Aero IT: Textbook Questions

32

A CIDR notation value of /27 is equal to how many available IP addresses?

A satellite constellation

A group of satellites working together to server a common purpose is known as what?

Star

A key benefit of using a ________ topology is that, if there's a cable break, it would only affect the device connected to it.

WAN

A large retailer has a remote office that accesses its corporate office with relatively high bandwidth. Which network category does it use?

The WAN modem is functioning properly, and the router is functioning properly.

A successful ping to a public IP address confirms which of the following?

Network and broadcast

By default, there are always two IP addresses reserved on a network (or subnetwork) that cannot be assigned to a node. What are those IP addresses reserved for?

Ku Band and Ka Band

Satellites operating in which of the following frequency bands experience the greatest adverse effects due to weather?

Class A, B, and C

Select the IPv4 addresses classes that can be assigned to hosts.

201.183.100.2

Select the example of a valid IP address.

Beam

What is the coverage area cast by a satellite known as?

Resolve domain names to IP addresses

What is the function of DNS?

SDU

What is the general term for a transmitter or receiver situated on an aircraft for use in satellite communications?

255

What is the highest number possible to see in any single octet of an IP address?

Latency

What is the term for the delay between sending a request to receiving the response?

PBX

What is the term used for the aircraft's phone system?

Default gateway

What is the term used to denote the IP address of a router that allows remote traffic from the computer's local subnet to a remote subnet?

Lease

What term is used to describe the amount of time an IP address has been allocated to a device?

Ping

What type of packet is used to generate and send messages to the source IP address indicating connectivity to another device or system?

Tracert

When attempting to ping a public IP address, the response times out. Which command should be used to determine where the connection failure is occurring?

Under the tail radome and on top of the fuselage.

Where are SATCOM antennas typically mounted?

CMS

Which Device provides wireless handsets control over the cabin systems, but may not provide Internet access?

802.11

Which IEEE standard specifies an over-the-air interface between a wireless client and a base station or between two wireless clients?

802.3

Which IEEe specifications define Ethernet standards?

www.redtownbbqkitchen.com , www.notpurple.com/faq.html

Which are FQDNs?

Half-duplex

Which connection mode allows for a device to both transmit and receive, but only one at a time?

Router

Which device acts as an intersection between networks?

Switch

Which device acts as the central connectivity point of a LAN?

Router

Which device forwards network traffic based on the device's IP address?

Router

Which device is responsible for connecting an internal network to an external network?

Gateway

Which device is responsible for taking data from within the LAN out to the WAN?

Router

Which device is the central connectivity point for aircraft network devices requiring Internet access?

NIC

Which device makes it possible for a device to join a network?

Cabin router

Which device on board the aircraft is the DHCP server for the aircraft network?

Modem

Which device provides Internet access to the aircraft?

ipconfig /all

Which ipconfig syntax will provide a device's network DHCP information?

Switch

Which network device commonly uses MAC addresses for moving data?

ATG

Which network service uses ground-based towers, tends to be limited to geographic regions, and is typically fully operational above 10,000 feet AGL?

Segmenting a network based on a switch port configuration

Which of the following best describes VLANs?

Segmenting a network based on an IP address configuration.

Which of the following best describes subnetting?

It is also known as a physical address, it identifies the manufacturer using an OUI, and it used the EUI IEEE standard.

Which of the following characteristics describe a MAC address?

The ground segment

Which of the following components of SATCOM networks is responsible for receiving satellite signals and sending them to the appropriate resource?

Modem

Which of the following devices is required to pass data over a ground-based or satellite network?

Software crashes

Which of the following is NOT an effect of noise being introduced onto the physical media?

192.168.40.1

Which of the following is a Class C private IP address?

It identifies the network and node portions of the IPv4 address, and it can be used to limit the number of network nodes.

Which of the following is true about a subnet mask?

Server

Which of the following terms is a network node that shares resources with and responds to requests from other computers?

Terminal

Which of the following terms is a network node that transmits user-entered data to a host for processing and displays the results?

SATCOM

Which of the following terms refers to a system that transmits telecommunication signals into space and then back down to Earth?

Physical

Which of the following topologies describes a network of devices arranged in a particular layout and connected with Ethernet cable?

Star

Which of the following topologies describes a network where nodes are physically connected to a central connectivity device?

STP

Which physical media uses foil wrapper shielding around two pairs of conductors to resist interference and noise?

Fiber

Which physical medium is used to transmit large quantities of data at very high speeds and doesn't require additional shielding to prevent the introduction of noise?

Leased line

Which technology guarantees and uncontended, symmetric, fixed bandwidth connection between endpoints?

NOC

Which term refers to a facility that coordinates all network activities, including the monitoring and troubleshooting of data communications networks?

Serial

Which transmission method transfers bits one per clock cycle across a single transmission medium?

RJ45

Which type of connector is most commonly used by UtP or STP cables to connect devices to a LAN?

Bluetooth

Which wireless technology, when employed, creates a WPAN approximately 30 feet wide and has been known to cause interference within neighboring wireless networks?

255.255.255.0

With wich subnet mask does the /24 CIDR masks correspond?

Terminators

Abrupt changes in impedance can cause signal reflections and noise in a cable, and is the reason _________ are placed at the end of an ARINC 429 databus.

Network name

An SSID is a 32-bit alphanumeric string identifying a WAP. If it is manually altered, it can more clearly identify what?

SD-JX

An aircraft is configured with a high bandwidth connectivity solution and a low-bandwidth back-up system. Which of the following should be set as the first choice in the failover configuration?

SBB

An aircraft is configured with a high-bandwidth connectivity solution and a low-bandwidth back-up system. Which of the following should be set as the last resort in the failover configuration?

WAN management, and Failover

An aircraft's flight plan will take passengers in and out of various connectivity coverage maps. To eliminate the need for a crew member to manually select the WAN source and ensure passengers are always connected to the best WAN source possible, what must be enabled on the aircraft router?

Data Link

At which OSI layer is the MAC address applied to a data packet?

Packet switching

IN which switching technique do data packets find the best available path to their destination?

Serial

In which type of network are multiple switches connected by a single backbone cable?

Ring

In which type of topology are multiple devices physically connected to one another and vulnerable to a single point of failure?

Asymmetrical

In which type of transmission is data capacity or speed different in each direction?

Disable SSID

Most Wi-Fi routers have a selectable SSID security measure that helps prevent unauthorized users from attempting to access the wireless network. What is this option?

Packet switching

Most satellite providers offer services, such as Jet ConneX and Viasat Ku, which use the following technique?

Databus Connections

The ARINC 429 specification governs the configurations of what component of the air segment?

Connect your device to the aircraft network.

To access the router GUI, what must you do first?

Have the SIM activated through the service privider.

To have cellular data capability through the aircraft router, what must be done first?

False

True or False? A MAC address value is determined by the purchaser of the device.

False

True or False? A network client device needs a default gateway address to communicate with computers within its local network.

True

True or False? ATG services are typically available within a specific geographic area such as the Continental United States.

False

True or False? Air-to-Ground connections are available while below 10,000 fee in altitude.

False

True or False? An advantage of using a HOSTS file for DNS name resolution services is that updates to the file are automatic.

False

True or False? As most WAPs create cells over 100 fee wide, placement in the aircraft is typically in the empennage where there is the most room to mount and the least interference.

False

True or False? Cellular data provided through a router is available while in flight.

True

True or False? Devices on separate VLANs do not have the ability to communicate freely with each other.

False

True or False? It is possible to get all of your ground-based and satellite service connectivity using a single, all-purpose antenna.

True

True or False? Most satellites, along with the International Space Station, Space Shuttle, and Hubble Space Telescope, operate in LEO.

True

True or False? Multicasting is more efficient in the use of network media than unicast transmissions when many clients need to receive communications from a server.

False

True or False? One transceiver can be used to communicate with every satellite constellation.

False

True or False? Satellite systems that operate at high frequencies typically provide less bandwidth than other satellite systems.

False

True or False? Static IP addresses are automatically handed out by the network router.

False

True or False? The command to view network information on a computer is the same for Windows and macOS.

True

True or False? The difference between circuit switching and packet switching networks is that in circuit switching, a single path from one endpoint to another is built when a connection is needed.

True

True or False? The ipconfig /release command will terminate any active TCP/IP connections.

False

True or False? The more acute the look angle is when measured from the aircraft to the satellite, the less likely the aircraft is to lose the connection.

False

True or False? With higher latency comes faster network speeds.

To assign WAN functionality to more than one port, and to dedicate specific traffic to a specific WAN source.

What are common uses of VLANs on an aircraft network?

It requires no manual configuration by the flight department or passengers, and setting a limited scope prevents too many devices from receiving IP addresses.

What are the benefits of relying on DHCP?

Reduce connectivity costs while the aircraft is on the ground and protect against over satellite service overages.

What are two reasons to utilize cellular data through an aircraft router?

The process of switching between Internet connections.

What best describes WAN management?

Class A, B, and C

What class ranges correspond with the /24, /16, and /8 CIDR masks?

Open Systems Interconnection

What does the OSI acronym stand for?

Ka band

What frequency do the Iridium antennas utilize to communicate to the satellite?