Network Management
Configuration Management records software/hardware elements, versions and settings in database, e.g.
True / False
True
Select the five phases in SDLC:
a. Planning
b. Analysis
c. Design
d. Implementation
e. Maintenance
f. Troubleshooting
g. Deployment
h. User Training
a. Planning
b. Analysis
c. Design
d. Implementation
e. Maintenance
Select the False statement:
a. VPN increases Network speed
b. VPN increases Network Traffic overhead
c. VPN increases communication security
a. VPN increases Network speed
Capacity planning involves trying to determine the amount of network bandwidth necessary to support an application or a set of applications
True / False
True
Network management traffic travels same paths as user traffic in:
a. In-band Monitoring
b. Out-band Monitoring
a. In-band Monitoring
Detect, log, notify and optionally attempt to correct problems are the tasks of:
a. Configuration management
b. Fault management
c. Accounting management
d. Performance management
e. Security management
b. Fault management
Problem identification, opportunities, and setting objectives are part of..... in SDLC.
a. Analysis phase
b. Design Phase
c. Implementation Phase
d. Maintenance Phase
e. Planning Phase
e. Planning Phase
The VPN that is used when a connection between two separate intranets is required, but without the possibility of one accessing the other directly.
a. Intranet VPN
b. Extranet VPN
c. Remote Access VPN
b. Extranet VPN
An extranet is a controlled private network that allows access to partners, vendors and suppliers or an authorized set of customers – normally to a subset of the information accessible from an organization's intranet. An extranet is similar to a DMZ in that it provides access to needed services for authorized parties, without granting access to an organization's entire network.
Mean time to repair is the sum of which of the following three timings:
a. Mean Time To Diagnose
b. Mean Time To Respond
c. Mean Time To Fix
d. Mean Time Before Failure
e. Mean Time To Purchase
f. Mean Time to Test
MTTR = MTTDiagnose + MTTRespond + MTTFix
Following is the drawback of which type of monitoring:
"Devices may be unreachable in times of network problem (Congestion, hardware/software failure, security attack)"
a. In-band Monitoring
b. Out-band Monitoring
a. In-band Monitoring
Quantify, measure, report, analyse, Measures network behaviour are the tasks of:
a. Configuration Managment
b. Fault Managment
c. Performance Management
d. Security Management
e. Accounting Management
c. Performance Management
Which of the following phase is not available in SDLC?
a. Simulation/Prototyping
b. Design
c. Maintenance
a. Simulation/Prototyping
Note:
NDLC has separated the:
Design phase into two: Design & Simulation/Prototyping
Maintenance into two:
Monitoring and Management
The VPN that provides a secure connection between multiple users in various fixed locations with the ability to access each other’s resources.
a. Intranet VPN
b. Extranet VPN
c. Remote Access VPN
a. Intranet VPN
Muscat branch of a big company and you’re currently collaborating with employees from the Salalah branch. Thanks to the site-to-site VPN you’re using, your local area networks (LANs) are both connected to the same wide area network (WAN)
A good network administrator will have which of the following skills:
a. Computer skills: LAN, WAN, voice, data, HW/SW
b. People skills: talk to users, training
c. Management skills: budget, statistics, time, project
d. Financial planning skills
e. Knowledge of statistics
f. Speaking and writing skills
a. Computer skills: LAN, WAN, voice, data, HW/SW
b. People skills: talk to users, training
c. Management skills: budget, statistics, time, project
d. Financial planning skills
e. Knowledge of statistics
f. Speaking and writing skills
SNMP uses separate physical interfaces and logical connections for switched networks under:
a. In-band Monitoring
b. Out-band Monitoring
b. Out-band Monitoring
Identifying resources and users, Mapping allowable access, Monitor and log access and attempts are the tasks of:
a. Configuration Managment
b. Fault Managment
c. Performance Management
d. Security Management
e. Accounting Management
d. Security Management
What is the reliability of a modem if the MTBF is 3000 hours and a transaction takes 20 minutes, or 1/3 of an hour (0.333 hours):
equation:
R(t) = e -bt
in which: b = 1/MTBF
t = the time interval of the operation
e= 2.718
–R(0.333 hours) = e -(1/3000)(0.333)
= e -0.000111
= 0.99989
The VPN that connects the user to a secure remote server in order to access a private network. The added encryption ensures that security isn’t compromised.
a. Intranet VPN
b. Extranet VPN
c. Remote Access VPN
c. Remote Access VPN
Select all true:
a. MTBF - Mean time before failure
b. MTTR -Mean time to repair.
c. SLA's inclue both MTTR and MTBF
d. Availability: Amount of time that the system will not be available
e. Reliability: the probability of a component or system will be operational
a. MTBF - Mean time before failure
b. MTTR -Mean time to repair.
c. SLA's include both MTTR and MTBF
e. Reliability: the probability of a component or system will be operational
Which of the following are SNMP commands
a. GET
b.GETNEXT
c. SET
d. TRAP
e. POST
f. RECORD
a. GET : The snmpget command retrieves the value of a MIB object
b.GETNEXT: retrieves the value of the next MIB object in a sequence or table.
c. SET: sets the value of a MIB object.
d. TRAP: Generate a notification (trap) to report an event to the SNMP manager ( Agent to Management Station)
ISO Network Management Functions FCAPS
a. Configuration Managment
b. Fault Managment
c. Performance Management
d. Security Management
e. Accounting Management
f. Preventive managment
g. Auditing management
h. Service management
i. Capacity management
A,B,C,D,E
Availability% = (Total available time – Downtime) / Total available time
Calculate the availability of a modem for one month (24 hours per day for 30 days, or 720 hours), knowing the modem will be down for 2 hours during that period:
Availability% = (720 – 2) / 720
= 0.997
Tunnelling requires three different protocols: Passenger protocol, Encapsulating protocol and Carrier protocol: Which statements are correct in this context?
a. IP is a passenger protocol
b. TCP / UDP is a carrier protocol
c. GRE, IPSec, L2F, PPTP, L2TP are carrier protocols
d. GRE, IPSec, L2F, PPTP, L2TP are encapsulating protocols
e. carrier protocols: PPP, ADSL, FrameRelay, ATM
a. IP is a passenger protocol
d. GRE, IPSec, L2F, PPTP, L2TP are encapsulating protocols
e. carrier protocols: PPP, ADSL, FrameRelay, ATM
Regarding Capacity Planning select all that apply:
a. Analytical modelling - mathematical equations to calculate various network values
b. Benchmarking -comparing statistics against known measurements
c. Computer simulation - modelling a system using a computer-based simulation tool
d. Linear projection - predicting network capacities based on the current network parameters and multiplying those capacitiesa. Analytical modelling - mathematical equations to calculate various network values
b. Benchmarking -comparing statistics against known measurements
c. Computer simulation - modelling a system using a computer-based simulation tool
d. Linear projection - predicting network capacities based on the current network parameters and multiplying those capacities
Which statements are true about SNMP: Select all that apply:
a. SNMP v1 does not have the agent to agent communication
b. SNMP runs on TCP
c. Centralised management does not create a large volume of data traffic
d. SNMP system consists of Network Managers, Agents and Management Information Base (MIB)
e. SNMP uses UDP
f. SNMP v2 and V3 allow multiple managers
g. Multiple managers help to reduce overall network traffic overhead
a. SNMP v1 does not have the agent to agent communication
d. SNMP system consists of Network Managers, Agents and Management Information Base (MIB)
e. SNMP uses UDP
f. SNMP v2 and V3 allow multiple managers
g. Multiple managers help to reduce overall network traffic overhead