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WorksheetsNetworking Week 1
Total questions: 27
Worksheet time: 21mins
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
Which of the following pertains to network infrastructure security?
A competitor accesses sensitive information through an unsecured wireless network.
Builders accidentally cut a network cable while digging
A disgruntled employee alters information in a customer database.
A secretary sends confidential information in a reply to an e-mail that falsely
appears to come from her boss.
Which pair of terms describes a network communication in which a bank has 24-hour
exclusive access to an ATM? (Choose one.)
Connectionless and packet-switched
Packet-switched and connection-oriented
Circuit-switched and connection-oriented
Circuit-switched and connectionless
Which term describes a common platform for diverse communication types?
Scalability
Convergence
Fault tolerance
Quality of service
Which type of network provides customers with limited access to corporate data such
as inventory, parts lists, and orders?
Intranet
Extranet
Internetwork
Internet
A fundamental security measure is ensuring data (a) so that only intended and
authorized recipients can read data.
A fundamental security measure is ensuring network (a)
so that timely and reliable access to resources is not
disrupted by security breaches.
A fundamental security measure is maintaining data (a) so to ensure that information is not altered
in transmission.
A (a) is a device that helps direct messages between networks.
(a) are collaborative web pages created and edited by users.
A type of network security concern is network (a) security, which protects
devices and cabling.
A type of network security concern is (a) security, which protects the information carried in packets
and stored on network attached devices.
Connectionless messages are broken into (a)
Copper cables and fibre-optic cables are two types of network (a)
In wired connections, the medium that carries data in the form of electrical pulses is (a)
In wired connections, the medium that carries data in the form of light signals is (a)
Rules that govern the process of network communication are called (a)
Symbols that graphically represent network devices and media are called (a)
