Test your basic knowledge |

Ethernet Technologies

Subject : it-skills

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Disables a switch port
Switch#show ip cef
Layer 3 routing information builds and pre-populates a single database of the entire network topology; All table lookups are performed in hardware with the longest matching destination used in forwarding
Switch(config-if)#shutdown
Switch(config-if)#switchport mode access

2. Displays a list of all interfaces in an error-disabled state
Switch#show interfaces status err-disabled
Half duplex
Switch#show ip cef {network} [{mask}] [longer-prefixes] [detail]
Institute of Electrical and Electronics Engineers

3. What is the maximum cabling distance for 1000BASE-CX?
25 metres
Switch(config)#errdisable detect cause arp-inspection
100 metres
Source IP (/32); Destination IP (/32); Protocol (/16); IP ToS (/8)

4. What is the standard for Gigabit Ethernet (1000 Mbps)?
IEEE 802.3z
Tunnel
Down - static access - trunk or tunnel
Switch(config)#errdisable detect cause storm-control

5. What CEF adjacency is used to switch packets destined for the null interface?
Switch#show interfaces status
The Null adjacency
1000BASE-CX - 1000BASE-T - 1000-BASE-SX - 1000-BASE-LX/LH and 1000-BASE-ZX
Content-Addressable Memory

6. Enables error-disable for Bridge Protocol Data Units (BPDU) received on ports configured for STP PortFast
The Punt adjacency
Partition and tune the TCAM on some Catalyst switches into areas for different functions
Static access
Switch(config)#errdisable detect cause bpduguard

7. What is 1000BASE-SX?
25 metres
Switch(config)#define interface-range {macro-name} {type} {module}/{number} [- {number}] [ - {type} {module}/{number} ...]
Gigabit Ethernet over 1 pair 50 or 62.5 micron MMF (850 nm laser)
Source MAC address; Port of arrival; VLAN; Time stamp

8. Enables automatic re-enabling of error-disabled ports
Switch(config)#errdisable recovery cause {all | {cause-name}}
Value - Mask - and Result (VMR)
The CEF entry version number
Forwarding Information Base

9. What information is stored in TCAM?
The Null adjacency
Full duplex if only one of the two stacking connectors is used; Half duplex over a shared bus if if both connectors are used
Security and QoS ACLs
The Layer 3 engine

10. What are the operational modes of a Layer 2 switched interface?
1000BASE-CX - 1000BASE-T - 1000-BASE-SX - 1000-BASE-LX/LH and 1000-BASE-ZX
Down - static access - trunk or tunnel
Switch(config)#define interface-range {macro-name} {type} {module}/{number} [- {number}] [ - {type} {module}/{number} ...]
Switch(config)#errdisable detect cause udld

11. What is the prerequesite for creating a working SVI?
A station must wait its turn to transmit; it can't transmit and receive at the same time
Static access or trunk
Creating the VLAN
1 -2 on one end with 3 -6 on the other end - and 4 -5 on one end with 7 -8 on the other end

12. Enables error-disable when the Port Aggregation Protocol (PAgP) is flapping
Numeric values that represent what action to take after the TCAM lookup occurs
Switch(config)#errdisable detect cause gbic-invalid
Switch(config)#errdisable detect cause pagp-flap
Switch#show errdisable recovery

13. What are the letters used with 10GBASE-X two-letter suffixes to specify the transceiver wavelengths?
Process the first packet in a traffic flow to determine the destination
SVI or native routed interface
S = Short; L = Long; E = Extra-long
Switch#show interfaces {interface} switchport

14. What is the DTP negotiation mode of a switch port configured as trunk?
Feature Manager (FM) and Switching Database Manager (SDM)
1 -2 on one end with 3 -6 on the other end
On
70 km for 9 micron SMF; 100 km for 8 micron SMF

15. What is the maximum cabling distance for Fast Ethernet over singlemode fibre?
Switch#show interfaces {interface} switchport
10 km
550 metres for 50 or 62.5 micron MMF; 10 km for 9 micron SMF
IEEE 802.3u

16. What is 10GBASE-LX4/LW4?
The Null adjacency
Full duplex
Off
10 Gigabit Ethernet over 50 or 62.5 micron MMF or 9 micron SMF (1300 nm WWDM laser)

17. What is the default age-out time for stale entries in the CAM table?
Switch(config)#errdisable detect cause unicast-flood
Switch#show errdisable recovery
300 seconds
Switch(config)#interface range macro {name}

18. What is 10GBASE-X?
10 Gigabit Ethernet over copper CX4 with Infiniband connectors
In parallel revealing the best (longest) match in a single table lookup
Cabling specifications for 10 Gigabit Ethernet
The switch port falls back to default setting of half duplex

19. How is the TCAM organised?
By Mask/Value - where each unique mask has eight value patterns associated with it
Gigabit Ethernet over 1 pair 50 or 62.5 micron MMF (850 nm laser)
Switch#show interfaces status
Source IPX network (/32); Destination IPX network (/32); Destination node (/48); IPX packet type (/16)

20. What connectors can be used with GBIC modules?
Switch#show running-config interface {interface}
SC fibre optic or RJ-45 UTP
10 Gigabit Ethernet over 50 or 62.5 micron MMF or 9 micron SMF (1300 nm WWDM laser)
Gigabit Ethernet over 1 pair 50 or 62.5 micron MMF (850 nm laser)

21. What is the timer range for automatic re-enabling of error-disabled ports?
Trunk or dynamic
Accelerated CEF (aCEF)
From 30 seconds to 86 -400 seconds (24 hours)
100BASE-TX - 100BASE-T2 - 100BASE-T4 and 100-BASE-FX

22. What are the duplex modes of a GigaStack GBIC?
Switch#show mac address-table count [address {mac-address}] [interface {interface}] [vlan {vlan}]
Half duplex
SC or MT-RJ
Full duplex if only one of the two stacking connectors is used; Half duplex over a shared bus if if both connectors are used

23. What is full duplex operation?
Stations can transmit and receive at the same time because switched Ethernet removes the possibility of collisions
Packets that have been truncated before they were fully received
Through exchange of information - which means that for one end to successfully negotiate duplex mode the other end must also be set to autonegotiate
A name assigned to a ranges of interfaces

24. Displays switch port information for a specified interface
Value - Mask - and Result (VMR)
Native routed interface
From 30 seconds to 86 -400 seconds (24 hours)
Switch#show interfaces {interface} switchport

25. What CEF adjacency is used to discard packets because of access list or other policy action?
The Discard adjacency
Switch(config-if)#switchport access vlan {vlan}
Full duplex if only one of the two stacking connectors is used; Half duplex over a shared bus if if both connectors are used
Per port collision domains; Full duplex mode; Dedicated bandwidth; Error detection; Broadcast thresholds; Intelligent filtering and forwarding

26. Sets the duplex mode of an Ethernet or Fast Ethernet interface
Switch(config-if)#duplex {auto | full | half}
IEEE 802.3u
Switch(config)#errdisable detect cause ilpower
10 Gigabit Ethernet over 9 micron SMF (1550 nm serial laser)

27. What is the maximum cabling distance for 10GBASE-LR/LW?
Switch(config)#errdisable detect cause storm-control
10 km
SVI
10 Gigabit Ethernet over 9 micron SMF (1550 nm serial laser)

28. What technology was merged into the IEEE 802.3 Ethernet standard to create Gigabit Ethernet?
Down - static access - trunk or tunnel
Switch#show interfaces {interface} switchport
ANSI X3T11 FibreChannel
Store-and-forward

29. What is the standard for 10 Gigabit Ethernet (10GbE)?
Security and QoS ACLs
A name assigned to a ranges of interfaces
10 Gigabit Ethernet over 50 or 62.5 micron MMF or 9 micron SMF (1300 nm WWDM laser)
IEEE 802.3ae

30. What is 10GBASE-ER/EW?
Cabling specification for 10 Mbps Ethernet over Unshielded Twisted Pair (UTP) cabling
10 Gigabit Ethernet over 9 micron SMF (1550 nm serial laser)
Switch(config)#interface range macro {name}
Switch(config-if)#duplex {auto | full | half}

31. What is MLS?
Switch(config)#errdisable detect cause arp-inspection
The CEF entry version number
Gigabit Ethernet over 4 pairs EIA/TIA Category 5 UTP
Multilayer Switching

32. How are ternary combinations implemented?
Logical Operation Unit
Switch(config)#errdisable detect cause l2ptguard
With a mask value in addition to binary values to decide which keys in a table are relevant
When the Spanning Tree Protocol (STP) has put the switch port in learning or forwarding state

33. What packets are immediately sent to the CEF Layer 3 engine for further processing?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

34. When can a switch start to learn source MAC addresses on incoming ports?
When the Spanning Tree Protocol (STP) has put the switch port in learning or forwarding state
Switch(config)#errdisable detect cause dtp-flap
ARP requests and replies; IP packets requiring an ICMP response; IP broadcasts to be relayed; Routing protocol updates; CDP packets; Packets needing encryption; Packets triggering NAT; Other non-IP packets
Switch(config)#interface {type}{module}/{number}

35. What is the name of a Layer 3 logical interface on a switch that represents an entire VLAN?
SVI
Switch(config)#interface {type}{module}/{number}
Cisco Express Forwarding
From 30 seconds to 86 -400 seconds (24 hours)

36. What is the content of TCAM Result entries?
Numeric values that represent what action to take after the TCAM lookup occurs
Security and QoS ACLs
The switch port falls back to default setting of half duplex
Switch(config)#no ip cef

37. Disables CEF operation globally
Trunk
A proprietary connector with a high-data-rate copper cable with enhanced signal integrity and EMI performance
Switch(config)#no ip cef
Switch(config)#errdisable detect cause psecure-violation

38. What is the maximum cabling distance for 10GBASE-CX4?
15 metres
IEEE 802.3
Multilayer Switching
Route caching and topology based

39. What portion of the FIB contains the Layer 3 next-hop addresses for each entry together with the corresponding Layer 2 information?
100BASE-TX - 100BASE-T2 - 100BASE-T4 and 100-BASE-FX
Switch#show mac address-table static [address {mac-address}] [interface {interface}] [vlan {vlan}]
The adjacency table
When there are more access list entries and Layer 4 operations than available Mask/Value and LOU entries

40. What fields are rewritten in hardware before a Layer 3 packet is switched to the to egress queue of a multilayer switch?
Layer 2 source and destination MAC addresses; Layer 3 Time-To-Live (TTL) value and header checksum
Accelerated CEF (aCEF)
Switch(config)#no ip cef
When there are more access list entries and Layer 4 operations than available Mask/Value and LOU entries

41. What are the reasons for packets being dropped by CEF?
Encapsulation failure; Unresolved address; Unsupported protocol; No valid route; No valid adjacency; Checksum error
Switch#show interfaces {interface} switchport
SVI or native routed interface
Source IP (/32) - Destination IP (/32) - Protocol (/16) - IP ToS (/8) - Source port (/16) - Source operator (/4) - Destination port (/16) - Destination operator (/4)

42. What function is performed by the Feature Manager (FM)?
Switch(config)#no ip cef
Switch(config-if)#duplex {auto | full | half}
Compiling Access Control Entries (ACE) into the TCAM table
Gigabit Ethernet over 1 pair 8 or 9 micron SMF (1550 nm laser)

43. What are the letters used with 10GBASE-X two-letter suffixes to specify the PHY type?
With MMF cables shorter than 100 metres (to prevent over-driving the far-end receiver) and with MMF cables longer than 300 metres (to lessen the effect of differential mode delay)
R = LAN PHY; W = WAN PHY
Switch(config)#errdisable detect cause storm-control
Configure the appropriate values manually on both ends of the link

44. What combinations are TCAM entries composed of?
ARP requests and replies; IP packets requiring an ICMP response; IP broadcasts to be relayed; Routing protocol updates; CDP packets; Packets needing encryption; Packets triggering NAT; Other non-IP packets
Entry not in FIB; FIB table full; IP TTL expired; MTU exceeded; ICMP redirect; Unsupported encapsulation; Tunnelled packets requiring compression or encryption; Access list with 'log' option; NAT must be performed
Value - Mask - and Result (VMR)
Cabling specifications for 10 Gigabit Ethernet

45. What are the basic operations that a frame undergoes as it passes through a multilayer switch?
When one station transmits at the same time as another on a shared medium
A name assigned to a ranges of interfaces
Ingress queueing; Destination MAC lookup (CAM); Destination IP lookup (FIB); Security ACL lookup (TCAM); QoS ACL lookup (TCAM); Layer 3 packet rewrite; Egress queueing
Packets that have been truncated before they were fully received

46. What is 100BASE-T2?
The switch port falls back to default setting of half duplex
Fast Ethernet over 62.5/125 micron multimode fibre (MMF) or 9 micron singlemode fibre (SMF)
Fast Ethernet over 2 pairs EIA/TIA Category 3 - 4 - 5 UTP
Down - static access - trunk or tunnel

47. What is the maximum cabling distance for 1000BASE-SX?
Layer 3 routing information builds and pre-populates a single database of the entire network topology; All table lookups are performed in hardware with the longest matching destination used in forwarding
Store-and-forward
275 metres for 62.5 micron MMF; 550 metres for 50 micron MMF
Switch#show adjacency [{interface}] [summary | detail]

48. What is the DTP negotiation mode of a switch port configured as static access?
1 -2 on one end with 3 -6 on the other end
The Null adjacency
Half duplex
Off

49. When do collisions occur?
25 metres
When one station transmits at the same time as another on a shared medium
Static access - trunk - tunnel or dynamic
1 -2 on one end with 3 -6 on the other end - and 4 -5 on one end with 7 -8 on the other end

50. What is the administrative mode of a switch port that is a member of one VLAN?
Static access or dynamic
When there are more access list entries and Layer 4 operations than available Mask/Value and LOU entries
The table of learned MAC addresses - ports - and VLAN information
Switch(config)#no ip cef

Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?

Major Subjects
Tests & Exams AP CLEP DSST GRE SAT GMAT	Certifications CISSP go to https://www.isc2.org/ PMP ITIL RHCE MCTS More...	IT Skills Android Programming Data Modeling Objective C Programming Basic Python Programming Adobe Illustrator More...	Business Skills Advertising Techniques Business Accounting Basics Business Strategy Human Resource Management Marketing Basics More...
Soft Skills Body Language People Skills Public Speaking Persuasion Job Hunting And Resumes More...	Vocabulary GRE Vocab SAT Vocab TOEFL Essential Vocab Basic English Words For All Global Words You Should Know Business English More...	Languages AP German Vocab AP Latin Vocab SAT Subject Test: French Italian Survival Norwegian Survival More...	Engineering Audio Engineering Computer Science Engineering Aerospace Engineering Chemical Engineering Structural Engineering More...
Health Sciences Basic Nursing Skills Health Science Language Fundamentals Veterinary Technology Medical Language Cardiology Clinical Surgery More...	English Grammar Fundamentals Literary And Rhetorical Vocab Elements Of Style Vocab Introduction To English Major Complete Advanced Sentences Literature Homonyms More...	Math Algebra Formulas Basic Arithmetic: Measurements Metric Conversions Geometric Properties Important Math Facts Number Sense Vocab Business Math More...	Other Major Subjects Science Economics History Law Performing-arts Cooking Logic & Reasoning Trivia

Test your basic knowledge |

Ethernet Technologies

Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?

Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests

Major Subjects

Tests & Exams

Certifications

IT Skills

Business Skills

Soft Skills

Vocabulary

Languages

Engineering

Health Sciences

English

Math

Other Major Subjects

Browse all subjects

Browse all tests

Most popular tests