CAS HSLU

Which message delivery option is used when all devices need to receive the same message simultaneously?

Broadcast

How does BYOD change the way in which businesses implement networks?​

A BYOD environment requires an organization to accommodate a variety of devices and access methods. Personal devices, which are not under company control, may be involved, so security is critical. Onsite hardware costs will be reduced, allowing a business to focus on delivering collaboration tools and other software to BYOD users.

What is an ISP?

An ISP, or Internet Service Provider, is an organization that provides access to the Internet for businesses and individuals.

Which feature describes using personal tools to access information and communicate across a business or campus network?

BYOD

Which of these is the name for the capacity of a medium to carry data?

Bandwidth

In computer communication, what is the purpose of message encoding?

Before a message is sent across a network it must first be encoded. Encoding is the process of converting the data message into another format suitable for transmission across the physical medium. Each bit of the message is encoded into a pattern of sounds, light waves, or electrical impulses depending on the network media over which the bits are transmitted. The destination host receives and decodes the signals in order to interpret the message.

Which of the following wireless standards is used for Personal Area Networks (PANs) and allows devices to communicate over distances of 1 to 100 meters?

Bluetooth

What type of communication will send a message to all devices on a local area network?

Broadcast

Which feature contains options such as Public, Private, Custom and Hybrid?

Cloud COmputing

Which of the following terminates with BNC, N type and F type connectors?

Coax

Which two protocols belong in the TCP/IP model application layer?

DHCP, DNS

Which two protocols are service discovery protocols? (Choose two.)

DNS, DHCP

Which attack slows down or crashes equipment and programs?

DOS (Denial of Service)

The physical layer of the receiving device passes bits up to which higher level layer?

Data link

Which logical address is used for delivery of data to a remote network?

Destination IP

What types of standards are developed by the Electronics Industries Alliance (EIA)?

Electric wiring and connectors

What is the process of converting information into the proper form for transmission?

Encoding

What are two functions of end devices on a network? (Choose two.)

End devices originate the data that flows through the network. Intermediary devices direct data over alternate paths in the event of link failures and filter the flow of data to enhance security. Network media provide the channel through which network messages travel.

Which protocol operates at the network access layer of the TCP/IP model?

Ethernet

Which network infrastructure might an organization use to provide secure and safe access to individuals who work for a different organization but require access to the organization's data?

Extranet

True or false? The physical layer is only concerned with wired network connections. (True or false)

False

When data is encoded as pulses of light, which media is being used to transmit the data?

Fiber Optic Cable

Which option blocks unauthorized access to your network?

Firewall

Which three are components of message timing? (Choose three.)

Flow Control, Access method, response timeout

Which step of the communication process is concerned with properly identifying the address of the sender and receiver?

Formatting

What PDU is received by the physical layer for encoding and transmission?

Frame

A web client is sending a request for a webpage to a web server. From the perspective of the client, what is the correct order of the protocol stack that is used to prepare the request for transmission?

HTTP, TCP, IP, Ethernet

What type of network must a home user access in order to do online shopping?

Home users will go online shopping over the Internet because online vendors are accessed through the Internet. An intranet is basically a local area network for internal use only. An extranet is a network for external partners to access certain resources inside an organization. A home user does not necessarily need a LAN to access the Internet. For example, a PC connects directly to the ISP through a modem.

Which three acronyms/initialisms represent standards organizations? (Choose three.

IANA, IEEE, IETF

Which two protocols function at the internet layer? (Choose two.)

ICMP, IP

Which of the following are protocols that provide feedback from the destination host to the source host regarding errors in packet delivery? (Choose two.)

ICMPv4, ICMPv6

Which standards organization oversees development of wireless LAN standards?

IEEE

A device receives a data link frame with data and processes and removes the Ethernet information. What information would be the next to be processed by the receiving device?

IP at the internet layer

Which connections are specialized ports on a networking device that connect to individual networks?

Interface

What is one advantage of using fiber optic cabling rather than copper cabling?

It is able to carry signals much farther than copper cabling

What is done to an IP packet before it is transmitted over the physical medium?

It is encapsulated in Layer 2 Frame

Which type of network topology lets you see the actual location of intermediary devices and cable installation?

LAN

Which type of network topology lets you see which end devices are connected to which intermediary devices and what media is being used?

Logical Topology

Which delivery method is used to transmit information to one or more end devices, but not all devices on the network?

Multicast

Which type of communication will send a message to a group of host destinations simultaneously?

Multicast

Which of the following fiber-optic cable types can help data travel approximately 500 meters?

Multimode

Which of the following fiber-optic cable types is used within a campus network?

Multimode

Which of the following fiber-optic cable types use light emitting diodes (LEDs) as a data light source transmitter?

Multimode

Which connection physically connects the end device to the network?

NIC

Which type of network topology lets you see the actual location of intermediary devices and cable installation?

Physical Topology

Confidentiality, integrity, and availability are requirements of which of the four basic characteristics of network architecture?

Security

Which of the following fiber-optic cable types can travel approximately 100 km?

Single Mode

Which of the following fiber-optic cable types is used to connect long-distance telephony and cable TV applications?

Single Mode

Which of the following fiber-optic cable types use lasers in a single stream as a data light source transmitter?

Single Mode

What are two benefits of using a layered network model? (Choose two.)

Some vendors have developed their own reference models and protocols. Today, if a device is to communicate on the Internet, the device must use the TCP/IP model. The benefits of using a layered model are as follows: assists in protocol design fosters competition between vendors prevents a technology that functions at one layer from affecting any other layer provides a common language for describing network functionality helps in visualizing the interaction between each layer and protocols between each layer

Which type of UTP cable is used to connect a PC to a switch port?

Straight-through

This protocol is responsible for guaranteeing the reliable delivery of information.

TCP

What is the Internet?

The Internet provides global connections that enable networked devices (workstations and mobile devices) with different network technologies, such as Ethernet, DSL/cable, and serial connections, to communicate. A private network for an organization with LAN and WAN connections is an intranet.

A wireless LAN is being deployed inside the new one room office that is occupied by the park ranger. The office is located at the highest part of the national park. After network testing is complete, the technicians report that the wireless LAN signal is occasionally affected by some type of interference. What is a possible cause of the signal distortion?

The Microwave oven

Why are two strands of fiber used for a single fiber optic connection?

They allow for full-duplex conectivity

Which of these is a measure of the transfer of bits across the media?

Throughput

A large corporation has modified its network to allow users to access network resources from their personal laptops and smart phones. Which networking trend does this describe?

Topic 1.7.0 - BYOD allows end users to use personal tools to access the corporate network. Allowing this trend can have major impacts on a network, such as security and compatibility with corporate software and devices.

Which layer of the OSI model defines services to segment and reassemble data for individual communications between end devices?

Transport

Which procedure is used to reduce the effect of crosstalk in copper cables?

Twisting opposing circuit wire pairs together

Which of the following is the most common network media?

UTP

An employee wants to access the network of the organization remotely, in the safest possible way. What network feature would allow an employee to gain secure remote access to a company network?

VPN

Which option creates a secure connection for remote workers?

VPN (Virtual Private Network)

Which feature is a good conferencing tool to use with others who are located elsewhere in your city, or even in another country?

Video Communications

Which option describes malicious code running on user devices?

Virus, Worm or Tojan

Which network infrastructure might an organization use to provide secure and safe access to individuals who work for a different organization but require access to the organization's data?

WAN

Which two Internet connection options do not require that physical cables be run to the building? (Choose two.)

Which two Internet connection options do not require that physical cables be run to the building? (Choose two.)

Which feature uses the same cellular technology as a smart phone?

Wireless Broadband

In which scenario would the use of a WISP be recommended?

Wireless Internet Service Providers (WISPs) are typically found in rural areas where DSL or cable access is not available. A dish or antenna on the property of the subscriber connects wirelessly to a WISP transmitter, eliminating the need for physical cabling outside the building.

Which option describes a network attack that occurs on the first day that a vulnerability becomes known?

Zero Day or Zero Hour

Which of the following wireless standards is best suited for industrial and IoT environments?

Zigbee

Which device performs the function of determining the path that messages should take through internetworks?

a ROuter

What is a characteristic of UTP cabling?

cancellation

Which of the following attaches antennas to wireless devices? It can also be bundled with fiber-optic cabling for two-way data transmission.

coax

Which media uses electrical pulses to represent bits?

copper

What process is used to receive transmitted data and convert it into a readable message?

decoding

What process is used to place one message inside another message for transfer from the source to the destination?

encapsulation

Which term refers to a network that provides secure access to the corporate offices by suppliers, customers and collaborators?

extranet

True or false. Wireless LANs operate in full-duplex allowing all devices to send or receive data at the same time so the number of users does not impact performance. (True/false)

false

True or false. Wireless is not well suited for enterprise networks. (true/false)

false

True or false? When a frame is encoded by the physical layer, all bits are sent over the media at the same time. (true or false)

false

A college is building a new dormitory on its campus. Workers are digging in the ground to install a new water pipe for the dormitory. A worker accidentally damages a fiber optic cable that connects two of the existing dormitories to the campus data center. Although the cable has been cut, students in the dormitories only experience a very short interruption of network services. What characteristic of the network is shown here?

fault tolerance

Having multiple paths to a destination is known as redundancy. This is an example of which characteristic of network architecture?

fault tolerance

Which media uses patterns of light to represent bits?

fiber optic

Which of the following is the name for all computers connected to a network that participate directly in network communication?

hosts

Which statement correctly describes frame encoding?

it converts bits in a predefined code in order to provide predictable pattern to help distinguish data bits from control bits

What is the purpose of the sequencing function in network communication?

label transmitted segments of data for propper rassembly by the resiever

What is the purpose of protocols in data communications?

providing the rules requiered for a sepcific type of communication occur

During a routine inspection, a technician discovered that software that was installed on a computer was secretly collecting data about websites that were visited by users of the computer. Which type of threat is affecting this computer?

spyware

What is the definition of bandwidth?

the amount of data that can flow from one place to another in a given in amount of time

Which characteristic describes crosstalk?

the distortion of the transmitted messages from signals carried in adjacent wires

A network administrator is designing a new network infrastructure that includes both wired and wireless connectivity. Under which situation would a wireless connection be recommended?

the enduser device needs mobillity when connecting to the network

What is indicated by the term throughput?

the messaure of the bits transferd accross the media over a given perido of time

This standards organization is responsible for IP address allocation and domain name management.

Internet Assigned numbers authorithy (IANA)

This standards organization is concerned with the Request for Comments (RFC) documents that specify new protocols and update existing ones

Internet Engineering Task Force IETF

What characteristic of a network enables it to quickly grow to support new users and applications without impacting the performance of the service being delivered to existing users?

Networks must be able to quickly grow to support new users and services, without impacting existing users and services. This ability to grow is known as scalability.

A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized?

Physical Layer

Which feature is being used when connecting a device to the network using an electrical outlet?

Powerline

What is the general term that is used to describe a piece of data at any layer of a networking model?

Protocol data unit

With which type of policy, a router can manage the flow of data and voice traffic, giving priority to voice communications if the network experiences congestion?

QOS

What type of cable is used to connect a workstation serial port to a Cisco router console port?

Rollover

When data is encoded as pulses of light, which media is being used to transmit the data?

Routers and Switches

BGP and OSPF are examples of which type of protocol?

Routing

Which services are provided by the internet layer of the TCP/IP protocol suite? (Choose three.)

Routing protocols, Messanging, Internet protocol

Which of the following counters EMI and RFI by using shielding techniques and special connectors?

STP

When designers follow accepted standards and protocols, which of the four basic characteristics of network architecture is achieved?

Scalability

What are two characteristics of a scalable network? (Choose two.)

Scalable networks are networks that can grow without requiring costly replacement of existing network devices. One way to make a network scalable is to buy networking devices that are modular.

What is the purpose of the OSI physical layer?

transmitting bits accross the local media

UDP and TCP belong to which layer of the TCP/IP protocol?

transport

True or false. Standards organizations are usually vendor-neutral.

true

Which media uses patterns of microwaves to represent bits?

wireless