Ch.11 Networking+
What makes up the first 6 bits of the 8-bit DiffServ field?
Differentiated Services Code Point (DSCP)
A hot site consists of computers, devices, and connectivity necessary to rebuild a network exist, but without appropriate configuration.
False
The Link Aggregation Control Protocol was initially defined by what IEEE standard?
IEEE 802.3ad
Which of the following statements describes a RAID 0 configuration?
In a RAID 0, data is striped across multiple disks to improve performance.
What Storage Area Network (SAN) protocol runs on top of TCP, and can be used on an existing twisted-pair Ethernet network, while maintaining low cost?
Internet SCSI (iSCSI)
What does the Common Address Redundancy Protocol do?
It allows a pool of computers or interfaces to share the same IP address.
At what point is a packet considered to be a giant?
It becomes a giant when it exceeds the medium's maximum packet size.
A differential backup covers what data on a system?
It includes data that has changed since the last full backup.
What is distributed switching?
It is a single physical switch that is partitioned in software to perform as multiple switches.
A network TAP serves what purpose on a network?
It provides a mirrored port for monitoring traffic between other ports.
When a device handles electrical signals improperly, usually resulting from a bad NIC, it is referred to by what term below?
JABBER
What 3-bit field in a 802.1Q tag is modified to set a frame's Class of Service (CoS)?
Priority Code Point (PCP)
Packets that are smaller than a medium's minimum packet size are known by what term below?
RUNTS
In planning for disaster recovery, what is the ultimate goal?
The continuation of business.
You are attempting to determine how available your Linux systems are, and need to find the current system uptime. What command should you use?
UPTIME
The grouping of multiple servers so that they appear as a single device to the rest of the network is known as which term?
clustering
When using DiffServ, what type of forwarding utilizes a minimum departure rate from a given node, which is then assigned to each data stream?
expedited forwarding
A snapshot is most similar to which type of backup scheme?
incremental backup
Which type of backup scheme only covers data that has changed since the last backup?
incremental backup
What term is used to describe the average amount of time that will pass for a device before a failure is expected to occur?
mean time between failures (MTBF)
Once a device has failed, what metric measures the average amount of time to repair?
mean time to repair (MTTR)
Each managed object on a managed device using SNMP is assigned which of the following?
object identifier (OID)
What is the network ID of 100.100.100.100/28?
100.100.100.96
When using SNMP with TLS, what port do agents receive requests on?
10161
How many hosts are on the network 100.100.100.80/28?
14
A highly available server is available what percentage of the time?
99.999%
What statement regarding the use of a network attached storage device is accurate?
A NAS can be easily expanded without interrupting service.