Network Statistics Measurement Systems Questions & Answers

This set of Computer Network Management Multiple Choice Questions & Answers (MCQs) focuses on “Network Statistics Measurement Systems”.

1. One key aspect of network management is _______ management.
a) traffic
b) link
c) strategic
d) operation
View Answer

Answer: a
Explanation: There are various network management methods such as fault management, security management, accounting management, address management etc. Traffic management is also a major aspect of network management.

2. ________ is the best tool to gather network statistics.
a) SNMP MIB Browser
b) Protocol analyzers
c) RMON Probe
d) SNMP Command-Line Tools
View Answer

Answer: b
Explanation: One of the best ways to gather network statistics is to capture packets traversing network segments or across node interfaces in a promiscuous mode. We have learned that protocol analyzers do just that. Thus, they are good tools to gather network statistics.

3. The RMON1 MIB groups and tables are used to gather statistics at the ________ in Ethernet and token ring LANs.
a) transport layer
b) application layer
c) network layer
d) data link layer
View Answer

Answer: d
Explanation: The RMON1 MIB groups and tables are used to gather statistics at the data link layer in Ethernet and token ring LANs. The RMON2 MIB groups and tables define parameters for higher-layer statistics.

4. How are load statistics in an IP network obtained?
a) It is obtained using NetMetrix LanProbe and a protocol analyzer
b) It is obtained by measuring traffic in a segment directly
c) It is obtained by measuring IP packets at the network layer level
d) It is obtained by presenting similar statistical data on traffic
View Answer

Answer: c
Explanation: Load statistics in an IP network can also be obtained by measuring IP packets at the network layer level. The entities in the network layer host and the network layer matrix groups in RMON2 MIB can be used for this measurement

5. Data for traffic monitoring can be sampled at the data link layer using the RMON2 SMI history group.
a) True
b) False
View Answer

Answer: b
Explanation: The source, the destination, and the source-destination pair are used for traffic load monitoring. Data for traffic monitoring can be sampled at the data link layer using the RMON1 MIB history group and not using the RMON2 SMI group which has a totally different application.

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6. Traffic load information can be used for _______ management of real-time and non-real-time traffic.
a) fault
b) security
c) amplitude
d) bandwidth
View Answer

Answer: d
Explanation: We can obtain the traffic load for different applications such as file transfer (FTP), Web data (HTTP), and news groups (NNTP). This information can be used for bandwidth management of real-time and non-real-time traffic.

7. In SMI, a record is an unordered collection of elements of different types.
a) True
b) False
View Answer

Answer: b
Explanation: SMI provides a very simple view of the network. Every element is completely defined by a set of variables, which may take on a limited number of data types. These include scalar or primitive types and three structured or constructed types (arrays, records, and sets). A record is an ordered collection of elements of different types, with each element referred to by name.

8. The SNMP protocol allows a/an ______ to get or set the value of a variable.
a) agent
b) object
c) manager
d) host
View Answer

Answer: c
Explanation: A record can be defined to bold related variables pertaining to one part of an NE (in one subtree of the MIB). Another record with identical fields but different names must be defined The SNMP protocol allows a manager to get or set the value of a variable.

9. Derived rate measure is constant and precise.
a) True
b) False
View Answer

Answer: b
Explanation: A rate is a derived measure. The derived measure of rate is imprecise and gives different results depending on the averaging interval. Different managers may require different averaging intervals and even one manager may require different averaging intervals at different times.

10. What is the use of RMON MIB?
a) It is very useful in localizing the source of route failure
b) It provides a convenient mechanism to build network-monitoring systems
c) It analyzes the data for the required statistics
d) It is used for obtaining port information of different applications and sessions
View Answer

Answer: b
Explanation: The RMON MIB that we studied in, along with the SNMP communication protocol provides a convenient mechanism to build network-monitoring systems.

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