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CompTia Network+ N10-1008 > Network Implementations - Objective 2 > Flashcards

Network Implementations - Objective 2 Flashcards

Networking devices, routing, Ethernet switching, wireless

1
Q

802.3ad

A

Link Aggregation

Combines multiple physical connections into a single logical one to minimize congestion

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2
Q

802.3af max wattage

A

15.4 watts

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3
Q

802.3at max wattage

A

25.5 watts

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4
Q

802.1d

A

Spanning tree protocol

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5
Q

802.1q

A

VLAN trunking

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6
Q

How do IPSs & IDSs recognize attacks?

A

Through signatures & anomalies

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7
Q

Content Engine/Caching Engine

A

Dedicated appliance that performs the caching functions of a proxy server

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8
Q

Where is a Content Engine/Caching Engine highly beneficial?

A

A remote branch office with a slow WAN link

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9
Q

What is a content switch also known as?

A

A load balancer

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10
Q

ICS

A

Industrial Control System

Describes the different types of control systems & associated instrumentation

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11
Q

SCADA

A

Supervisory control, and data acquisition

Acquires and transmits data from different systems to central panel for monitoring and control

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12
Q

The 2 routing loop prevention methods

A
  • Split horizon
  • Poison reverse
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13
Q

Number of non-overlapping 20 MHz channels in the 5 GHz band

A

24 channels

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14
Q

Two protocols associated with WPA

A

TKIP & RC4

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15
Q

Two protocols associated with WPA2

A

CCMP & AES

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16
Q

Geofencing

A

Uses GPS or RFID to define real-world boundaries where barriers can be active or passive

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17
Q

How to crack WEP

A

Capture enough initialization vectors (IV)

[using something like Aircrack-ng]

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18
Q

Type of vector used by WPA

A

TKIP

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19
Q

CSMA/CA is used in what kind of network?

A

Wireless network

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20
Q

CSMA/CD is used in what kind of network?

A

Wired network

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21
Q

Type of encryption used by WPA

A

RC4 (Rivest Cipher 4)

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22
Q

WPA2 integrity checking protocol

A

CCMP
(Counter mode cipher block chaining message authentication code protocol)

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23
Q

WPA2 encryption protocol

A

AES
(Advanced Encryption Security)

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24
Q

HSRP

A

Hot Standby Router Protocol

Proprietary first-hop redundancy by Cisco allowing for an active and a standby router and using a virtual router as a default gateway

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25
VRRP
Virtual Router Redundancy Protocol IETP open-standard variant of HSRP, and like HSRP, allows for an active and a standby router and uses a virtual router as a default gateway
26
GLBP (4 bullet points)
Gateway Load Balancing Protocol - Proprietary first-hop redundancy by Cisco - Focuses on load balancing over redundancy - Allows for an active router and a standby router - Creates a virtual router as the default gateway
27
LACP (3 bullet points)
Link Aggregation Control Protocol - Achieves redundancy by having multiple links between devices - Load balancing occurs over multiple links - Multiple links appear as single logical link
28
Multipathing
Creates more than one physical path between the server and its storage devices for better fault tolerance and performance
29
Which means of achieving high availability is cheaper in the long run... - retrofitting an existing network or - integrating practices/technology into the initial design?
integrating practices/technology into the initial design
30
Cold site
An available building that does not have any hardware or software. Might have empty racks.
31
Warm Site - what is there & restoration time frame
- a lot of the equipment - no software/data - between 24 hours and seven days
32
Hot Site - what is there & restoration time frame
- equipment and data in place, configured, & updated - minimal
33
RTO
Recovery Time Objective Time and service level within which a business process must be restored after a disaster to avoid unacceptable consequences
34
What kind of recovery site should be used in low RTO situations?
either hot or cloud
35
RPO
Recovery Point Objective Interval of time during a disruption before data lost exceeds the BCP’s maximum allowable threshold or tolerance
36
Incremental backup
Backup only data changed since last backup
37
Differential
Only backup data since the last full backup
38
PDU
Power Distribution Unit Distributes electric power, especially to racks of computers and networking equipment located within a data center
39
Pre-Action System
A fire suppression system in which a detector actuation (like a smoke detector and a sprinkler) must be tripped prior to water being released
40
3 ways of categorizing QoS traffic
- Best Effort - Integrated Services (IntServ or Hard QoS) *bandwidth reservations* - Differentiated Services (DiffServ or Soft QoS) *packets are "marked" for routers/switches to make routing decisions
41
Potential *payload* & *header* reduction of VoIP traffic using compression, including cRTP
50% & 90-95%
42
LFI What it is & where it's used
Link Fragmentation & Interleaving - Fragments large data packets and interleaves smaller data packets between the fragments (so latency-sensitive traffic doesn't have to wait for large packets) - slower-speed links to make the most of limited bandwidth
43
3 things APs must have to enable roaming between them
- The same SSID - The same channel - The same IP subnet
44
DOCSIS
The standard that determines the frequencies used in cable modem networking
45
Version of OSPF that supports IPv6
OSPFv3
46
OSPF methods of learning about other routers in the network
Hello packets & link state advertisements
47
Route redistribution
When a multiprotocol router learns route information using one routing protocol and disseminates that information using another routing protocol
48
Voice Gateway
A.k.a. VoIP gateway Converts data, providing a bridge between analogue, cellular, and IP
49
IPv4 method of preventing endless routing loops
TTL
50
IPv6 method of preventing endless routing loops
hop limit
51
IPv4 & IPv6 addresses for the default route
0.0.0.0/0 & ::/0
52
5 Functions of a load balancer
- Load balancing - Caching - Encryption and decryption a.k.a SSL offloading - QoS - Content filtering
53
Locations of VPN concentrators
- Specialized hardware - Integrated into a firewall - Integrated into a server
54
OSI layer at which proxy servers operate
Layer 7
55
Reverse proxy
Takes requests from the Internet and forwards them to servers in an internal network
56
Why proxies make good firewalls
They can dissect an entire IP packet looking for invalid data at each layer of the OSI model.
57
Next generation firewalls are also known as:
Layer 7 or Application layer firewalls
58
The two types of network layer firewalls
stateful and stateless
59
Things a firewall can do
- Permit/deny packets - Encryption/decryption - Proxying
60
3 types of load balancer configurations in an active/active setup
- Round robin (each server in turn) - Weighted round robin (in turn but most goes to one server) - Dynamic round robin (server with the smallest load is next in line)
61
CDMA
Code division multiple access Early cellular telephone technology that uses spread-spectrum to allow several users to share a band of frequencies
62
VTP
Layer 2 messaging protocol that maintains VLAN configuration consistency by **managing the addition, deletion, and renaming of VLANs** on a network-wide basis
63
Whip antenna
A pole-shaped omnidirectional antenna

CompTia Network+ N10-1008 (5 decks)

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