Network Performance And Recovery

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Questions Bank

Introduction to Networking
Network Infrastructure and Documentation
Addressing on Networks
Network Protocols and Routing
Network Cabling
Wireless Networking
Virtualization and Cloud Computing
Subnets and VLANs
Network Risk Management
Security in Network Design
Network Performance and Recovery
Wide Area Networks

All Questions

Question 1

Free

True/False

Most UNIX and Linux desktop operating systems provide a GUI application for easily viewing and filtering the information in system logs.

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True

False

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Question 2

Free

True/False

The SNMP version 3 protocol introduces authentication, validation, and encryption for messages exchanged between devices and the network management console.

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True

False

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Question 3

Free

True/False

Wireshark or any other monitoring software running on a single computer connected to a switch doesn't see all the traffic on a network, but only the traffic the switch sends to it, which includes broadcast traffic and traffic specifically addressed to the computer.

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True

False

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Question 4

Free

True/False

You can find out where various logs are kept on some UNIX and Linux systems by viewing the /etc/syslog.conf or /etc/rsyslog.conf files.

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True

False

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Question 5

Free

True/False

Setting a NIC to run in promiscuous mode will allow it to see all network traffic passing through a network switch.

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True

False

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Question 6

True/False

A system with an availability of 99.999% can be down for a maximum of 52 minutes per year.

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True

False

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Question 7

True/False

A RAID 5 configuration requires a minimum of two hard disks to operate.

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True

False

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Question 8

True/False

A brownout is a momentary decrease in voltage; also known as a sag.

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True

False

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Question 9

True/False

A hot site consists of computers, devices, and connectivity necessary to rebuild a network exist, but without appropriate configuration.

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True

False

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Question 10

Multiple Choice

When using SNMP with TLS, what port do agents receive requests on?

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161

162

10161

10162

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Question 11

Multiple Choice

At what point is a packet considered to be a giant?

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It becomes a giant when it exceeds the medium's maximum packet size.

It becomes a giant when it exceeds 1500 bytes.

It becomes a giant only when fragmented pieces are reassembled and the packet size is too large.

It becomes a giant once a VLAN tag is added.

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Question 12

Multiple Choice

Packets that are smaller than a medium's minimum packet size are known by what term below?

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jabbers

giants

ghosts

runts

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Question 13

Multiple Choice

When a device handles electrical signals improperly, usually resulting from a bad NIC, it is referred to by what term below?

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ghost

jabber

talker

blabber

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Question 14

Multiple Choice

When using DiffServ, what type of forwarding utilizes a minimum departure rate from a given node, which is then assigned to each data stream?

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assured forwarding

prioritized forwarding

scaled forwarding

expedited forwarding

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Question 15

Multiple Choice

What 3-bit field in a 802.1Q tag is modified to set a frame's Class of Service (CoS)?

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EtherType

CRC checksum

Tag Protocol Identifier (TPID)

Priority Code Point (PCP)

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Question 16

Multiple Choice

A highly available server is available what percentage of the time?

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90%

99%

99.99%

99.999%

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Question 17

Multiple Choice

What happens when an NMS uses the SNMP walk command?

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The NMS sends a request for data to the agent on a managed device.

The NMS uses get requests to move through sequential rows in the MIB database.

The NMS requests a list of all active SNMP traps on the system.

The NMS walks through a list of given SNMP hosts.

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Question 18

Multiple Choice

When Comcast was found to be interfering with BitTorrent traffic, what method was being used?

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Comcast was creating access lists that blocked known BitTorrent trackers.

Comcast was interjecting TCP segments with the RST (reset) field set.

Comcast used DNS poisoning to prevent clients from talking to other BitTorrent users.

Comcast used IP spoofing to impersonate other BitTorrent clients, then dropped traffic.

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Question 19

Multiple Choice

What term is used to describe the average amount of time that will pass for a device before a failure is expected to occur?

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estimated time to failure (ETTF)

product cycle lifetime (PCL)

maximum time available (MTA)

mean time between failures (MTBF)

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Question 20

Multiple Choice

The Link Aggregation Control Protocol was initially defined by what IEEE standard?

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IEEE 802.3af

IEEE 802.1cd

IEEE 802.3ad

IEEE 802.3bd

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