Networking Week 1

A worker is assigned to work on a project with another employee from a different city.
During online meetings, there are periods of sketchy video and garbled voice communications. Which combination of the following conditions could cause this? (Choose two.)

• Poor scalability in network design

• Poor security, allowing someone to download music and video files at work

• Lack of redundant links to the firewall

• Poor QoS.

For which three reasons was a packet-switched, connectionless data communications
technology used when developing the Internet? (Choose three.)

• It can rapidly adapt to the loss of data transmission facilities

• It efficiently utilizes the network infrastructure to transfer data

• Data packets can travel multiple paths through the network simultaneously

• It allows billing of network use by the amount of time a connection is established.

• It requires that a data circuit between the source and destination be established
  before data can be transferred.

For which three reasons were circuit-switched, connection-oriented technologies rejected when the Internet was being developed? (Choose three.)

• Circuit-switched technologies required that a single message be broken up into multiple message blocks that contain addressing information.

• Early circuit-switched networks did not automatically establish alternative circuits in
  the event of circuit failure

• Circuit switched technologies required that an open circuit between network endpoints
  be established even if data was not being actively transferred between locations.

• The quality and consistency of messages transmitted across a connection-oriented,
  circuit switched network cannot be guaranteed

• The establishment of simultaneous open circuits for fault tolerance is costly

What are two components of network architecture? (Choose two.)

• People that comprise the human network

• Built-in growth potential

• Data transfer across the network

• Redundant technologies

• Corporations that operate and maintain the data network

What is the role of QoS in a converged network?

• Ensures that all traffic above available bandwidth levels is dropped

• Establishes delivery priorities for different types of communication in a network

• Determines precise priorities for all types of network communication

• Allows unused bandwidth to be shared by other organizations within the network

What network traffic processes must be in place for quality of service strategies to
work correctly? (Choose two.)

• Traffic is classified based on quality of service requirements.

• Priorities are assigned to each classification of application data.

• Web traffic is always assigned to a high-priority queue for processing.

• Digital movies are always assigned to the high-priority queue for processing.

• 
  E-mail traffic is always assigned to the low-priority queue.

What prioritizes traffic and its characteristics to manage data?

• Network administration

• Network traffic

• QoS strategy

• Network evaluation

Which form of communication is a real-time, text-based communication type used
between two or more people who use mostly text to communicate?

• Weblogs

• Wikis

• Instant messaging

• Podcasting

Which of the following best describes a fault tolerant network

• A fault tolerant network supports users who have different viewpoints

• A fault tolerant network limits the impact of hardware or software failures and recovers quickly when a failure occurs

• A fault tolerant network can expand quickly to support new users and applications without causing errors for existing users

• A fault tolerant network is built to withstand earthquakes

Which of the following best describes a scalable network

• A scalable network is built to support high-altitude environments, including skyscrapers and satellite dishes on mountains

• A scalable network supports redundant connections so alternative paths are available when a device or link fails

• A scalable network can expand quickly to support new users and applications without impacting performance
  of the services offered to existing users

• A scalable network ensures that priorities are matched with the type of communication and its importance to an organization