber Fiber-optic cabling Maximum cable segment length of up to 500 m over multimode mode fiber

What are the characteristics of the IEEE 802.11g wireless standard? (Select 3 answers)

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

Which of the answers listed below refer to the characteristic features of the IEEE 802.11a wireless standard? (Select 3 answers)

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

A network link consisting of two dissimilar transmission medium types requires an intermediary device known as:

Media converter

What are the characteristic traits of GBIC? (Select all that apply)

Modular (hot swappable) interface Converts optical signals to electrical signals Converts electrical signals to optical signals Data transfer of 1 Gbps

DNS record that specifies a list of additional name servers on a domain is called:

NS

Which of the answers listed below refers to a common antenna type used as a standard equipment on most Access Points (APs) for indoor Wireless Local Area Network (WLAN) deployments?

Omnidirectional antenna

Which of the following statements describing the function of a DNS PTR record are true? (Select 2 answers)

PTR record resolves an IP address to a hostname for reverse lookups. The functionality provided by a PTR record is the opposite of A and AAAA DNS records.

Which of the following cloud service types would provide the best solution for a web developer intending to create a web app?

PaaS

An Ethernet straight-through cable is also commonly referred to as:

Patch cable

Which of the following answers refer to common cabling type used for connecting workstations to network devices? (Select 2 answers) Patch cable RG-59 cable Crossover cable RG-6 cable Straight-through cable

Patch cable Straight-through cable

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

Patch panel

A type of enclosed space in a building (such as the one between a dropped ceiling and the structural ceiling) used for air handling is commonly referred to as: Plenum Main Distribution Frame (MDF) HVAC system Intermediate Distribution Frame (IDF)

Plenum

Which WAP configuration setting allows for adjusting the boundary range of a wireless signal?

Power level controls

A type of cloud infrastructure available solely for a single organization is known as:

Private cloud

The duration of time a DHCP client can use an IP address dynamically assigned by the DHCP server is referred to as:

Lease

Which part of the AAA security architecture deals with the verification of the identity of a person or process?

Authentication

A type of Ethernet interface that automatically detects the required cable connection type (straight-through vs. crossover) and configures the connection appropriately is known as:

Auto MDI-X

A popular, short-range wireless technology used for connecting various personal devices in a WPAN is called:

Bluetooth

Which of the following answers refers to a bus topology network first developed for use in vehicles?

CAN

Which of the following answers refers to a security policy enforcement software tool or service placed between cloud service users and cloud applications?

CASB (Cloud access security broker)

Which of the following answers refers to a channel access method used in 3G cellular networks?

CDMA

Which of the DNS database records listed below allows multiple domain names to resolve to the same IP address?

CNAME

Which of the following answers refers to the minimum requirement for twisted-pair copper cabling in modern Ethernet networks?

Cat 5e

Which of the following answers refer to the RG-6 cabling specification? (Select 3 answers) Twisted-pair copper cabling Suitable for short-distance cable runs Used for analog video and CCTV installations Coaxial cabling Suitable for long-distance cable runs Used for cable television, satellite television and cable modems

Coaxial cabling Suitable for long-distance cable runs Used for cable television, satellite television and cable modems

What are the characteristics of the RG-59 cabling specification? (Select 3 answers) Coaxial cabling Suitable for short-distance cable runs Used for analog video and CCTV installations Twisted-pair copper cabling Suitable for long-distance cable runs Used for cable television, satellite television and cable modems

Coaxial cabling Suitable for short-distance cable runs Used for analog video and CCTV installations

Which of the following antenna types provide a 360-degree horizontal signal coverage? (Select 2 answers)

Dipole antenna, Omnidirectional antenna

Plenum-rated cabling features a fire-retardant jacket made of polyvinyl chloride (PVC). True False

False

In computer networking, a computer system or application that acts as an intermediary between another computer and the Internet is commonly referred to as:

Proxy

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

Router

A dedicated local network consisting of devices providing data access is called:

SAN

Which DNS records are used to protect a domain from being wrongfully identified as a source of email spam? (Select 2 answers)

SPF DKIM

Which DNS records are commonly used with the DNS TXT record? (Select 2 answers)

SPF, DKIM

Which DNS record specifies a host and port information that allow to find specific services on a network?

SRV

Examples of copper cabling types used in Ethernet networks include: (Select all that apply)

STP UTP Coax

A cloud computing service model offering remote access to applications based on monthly or annual subscription fee is called:

SaaS

A range of IP addresses that a DHCP server can lease out to DHCP clients is known as:

Scope

Which of the answers listed below refers to a channel access method used in 2G GSM networks?

TDMA

Which of the answers listed below refer to copper cabling termination specifications? (Select 2 answers) TIA/EIA 568a IEEE 802.3ab TIA/EIA 568b IEEE 802.3af

TIA/EIA 568a TIA/EIA 568b

An IPv4 packet header field that specifies how many more hops a packet can travel before being discarded is called:

TTL

Which of the following answers refers to a modular network device designed to provide a seamless link between different types of network interfaces (e.g. copper and fiber, or vice versa)?

Transceiver

A DHCP server's IP exclusion configuration option allows network administrators to remove a single IP address or a range of IP addresses from the pool of addresses being assigned automatically to the requesting DHCP client computers. IP exclusion prevents other DHCP clients from requesting an IP address statically assigned to other essential network hosts (e.g. servers, or a wireless printers) via DHCP reservation. True/False

True

A cloud delivery model consisting of two or more interlinked cloud infrastructures (private, community, or public) is referred to as a hybrid cloud. True/False?

True

A network device that apart from the function of an ordinary network switch can also provide additional functions at higher levels of the OSI reference model is known as a multilayer switch. True False

True

A special type of cabling with fire-retardant jacket placed inside the space between structural floor and dropped ceiling or inside walls is known as a plenum-rated cabling. True False

True

What is the function a DNS TXT record? (Select 2 answers)

Provides outside services with additional information about a domain, Not used to direct any traffic

Long Term Evolution (LTE) is a wireless communications standard for mobile devices and wireless hotspots. LTE offers significant improvements in terms of speed when compared to the older generation of 3G cellular networks. LTE and its later revision LTE-Advanced (LTE-A) are often marketed as 4G standards. True or false?

True

Multiple Input / Multiple Output (MIMO) is a wireless technology that allows for significant increase in data throughput due to the use of multiple antennas and multiple data streams. True/False

True

Networked clients not residing on the same subnet as the DHCP server can still obtain an IP address from the server through a DHCP relay agent (a.k.a. IP helper). True/False

True

What are the characteristic features of the RJ-45 connector? (Select 2 answers) Used with telephone cabling Coaxial cabling connector Used with Ethernet network cabling Copper cabling connector Fiber-optic cabling connector

Used with Ethernet network cabling Copper cabling connector

Which of the answers listed below refer to the RJ-11 connector? (Select 2 answers) Used with telephone cabling Copper cabling connector Used with Ethernet network cabling Fiber-optic cabling connector Coaxial cabling connector

Used with telephone cabling Copper cabling connector

Which of the following answers refers to a dedicated device designed to manage encrypted connections established over an untrusted network, such as the Internet?

VPN concentrator

Which of the following answers lists an example of a modern network bridging device?

WAP

A type of network device used for improving wireless signal strength within homes and small offices is called:

Wireless range extender

The process of planning and designing new WLANs for optimal performance, security and compliance typically involves:

Wireless site survey

Which of the answers listed below refer to highly directional antenna type used for long-range point-to-point bridging links? (Select 3 answers)

Yagi antenna, Dish antenna, Parabolic antenna

Which of the answers listed below refer to the 10GBaseT Ethernet standard? (Select 3 answers)

10 Gbps transfer rate over a maximum cable segment length of 55 meters (Cat 6 cable) 10 Gbps transfer rate over a maximum cable segment length of 100 meters (Cat 6A and Cat 7 cable) Twisted-pair copper cabling

Which of the answers listed below refer to the characteristics of multimode fiber optics? (Select 3 answers) Uses laser as the source of light Transmission distances of up to 2 km More expensive than single-mode fiber optics Transmission distances of up to 100 km Less expensive than single-mode fiber optics Uses LED as the source of light

-Transmission distances of up to 2 km -Less expensive than single-mode fiber optics -Uses LED as the source of light

Which of the answers listed below refer(s) to UTP cabling? (Select all that apply) Twisted-pair copper cabling Used in Ethernet networks and telephone systems Low cost and ease of installation Takes advantage of additional protective cover reducing signal interference from outside sources Coaxial cabling Not surrounded by any shielding that would provide protection against interference from outside sources Fiber-optic cabling In Ethernet networks, installed with RJ-45 connector type

-Twisted-pair copper cabling -Used in Ethernet networks and telephone systems -Low cost and ease of installation -Not surrounded by any shielding that would provide protection against interference from outside sources -In Ethernet networks, installed with RJ-45 connector type

Which of the answers listed below refer(s) to the characteristic feature(s) of Category 5 (Cat 5) cabling? (Select all that apply) Coaxial cabling 100 Mbps transfer rate over 2 pairs of cables (100BaseT networks) F-type connector 55-meter cable segment length 1 Gbps transfer rate over all 4 pairs of cables (1000BaseT networks) BNC connector 100-meter cable segment length 10 Gbps transfer rate over all 4 pairs of cables (10GBaseT networks) Twisted-pair copper cabling RJ-45 connector Fiber-optic cabling

100 Mbps transfer rate over 2 pairs of cables (100BaseT networks), 1 Gbps transfer rate over all 4 pairs of cables (1000BaseT networks), 100-meter cable segment length, Twisted-pair copper cabling, RJ-45 connector

Which of the answers listed below refer(s) to the characteristic feature(s) of Category 5e (Cat 5e) cabling? (Select all that apply)

100-meter cable segment length Twisted-pair copper cabling RJ-45 connector 1 Gbps transfer rate over 4 pairs of cables (1000BaseT networks)

Compared to SFP, SFP+ offers enhanced data transfer rates of up to:

16 Gbps

The IEEE 802.11ac standard specifies a maximum channel bandwidth of:

160 MHz

The answers below have been arranged to represent the DNS hierarchy, from the highest level of the DNS tree (1), to the lowest level (5). Which of these answers are out of order? (Select all that apply) 1. Root domain (".", e.g. the optional trailing dot in "example.com.") 2. Top level domain (e.g. ".com", ".org", or ".edu") 3. Subdomain (e.g. "department" in "department.example.com") 4. Second level domain (e.g. "example.com") 5. Host or resource name (e.g. "a" in "a.department.example.com")

3. Subdomain (e.g. "department" in "department.example.com") 4. Second level domain (e.g. "example.com")

QSFP offers data transfer rates of up to:

4 Gbps

Which of the following answers refers(s) to the feature(s) of the IEEE 802.11ac wireless standard? (Select all that apply)

5.0 GHz frequency band, Maximum data signaling rate of up to 6.77 Gbps, Carrier Sense Multiple Access / Collision Avoidance (CSMA/CA) network access method, Multi-User Multiple Input / Multiple Output (MU-MIMO)

Frequency bands used by 802.11 networks include: (Select 2 answers)

5.0 GHz, 2.4 GHz

Which of the following answers refers to a wireless connectivity technology used for monitoring sensor data collected from low-powered sports and fitness equipment?

ANT+

What type of Ethernet cable would be used for establishing a direct communication link between two PCs?

Crossover cable

Which of the following connector types are used for RS-232 serial communications? (Select 2 answers)

DE-9 DB-25

A type of coaxial connector commonly used for cable television and cable modems is called:

F-type

A forward DNS lookup zone returns a domain name for a given IP address. True/False

False

A reverse DNS lookup zone is used for finding an IP address associated with a given domain name. True/False

False

What are the characteristic traits of single-mode fiber optics? (Select 3 answers) Transmission distances of up to 2 km More expensive than multimode fiber optics Uses LED as the source of light Transmission distances of up to 100 km Uses laser as the source of light Less expensive than multimode fiber optics

More expensive than multimode fiber optics Transmission distances of up to 100 km Uses laser as the source of light

Which of the following answers refers to the new feature introduced with the IEEE 802.11ac standard?

Multi-User MIMO (MU-MIMO)

Which type of technology enables contact-less payment transactions?

NFC

Which of the answers listed below refer(s) to the feature(s) of SFP? (Select all that apply) Small form factor transceiver Converts electrical signals to optical signals Data transfer of 10 Gbps Newer transceiver type that replaces GBIC Modular (hot swappable) interface Converts optical signals to electrical signals Fixed physical interface Data transfer of 1 Gbps

Small form factor transceiver Converts electrical signals to optical signals Newer transceiver type that replaces GBIC Modular (hot swappable) interface Converts optical signals to electrical signals Data transfer of 1 Gbps Support up to 4.25 Gbps Known as Mini-GBIC

Category 3 (Cat 3) cable is a 10 Mbps twisted-pair copper cable used in telephone wiring and older Ethernet (10BaseT) networks. True False

True

Category 7 is a twisted-pair cabling standard featuring improved specifications for canceling crosstalk and system noise. As in Cat 6A, Cat 7 cabling offers 10 Gbps data transfer rate over a cable segment length of 100 meters in 10GBaseT networks. Category 7 standard introduces new connector types (the GG45 and TERA connector). Cat 7 cabling hasn't seen a widespread market adoption yet, because all manufacturers of active equipment and network cards prefer Cat 6A standard which offers similar performance and takes advantage of the traditional RJ-45 connector. True False

True

In 10GBaseT networks, Category 6 (Cat 6) cabling supports a 10 Gbps data transfer rate at a limited range of 33-55 meters, whereas Cat 6A (Augmented) cabling allows for 10 Gbps data transfer rate over a cable segment length of 100 meters. True False

True

Setting up a wireless network to operate on a non-overlapping channel allows multiple networks to coexist in the same area without causing interference. True/False?

True

The 66 block (older type/primarily used in analog telephone systems) and the 110 block (newer type/used in computer networks) are examples of punch-down blocks used for connecting sets of wires. True False

True

The shape and angle of the tip of a fiber-optic connector can have an impact on the performance of a fiber-optic communication link. The two basic types of fiber end are Ultra Physical Contact (UPC) and Angled Physical Contact (APC). In the UPC-type connector, the connector end is polished with no angle, while APC connectors feature a fiber end polished at an 8-degree angle. Besides additional labeling (UPC or APC) that helps in identifying further details about a given connector type, fiber-optic connectors can also have different colors. The rule of thumb is that a UPC-type connector typically would be blue while APC connector would have a green color. True False

True

The term "Channel bonding" refers to a technique that allows for combining adjacent channels to increase the amount of available bandwidth. True/False

True

The term "Intrusion Detection System" (IDS) refers to a device or software application designed to detect malicious activities and violations of security policies on a network or computer host. An IDS designed to monitor networks is known as Network Intrusion Detection System (NIDS). A type of IDS installed on a host monitoring only that host is called Host Intrusion Detection System (HIDS). IDSs do not take any active steps to prevent or stop the intrusion relying only on passive response which may include sending an alert to a management console or saving information about the event in logs. True False

True

The term "VoIP endpoint" refers to a dedicated hardware device or an application program that enables Voice over Internet Protocol (VoIP) telephone calls from computing devices. True False

True

Which network device enables centralized management of WAPs?

Wireless LAN controller

Which of the answers listed below refers to a wireless protocol designed to provide communication between appliances in a home automation network?

Z-Wave