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WorksheetsNETWORK SERVICES, ARCHITECTURES, CLOUD CONCEPTS & DEVICES
Total questions: 25
Worksheet time: 13mins
Which of the following DNS concepts dictates how long a DNS server or client might cache DNS name resolution information?
Increment duration
Hop count
TTL
Backoff timer
Which component of NTP is a measure of how far the NTP client is from the server?
Metric
Administrative distance
Stratum
MED
What type of DNS message is often used to perform reverse lookups?
SRV
TXT
MX
PTR
Which of these set the lease duration for a DHCP server that is servicing many clients in a network?
Scope Options
Zone Record
Relay Agent
DHCP Forwarder
What is the name of the DHCP message that a client send when it needs to obtain IP address information in the first step of the four-way DHCP process?
DHCP Discover
DHCP Request
DHCP Offer
DHCP Ack
Which port/protocol is used by NTP
TCP/80
UDP/123
HTTPS/443
TFTP/69
BGP is an example of a technology found in what layer/plane of operation?
Control
Data
Policy
Management
Which of these is an example of east-west traffic flow in a modern data center?
Client requesting email from a datacenter SaaS email solution
Container requesting services from another container in the solution
Client uploading large number of archive files for storage
Client downloading large number of archive files from a SAN
How does CISCO ACI spine and leaf model implement connectivity?
By connecting each leaf device to another leaf device
By connecting each spine device to another spine device
By connecting each leaf device to each spine device
By connecting each spine device to every other spine device
The cloud characteristic ability to dynamically scale resources as needed during high and low demand.
Multitenancy
Rigidity
Elasticity
Security
Popular option to ensure cloud-based data security in transit.
Public Internet
Direct private/VPN
RDP
SFTP
'As a service' model that provides cloud environment to test and deploy applications.
PaaS
SaaS
Iaas
DaaS
Refers to client's data being stored on shared physical servers in the public cloud infrastructure.
IaaC
Orchestration
Automation
Multitenancy
Cloud deployment featuring many customers consuming services from a single provider.
Private
Public
Hybrid
Community
What configuration on a layer 2 switch is used to define broadcast domains where they would NOT exist naturally on their own?
VTP
ARP
STP
VLAN
How many collision domains does a switch with 12 ports have?
None
12
2
1
What networking device uses signatures to protect a network from known malicious attacks?
Proxy Server
IPS
WLAN Controller
Media Converter
Router operating on layer 3 makes its forwarding decisions based on
Destination MAC address
Destination IP address
Source MAC address
Source IP address
In using a network firewall in your enterprise infrastructure, the firewall requires you to define permitted outbound connections. Once done, the appropriate and expected data flows are dynamically allowed through the firewall. Which firewall characteristic is described?
Stateless
Deterministic
Zone-based
Stateful
A VOIP signaling protocol used to setup, maintain and tear down VOIP phone calls.
RJ45
SIP
IMAP
MX
How many broadcast domains exist in a router with 12 ports?
None
12
2
1
Which network infrastructure device primarily makes forwarding decisions based on layer 2 MAC addresses?
Router
Multilayer switch
Hub
Switch
Which device can act as both a content cache and a URL filter and is configured in the client browser of an end-user system?
Media Converter
WLAN
IPS
Proxy Server
Which of the following is the LARGEST MTU for a standard Ethernet frame?
1452
1492
1500
2304
A technician is documenting an application that is installed on a server and needs to verify all existing web and
database connections to the server. Which of the following tools should the technician use to accomplish this
task?
tracert
ipconfig
netstat
nslookup
