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Worksheets11-14
Total questions: 79
Worksheet time: 42mins
What are two reasons to create a network baseline?
to identify future abnormal network behavior
to determine if the network can deliver the required policies
to evaluate security vulnerabilities in the network
to design a network according to a proper model
to determine what kind of equipment to implement
A computer can access devices on the same network but cannot access devices on other networks. What is the probable cause of this problem?
The computer has an incorrect subnet mask.
The computer has an invalid default gateway address.
The cable is not connected properly to the NIC.
The computer has an invalid IP address.
In which step of gathering symptoms does the network engineer determine if the problem is at the core, distribution, or access layer of the network?
Narrow the scope.
Document the symptoms.
Determine ownership.
Determine the symptoms.
What network design would contain the scope of disruptions on a network should a failure occur?
the reduction in the number of redundant devices and connections in the network core
the installation of only enterprise class equipment throughout the network
the deployment of distribution layer switches in pairs and the division of access layer switch connections between them
the configuration of all access layer devices to share a single gateway
Which action should be taken when planning for redundancy on a hierarchical network design?
add alternate physical paths for data to traverse the network
continually purchase backup equipment for the network
implement STP portfast between the switches on the network
immediately replace a non-functioning module, service or device on a network
What is a definition of a two-tier LAN network design?
access and core layers collapsed into one tier, and the distribution layer on a separate tier
distribution and core layers collapsed into one tier, and the access layer on a separate tier
access, distribution, and core layers collapsed into one tier, with a separate backbone layer
access and distribution layers collapsed into one tier, and the core layer on a separate tier
What are two benefits of extending access layer connectivity to users through a wireless medium? (Choose two.)
increased flexibility
reduced costs
decreased number of critical points of failure
increased bandwidth availability
increased network management options
What is a basic function of the Cisco Borderless Architecture access layer?
provides access to the user
aggregates Layer 2 broadcast domains
aggregates Layer 3 routing boundaries
provides fault isolation
Which characteristic would most influence a network design engineer to select a multilayer switch over a Layer 2 switch?
ability to aggregate multiple ports for maximum data throughput
ability to build a routing table
ability to have multiple forwarding paths through the switched network based on VLAN number(s)
ability to provide power to directly-attached devices and the switch itself
When is the most appropriate time to measure network operations to establish a network performance baseline?
during quiet vacation periods, so that the level of non-data traffic can be determined
whenever high network use is detected, so that how the network performs under stress can be monitored
at the same time each day across a set period of average working days, so that typical traffic patterns can be established
at random times during a 10 week period, so that abnormal traffic levels can be detected
facilitates understanding the role of each device at every tier, simplifies deployment, operation, management, and reduces fault domains at every tier
hierarchical
resiliency
modularity
flexibility
satisfies user expectations for keeping the network always on
hierarchical
resiliency
modularity
flexibility
allows seamless network expansion and integrated service enablement on an on-demand basis
hierarchical
resiliency
modularity
flexibility
allows intelligent traffic load sharing by using all network resources
hierarchical
resiliency
modularity
flexibility
What are the three layers of the switch hierarchical design model? (Choose three.)
distribution
network access
access
core
data link
A network designer is considering whether to implement a switch block on the company network. What is the primary advantage of deploying a switch block?
A single core router provides all the routing between VLANs.
The failure of a switch block will not impact all end users.
This is network application software that prevents the failure of a single network device.
This is a security feature that is available on all new Catalyst switches.
Which troubleshooting tool would a network administrator use to check the Layer 2 header of frames that are leaving a particular host?
knowledge base
protocol analyzer
baselining tool
CiscoView
A user is unable to reach the website when typing http://www.cisco.com in a web browser, but can reach the same site by typing http://72.163.4.161 . What is the issue?
DNS
DHCP
TCP/IP Protocol stack
Default Gateway
What is the principle that is applied when a network technician is troubleshooting a network fault by using the divide-and-conquer method?
Once it is verified that components in a particular layer are functioning properly, it can then be assumed that components in the layers below it are also functional.
Testing is performed at Layer 7 and at Layer 1, then at Layers 6 and 2, and so on, working towards the middle of the stack until all layers are verified as operational.
Testing is performed at all layers of the OSI model until a non-functioning component is found.
Once it is verified that a component in a particular layer is functioning properly, testing can then be performed on any other layer.
A company uses a cloud-based payroll system. Which cloud computing technology is this company using?
browser as a service (BaaS)
software as a service (SaaS)
wireless as a service (WaaS)
infrastructure as a service (IaaS)
For a data center, what is the difference in the server virtualization data traffic compared with the traditional client-server model?
Data traffic from clients will be routed to multiple virtual servers.
More network control traffic is generated between virtual servers and clients.
There is more data traffic flowing from virtual servers to clients.
There are significant data exchanges between virtual servers.
Which component in a traditional infrastructure device provides Layer 2 and Layer 3 functions to create data paths within a network?
data plane
control plane
adjacency table
forwarding information base
Which network traffic management technology is a basic element in SDN implementations?
OpenFlow
OpenStack
IEEE 802.1aq
Interface to the Routing System
Which type of hypervisor would most likely be used in a data center?
Type 1
Nexus
Hadoop
Type 2
Which is a characteristic of a Type 1 hypervisor?
installed directly on a server
best suited for consumers and not for an enterprise environment
does not require management console software
installed on an existing operating system
Which two layers of the OSI model are associated with SDN network control plane functions that make forwarding decisions? (Choose two.)
Layer 1
Layer 2
Layer 3
Layer 4
Layer 5
What pre-populates the FIB on Cisco devices that use CEF to process packets?
the routing table
the adjacency table
the ARP table
the DSP
What is a function of the data plane of a network device?
sending information to the CPU for processing
building the routing table
resolving MAC addresses
forwarding traffic flows
provides high speed backbone connectivity
core layer
distribution layer
access layer
functions as an aggregator for all the campus blocks
core layer
distribution layer
access layer
provides network access to the user
core layer
distribution layer
access layer
represents the network adge
core layer
distribution layer
access layer
implements network access policy
core layer
distribution layer
access layer
establishes layer 3 routing boundaries
core layer
distribution layer
access layer
Which statement describes the concept of cloud computing?
separation of application from hardware
separation of management plane from control plane
separation of operating system from hardware
separation of control plane from data plane
Which cloud model provides services for a specific organization or entity?
a public cloud
a community cloud
a private cloud
a hybrid cloud
What two benefits are gained when an organization adopts cloud computing and virtualization? (Choose two.)
provides a “pay-as-you-go” model, allowing organizations to treat computing and storage expenses as a utility
enables rapid responses to increasing data volume requirements
distributed processing of large data sets in the size of terabytes
elimination of vulnerabilities to cyber attacks
increases the dependance on onsite IT resources
Which type of Hypervisor is implemented when a user with a laptop running the Mac OS installs a Windows virtual OS instance?
type 2
virtual machine
type 1
bare metal
A small company is considering moving many of its data center functions to the cloud. What are three advantages of this plan? (Choose three.)
The company only needs to pay for the amount of processing and storage capacity that it uses.
Cloud services are billed at a fixed fee no matter how much processing and storage are used by the company.
The company does not need to be concerned about how to handle increasing data storage and processing demands with in-house data center equipment.
The company can increase processing and storage capacity as needed and then decrease capacity when it is no longer needed.
Single-tenant data centers can easily grow to accommodate increasing data storage requirements.
How does virtualization help with disaster recovery within a data center?
supply of consistent air flow
support of live migration
improvement of business practices
guarantee of power
What technology allows users to access data anywhere and at any time?
Cloud computing
data analytics
micromarketing
virtualization
Because of enormous growth in web traffic, a company has planned to purchase additional servers to help handle the web traffic. What service or technology would support this requirement?
cloud services
data center
dedicated servers
virtualization
A company has recently become multinational. Employees are working remotely, in different time zones, and they need access to company services from any place at any time. What service or technology would support this requirement?
cloud services
Cisco ACI
dedicated servers
virtualization
ABCTech is investigating the use of automation for some of its products. In order to control and test these products, the programmers require Windows, Linux, and MAC OS on their computers. What service or technology would support this requirement?
Cisco ACI
software defined networking
dedicated servers
virtualization
Following a multicontinent advertising campaign for a new product, a company finds its client database and volume of orders are overloading its on-site computer systems but the company does not have any room to expand. What service or technology would support this requirement?=
cloud services
data center
dedicated servers
virtualization
A network administrator has been tasked with creating a disaster recovery plan. As part of this plan, the administrator is looking for a backup site for all of the data on the company servers. What service or technology would support this requirement?
software defined networking
data center
dedicated servers
virtualization
Which action takes place in the assurance element of the IBN model?
verification and corrective action
configuring systems
translation of policies
integrity checks
Refer to the exhibit. Which data format is used to represent the data for network automation applications?
XML
JSON
HTML
YAML
What is the function of the key contained in most RESTful APIs?
It is the top-level object of the API query.
It is used to authenticate the requesting source.
It represents the main query components in the API request.
It is used in the encryption of the message by an API request.
Which two configuration management tools are developed using Ruby? (Choose two.)
Puppet
Chef
Ansible
SaltStack
RESTCONF
Which term is used to describe a set of instructions for execution by the configuration management tool Puppet?
Manifest
Pillar
Cookbook
Playbook
Which term is used to describe a set of instructions for execution by the configuration management tool SaltStack?
Pillar
Playbook
Manifest
Cookbook
Which scenario describes the use of a public API?
It can be used with no restrictions.
It is used between a company and its business partners.
It is used only within an organization.
It requires a license.
What is YAML?
It is a scripting language.
It is a data format and superset of JSON.
It is a compiled programming language.
It is a web application.
Which RESTFul operation corresponds to the HTTP GET method?
post
read
update
patch
Which technology virtualizes the network control plane and moves it to a centralized controller?
SDN
fog computing
cloud computing
IaaS
What are two functions of hypervisors? (Choose two.)
to partition the hard drive to run virtual machines
to manage virtual machines
to protect the host from malware infection from the virtual machines
to allocate physical system resources to virtual machines
to share the antivirus software across the virtual machines
What is a difference between the functions of Cloud computing and virtualization?
Cloud computing separates the application from the hardware whereas virtualization separates the OS from the underlying hardware.
Cloud computing provides services on web-based access whereas virtualization provides services on data access through virtualized Internet connections.
Cloud computing utilizes data center technology whereas virtualization is not used in data centers.
Cloud computing requires hypervisor technology whereas virtualization is a fault tolerance technology.
How is the YAML data format structure different from JSON?
It uses indentations.
It uses end tags.
It uses hierarchical levels of nesting.
It uses brackets and commas.
What is the most widely used API for web services?
REST
JSON-RPC
SOAP
XML-RPC
What is REST?
It is an architecture style for designing web service applications.
It is a human readable data structure that is used by applications for storing, transforming, and reading data.
It is a way to store and interchange data in a structured format.
It is a protocol that allows administrators to manage nodes on an IP network.
What is a difference between the XML and HTML data formats?
XML does not use predefined tags whereas HTML does use predefined tags.
XML encloses data within a pair of tags whereas HTML uses a pair of quotation makes to enclose data.
XML formats data in binary whereas HTML formats data in plain text.
XML does not require indentation for each key/value pair but HTML does require indentation.
To avoid purchasing new hardware, a company wants to take advantage of idle system resources and consolidate the number of servers while allowing for multiple operating systems on a single hardware platform. What service or technology would support this requirement?
virtualization
Cisco ACI
dedicated servers
software defined networking
Which cloud computing opportunity would provide the use of network hardware such as routers and switches for a particular company?
browser as a service (BaaS)
infrastructure as a service (IaaS)
wireless as a service (WaaS)
software as a service (SaaS)
outFormat=json
resources
parameters
query
API server
format
resources
parameters
query
API server
format
outFormat=json&key=KEY&from=San+Jose,Ca&to=Monterey,Ca
resources
parameters
query
API server
format
from=San+Jose,Ca&to=Monterey,Ca
resources
parameters
query
API server
format
directions/v2/route
resources
parameters
query
API server
format
Which cloud computing opportunity would provide the use of network hardware such as routers and switches for a particular company?
software as a service (SaaS)
wireless as a service (WaaS)
infrastructure as a service (IaaS)
browser as a service (BaaS)
What component is considered the brains of the ACI architecture and translates application policies?
the Application Policy Infrastructure Controller
the hypervisor
the Nexus 9000 switch
the Application Network Profile endpoints
Which statement describes the concept of cloud computing?
separation of operating system from hardware
separation of application from hardware
separation of control plane from data plane
separation of management plane from control plane
In which situation would a partner API be appropriate?
a vacation service site interacting with hotel databases to display information from all the hotels on its web site
someone creating an account on an external app or website by using his or her social media credentials
company sales staff accessing internal sales data from their mobile devices
an internet search engine allowing developers to integrate the search engine into their own software applications
What are three components used in the query portion of a typical RESTful API request? (Choose three.)
key
parameters
format
protocol
resources
Which is a requirement of a site-to-site VPN?
It requires a VPN gateway at each end of the tunnel to encrypt and decrypt traffic.
It requires the placement of a VPN server at the edge of the company network.
It requires a client/server architecture.
It requires hosts to use VPN client software to encapsulate traffic.
Which statement describes an important characteristic of a site-to-site VPN?
It must be statically set up.
It requires using a VPN client on the host PC.
It is commonly implemented over dialup and cable modem networks.
It is ideally suited for use by mobile workers.
After the initial connection is established, it can dynamically change connection information.
Which protocol is attacked when a cybercriminal provides an invalid gateway in order to create a man-in-the-middle attack?
HTTP or HTTPS
DNS
ICMP
DHCP
Which statement describes a VPN?
VPNs use virtual connections to create a private network through a public network
VPNs use open source virtualization software to create the tunnel through the Internet.
VPNs use dedicated physical connections to transfer data between remote users.
VPNs use logical connections to create public networks through the Internet.
In which TCP attack is the cybercriminal attempting to overwhelm a target host with half-open TCP connections?
SYN flood attack
port scan attack
session hijacking attack
reset attack
