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. What are GigaStack GBICs used for?
CEF glean
Gigabit Ethernet over 1 pair 50 or 62.5 micron MMF or 9 micron SMF (1300 nm laser)
1000BASE-T full duplex followed by 1000BASE-T half duplex
GBIC-to-GBIC connection between stacking Catalyst switches or between any two Gigabit switch ports over a short distance

2. Displays administrative and operational status for a specified interface
Switch#show errdisable detect
The CEF entry version number
70 km for 9 micron SMF; 100 km for 8 micron SMF
Switch#show interfaces {interface}

3. What is the standard for 1000BASE-T?
10 km
IEEE 802.3ab
Switch(config)#errdisable recovery cause {all | {cause-name}}
The CEF entry version number

4. What is half duplex operation?

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

5. Displays the CAM table size with number of MAC addresses
LC - MT-RJ or RJ-45
They are dropped (ARP throttling)
Switch#show mac address-table count [address {mac-address}] [interface {interface}] [vlan {vlan}]
Store-and-forward

6. What RJ-45 pins have been swapped in a Category 5 UTP crossover cable for Fast Ethernet?
Value - Mask - and Result (VMR)
1 -2 on one end with 3 -6 on the other end
10 Gigabit Ethernet over 50 or 62.5 micron MMF (850 nm serial laser)
Creating the VLAN

7. What are the basic operations that a frame undergoes as it passes through a Layer 2 switch?
Ingress queueing; Destination MAC lookup (CAM); Security ACL lookup (TCAM); QoS ACL lookup (TCAM); Egress queueing
Switch#show mac address-table dynamic [address {mac-address}] [interface {interface}] [vlan {vlan}]
40 km
Down - static access - trunk or tunnel

8. What is the name of a Layer 3 logical interface on a switch that represents an entire VLAN?
Switch#show adjacency [{interface}] [summary | detail]
SVI
Switch(config-if)#description {string}
They are dropped (ARP throttling)

9. Displays a list of all interfaces in an error-disabled state
Switch(config)#errdisable detect cause bpduguard
Multilayer Switching
Layer 2 destination address changed to next-hop MAC address; Layer 2 source address changed to outbound interface MAC address; Layer 3 TTL decremented by 1; Layer 3 IP checksum recalculated; Layer 2 frame checksum recalculated
Switch#show interfaces status err-disabled

10. Configures the maximum ageing time for entries in the MAC address table
10 Gigabit Ethernet over 50 or 62.5 micron MMF or 9 micron SMF (1300 nm WWDM laser)
100 metres
Switch(config)#mac address-table aging-time {seconds}
10 Gigabit Ethernet over 9 micron SMF (1310 nm serial laser)

11. What is EMI?
In TCAM Value entries
100 metres
Electromagnetic Interference
IEEE 802.3u

12. Displays the contents of the CAM table
Switch(config)#errdisable recovery interval {seconds}
Switch#show mac address-table [address {mac-address}] [interface {interface}] [vlan {vlan}]
The Layer 3 engine
10GbE operates only at full duplex

13. What tables are maintained by the CEF Layer 3 forwarding engine?
Through exchange of information - which means that for one end to successfully negotiate duplex mode the other end must also be set to autonegotiate
Gigabit Ethernet over 4 pairs EIA/TIA Category 5 UTP
FIB with adjacency table
Dynamic

14. What CEF optimisation replicates the entire FIB table among switch line cards?
Fast Ethernet over 4 pairs EIA/TIA Category 3 - 4 - 5 UTP
Multilayer Switching
Switch(config)#errdisable detect cause storm-control
Distributed CEF (dCEF)

15. What are the symptoms of a duplex setting mismatch between two ends of a link?
Slow response times - low throughput - runts and other input errors on the switch ports
Off
300 seconds
Switch#show interfaces {interface} switchport

16. What is the name of a Layer 3 physical interface on a switch?
Dynamic
40 km
Native routed interface
Switch(config)#errdisable detect cause ilpower

17. Enables error-disable when a storm control threshold has been exceeded on a port
Feature Manager (FM) and Switching Database Manager (SDM)
Switch(config)#interface vlan {vlan-id}
Switch(config)#errdisable detect cause storm-control
Switch#show ip cef

18. What is the original standard for Ethernet (10 Mbps)?
Distributed CEF (dCEF)
IEEE 802.3
Adjacent MAC address (6 octets); Layer 3 engine MAC address (6 octets); EtherType (2 octets)
Switch(config-if)#switchport mode access

19. What is a GigaStack GBIC?
ANSI X3T11 FibreChannel
Adjacent MAC address (6 octets); Layer 3 engine MAC address (6 octets); EtherType (2 octets)
A proprietary connector with a high-data-rate copper cable with enhanced signal integrity and EMI performance
Compiling Access Control Entries (ACE) into the TCAM table

20. Selects an interface-range macro and enters interface configuration mode
Switch(config)#interface range macro {name}
Source IP (/32); Destination IP (/32); Protocol (/16); IP ToS (/8)
A name assigned to a ranges of interfaces
Tunnel

21. Enables error-disable when trunking encapsulation is flapping from one type to another
Incomplete adjacency; Incomplete ARP resolution; Unsupported packet features; ICMP redirect; Packets destined to the router itself; IP options present; Access list evaluation failure; Fragmentation failure
Switch(config)#errdisable detect cause dtp-flap
IEEE 802.3ab
10 Gigabit Ethernet over 50 or 62.5 micron MMF or 9 micron SMF (1300 nm WWDM laser)

22. What are the reasons for packets being dropped by CEF?
Switch(config)#interface vlan {vlan-id}
Source IPX network (/32); Destination IPX network (/32); Destination node (/48); IPX packet type (/16)
Encapsulation failure; Unresolved address; Unsupported protocol; No valid route; No valid adjacency; Checksum error
100 metres

23. Displays error-disabled detection status
The Null adjacency
Switch#show errdisable detect
Down - static access - trunk or tunnel
Switch(config)#default interface {interface}

24. What is the default duplex mode of a Gigabit Ethernet interface?
Carrier Sense Multiple Access Collision Detection
Full duplex
Switch(config-if)#no ip route-cache cef
10 Gigabit Ethernet over 9 micron SMF (1310 nm serial laser)

25. Displays a list with status of all interfaces
Switch#show interfaces status
ANSI X3T11 FibreChannel
Switch(config)#errdisable detect cause channel-misconfig
Switch(config)#errdisable detect cause loopback

26. What are runts?
On
The Layer 3 forwarding engine
Process the first packet in a traffic flow to determine the destination
Packets that have been truncated before they were fully received

27. What is the administrative mode of a switch port that carries traffic for multiple VLANs?
Trunk or dynamic
Numeric values that represent what action to take after the TCAM lookup occurs
Partition and tune the TCAM on some Catalyst switches into areas for different functions
Switch(config-if)#duplex {auto | full | half}

28. Creates an interface-range macro
Gigabit Interface Converter (GBIC) or Small Form factor Pluggable (SFP)
Switch(config)#errdisable detect cause security-violation
Switch(config)#define interface-range {macro-name} {type} {module}/{number} [- {number}] [ - {type} {module}/{number} ...]
Trunk

29. What are the basic operations that a frame undergoes as it passes through a multilayer switch?
Ingress queueing; Destination MAC lookup (CAM); Destination IP lookup (FIB); Security ACL lookup (TCAM); QoS ACL lookup (TCAM); Layer 3 packet rewrite; Egress queueing
Routing table and ARP table
Cabling specifications for Gigabit Ethernet
CEF glean

30. Changes an interface to a layer 3 interface and erases all layer 2 interface configurations
Listen to the first packet and put its resulting destination in the MLS cache; Route subsequent packets in the same flow based on the MLS cache
Switch(config-if)#no switchport
Switch#clear mac address-table [dynamic] [address {mac-address}] [interface {interface}] [vlan {vlan}]
Switch#show adjacency [{interface}] [summary | detail]

31. Sets the duplex mode of an Ethernet or Fast Ethernet interface
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)#duplex {auto | full | half}
Down - static access - trunk or tunnel
R = LAN PHY; W = WAN PHY

32. What is the default duplex mode of a 10 Mbps Ethernet interface?
A switch port that has been shut down automatically due to a serious error condition
Source MAC (/48); Destination MAC (/48); Ethertype (/16)
Encapsulation failure; Unresolved address; Unsupported protocol; No valid route; No valid adjacency; Checksum error
Half duplex

33. What is the maximum cabling distance for Fast Ethernet over 62.5/125 micron multimode fibre?
Cabling specifications for Gigabit Ethernet
IEEE 802.3ab
Switch(config)#errdisable detect cause vmps
400 metres half duplex and 2000 metres full duplex

34. What connectors can be used with GBIC modules?
SC fibre optic or RJ-45 UTP
Switch(config)#errdisable detect cause rootguard
Source IP (/32); Destination IP (/32); Protocol (/16); ICMP code (/8); ICMP type (/4); IP type of service (ToS) (/8)
Switch(config)#errdisable detect cause bpduguard

35. What is the name of the CEF engine that forwards packets in hardware?
Cisco Express Forwarding
Switch(config-if)#duplex {auto | full | half}
Switch(config)#errdisable detect cause {all | {cause-name}}
The Layer 3 forwarding engine

36. What happens to subsequent packets destined for FIB entries in CEF glean state?
Switch(config)#errdisable detect cause security-violation
They are dropped (ARP throttling)
Source IP (/32); Destination IP (/32); Protocol (/16); IP ToS (/8); IGMP message type (/8)
10GbE operates only at full duplex

37. What is full duplex operation?
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
Stations can transmit and receive at the same time because switched Ethernet removes the possibility of collisions
A three-fold combination of 0 - 1 and X (don't care)
Through exchange of information - which means that for one end to successfully negotiate duplex mode the other end must also be set to autonegotiate

38. How are ternary combinations implemented?
400 metres half duplex and 2000 metres full duplex
Switch(config-if)#no ip route-cache cef
With a mask value in addition to binary values to decide which keys in a table are relevant
Value - Mask - and Result (VMR)

39. What are the common PMD types for 10 Gigabit Ethernet?
10GbE operates only at full duplex
Enable error-disable for all possible causes
10GBASE-SR/SW - 10GBASE-LR/LW - 10GBASE-ER/EW - 10GBASE-LX4/LW4 - 10GBASE-CX4
Switch#show errdisable detect

40. How is link duplex mode determined on Fast Ethernet links configured to autonegotiate?
Through exchange of information - which means that for one end to successfully negotiate duplex mode the other end must also be set to autonegotiate
Route caching and topology based
When the Spanning Tree Protocol (STP) has put the switch port in learning or forwarding state
SC fibre optic or RJ-45 UTP

41. Removes entries from the CAM table
R = LAN PHY; W = WAN PHY
Switch#clear mac address-table [dynamic] [address {mac-address}] [interface {interface}] [vlan {vlan}]
Trunk or dynamic
Switch(config)#errdisable detect cause loopback

42. How are packets marked before being sent to the CEF Layer 3 engine for further processing?
Routing table and ARP table
CEF punt
Accelerated CEF (aCEF)
Switch(config)#errdisable recovery interval {seconds}

43. What is the content of TCAM Mask entries?

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

44. Enables error-disable for errors when assigning a port to a dynamic VLAN through a VMPS
Switch(config)#errdisable detect cause vmps
Switch#show ip cef
LC - MT-RJ or RJ-45
Cabling specification for 10 Mbps Ethernet over Unshielded Twisted Pair (UTP) cabling

45. What are the classes of Physical Media Dependent (PMD) interfaces defined by IEEE 802.3ae?
On
SVI
IEEE 802.3ab
LAN PHY and WAN PHY

46. What CEF adjacency is used to switch packets destined for the null interface?
The Null adjacency
10GbE operates only at full duplex
Switch#show mac address-table dynamic [address {mac-address}] [interface {interface}] [vlan {vlan}]
Switch#show ip cef

47. What is the name of the CEF engine that maintains routing information in software?
Switch(config)#errdisable detect cause {all | {cause-name}}
10 km
Static access or trunk
The Layer 3 engine

48. What is 10GBASE-ER/EW?
10 Gigabit Ethernet over 9 micron SMF (1550 nm serial laser)
Accelerated CEF (aCEF) and Distributed CEF (dCEF)
The adjacency table
Static access or dynamic

49. What information is stored in CAM?
Source IP (/32); Destination IP (/32); Protocol (/16); ICMP code (/8); ICMP type (/4); IP type of service (ToS) (/8)
The Null adjacency
The table of learned MAC addresses - ports - and VLAN information
Switch#show ip cef {network} [{mask}] [longer-prefixes] [detail]

50. What combinations are TCAM entries composed of?
Adjacent MAC address (6 octets); Layer 3 engine MAC address (6 octets); EtherType (2 octets)
Value - Mask - and Result (VMR)
Compiling Access Control Entries (ACE) into the TCAM table
Multilayer Switching

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