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 is 10GBASE-LR/LW?
10 Gigabit Ethernet over 9 micron SMF (1310 nm serial laser)
Switch#show interfaces {interface}
LC - MT-RJ or RJ-45
R = LAN PHY; W = WAN PHY

2. Changes an interface to a layer 3 interface and erases all layer 2 interface configurations
Tunnel
A three-fold combination of 0 - 1 and X (don't care)
Switch#show mac address-table [address {mac-address}] [interface {interface}] [vlan {vlan}]
Switch(config-if)#no switchport

3. Removes entries from the CAM table
Switch#clear mac address-table [dynamic] [address {mac-address}] [interface {interface}] [vlan {vlan}]
The CEF entry version number
Switch#show cef not-cef-switched
Switch(config)#errdisable detect cause dhcp-rate-limit

4. What is the TCAM Value and Mask for an extended IP access list using TCP/UDP?
Source IP (/32) - Destination IP (/32) - Protocol (/16) - IP ToS (/8) - Source port (/16) - Source operator (/4) - Destination port (/16) - Destination operator (/4)
1000BASE-T full duplex followed by 1000BASE-T half duplex
Switch(config)#errdisable detect cause bpduguard
Switch(config)#errdisable detect cause l2ptguard

5. Displays the CAM table size with number of MAC addresses
10 km
Switch#show mac address-table count [address {mac-address}] [interface {interface}] [vlan {vlan}]
Compiling Access Control Entries (ACE) into the TCAM table
Static access or trunk

6. What is an interface-range macro?
Switch#show ip cef
A name assigned to a ranges of interfaces
Switch(config)#errdisable detect cause rootguard
Ingress queueing; Destination MAC lookup (CAM); Security ACL lookup (TCAM); QoS ACL lookup (TCAM); Egress queueing

7. How does topology based switching work?
Ingress queueing; Destination MAC lookup (CAM); Security ACL lookup (TCAM); QoS ACL lookup (TCAM); Egress queueing
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
Through exchange of information - which means that for one end to successfully negotiate duplex mode the other end must also be set to autonegotiate
Switch(config)#errdisable detect cause pagp-flap

8. Enables error-disable for errors related to 802.1x security
Switch#show mac address-table [address {mac-address}] [interface {interface}] [vlan {vlan}]
300 metres for 50 or 62.5 micron MMF; 10 km for 9 micron SMF
Mask bits set to 1 for Value bits of interest and 0 for Value bits that don't matter
Switch(config)#errdisable detect cause security-violation

9. How are packets marked before being sent to the CEF Layer 3 engine for further processing?
Fast Ethernet over 2 pairs EIA/TIA Category 3 - 4 - 5 UTP
CEF punt
Switch#show interfaces {interface}
Switch(config)#mac address-table aging-time {seconds}

10. What is the DTP negotiation mode of a switch port configured as dynamic?
275 metres for 62.5 micron MMF; 550 metres for 50 micron MMF
Cisco Express Forwarding
On
Switch(config)#errdisable detect cause ilpower

11. Sets the duplex mode of an Ethernet or Fast Ethernet interface
Switch(config-if)#duplex {auto | full | half}
Source MAC (/48); Destination MAC (/48); Ethertype (/16)
Switch(config)#errdisable detect cause l2ptguard
The Discard adjacency

12. What is 10GBASE-X?
Switch(config)#errdisable detect cause storm-control
Cabling specifications for 10 Gigabit Ethernet
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
Enable error-disable for all possible causes

13. What mechanism does the TCAM provide for Layer 4 comparisons involving gt - lt - neq or range operators?
Switch(config)#errdisable detect cause dtp-flap
LOU registers
A three-fold combination of 0 - 1 and X (don't care)
Trunk

14. What is the maximum cabling distance for 1000BASE-LX/LH?
The table of learned MAC addresses - ports - and VLAN information
Switch(config-if)#switchport mode access
Interconnecting switches in a campus network
550 metres for 50 or 62.5 micron MMF; 10 km for 9 micron SMF

15. What is 10GBASE-ER/EW?
SC or MT-RJ
10GBASE-SR/SW - 10GBASE-LR/LW - 10GBASE-ER/EW - 10GBASE-LX4/LW4 - 10GBASE-CX4
100 metres
10 Gigabit Ethernet over 9 micron SMF (1550 nm serial laser)

16. What are the 1000BASE-X transceiver module form factors used in Cisco Catalyst switches?
Logical Operation Unit
Switch(config)#mac address-table aging-time {seconds}
Gigabit Interface Converter (GBIC) or Small Form factor Pluggable (SFP)
The switch port falls back to default setting of half duplex

17. What is the default age-out time for stale entries in the CAM table?
Switch#show cef not-cef-switched
66-300 metres for 50 micron MMF; 33 metres for 62.5 micron MMF
300 seconds
SC fibre optic or RJ-45 UTP

18. What is the administrative mode of a switch port that uses DTP to negotiate its operational mode?
Interconnecting with existing Synchronous Optical Network (SONET) or Synchronous Digital Hierarchy (SDH) networks
FIB with adjacency table
Dynamic
ANSI X3T11 FibreChannel

19. How are the TCAM Mask/Value pairs evaluated?
Configure the appropriate values manually on both ends of the link
Switch(config)#errdisable detect cause unicast-flood
Switch(config)#errdisable detect cause dhcp-rate-limit
In parallel revealing the best (longest) match in a single table lookup

20. Enables error-disable for Bridge Protocol Data Units (BPDU) received on ports configured for STP PortFast
Switch#show mac address-table dynamic [address {mac-address}] [interface {interface}] [vlan {vlan}]
Ternary Content-Addressable Memory
Switch(config)#errdisable detect cause bpduguard
UTP Fast Ethernet and Gigabit Ethernet

21. What is MLS?
Cabling specification for 10 Mbps Ethernet over Unshielded Twisted Pair (UTP) cabling
The adjacency table
Multilayer Switching
Source IP (/32) - Destination IP (/32) - Protocol (/16) - IP ToS (/8) - Source port (/16) - Source operator (/4) - Destination port (/16) - Destination operator (/4)

22. Configures the maximum ageing time for entries in the MAC address table
Gigabit Ethernet over 1 pair 50 or 62.5 micron MMF (850 nm laser)
Switch(config)#mac address-table aging-time {seconds}
Source MAC (/48); Destination MAC (/48); Ethertype (/16)
Full duplex only

23. What is WAN PHY used for?
Switch(config-if)#speed {10 | 100 | 1000 | auto}
10GBASE-SR/SW - 10GBASE-LR/LW - 10GBASE-ER/EW - 10GBASE-LX4/LW4 - 10GBASE-CX4
Interconnecting with existing Synchronous Optical Network (SONET) or Synchronous Digital Hierarchy (SDH) networks
Compiling Access Control Entries (ACE) into the TCAM table

24. What information is stored in CAM?
Cabling specification for 10 Mbps Ethernet over Unshielded Twisted Pair (UTP) cabling
The table of learned MAC addresses - ports - and VLAN information
XENPAK - X2 - or SFP+
Switch#show running-config interface {interface}

25. Disables CEF operation on an interface
Static access or trunk
Switch(config)#errdisable detect cause udld
Logical Operation Unit
Switch(config-if)#no ip route-cache cef

26. Enables error-disable for conditions that trigger port security configured on a port
Full duplex if only one of the two stacking connectors is used; Half duplex over a shared bus if if both connectors are used
Switch(config)#errdisable detect cause psecure-violation
Switch(config)#mac address-table static {mac-address} vlan {vlan} interface {interface}
Partition and tune the TCAM on some Catalyst switches into areas for different functions

27. Enables error-disable for rate-limiting of DHCP snooping
Switch(config)#errdisable detect cause l2ptguard
Switch(config)#errdisable detect cause dhcp-rate-limit
Switch(config-if)#no switchport
The switch port falls back to default setting of half duplex

28. What is the default duplex mode of a Gigabit Ethernet interface?
Electromagnetic Interference
Full duplex
Forwarding Information Base
Switch#show adjacency [{interface}] [summary | detail]

29. What tables are maintained by the CEF Layer 3 forwarding engine?
10 km
The table of learned MAC addresses - ports - and VLAN information
Manually by administratively disabling and re-enabling the port
FIB with adjacency table

30. What CEF adjacency is used to switch packets that can't be forwarded normally?
The Drop adjacency
Switch(config)#errdisable detect cause gbic-invalid
The CEF entry version number
When the Spanning Tree Protocol (STP) has put the switch port in learning or forwarding state

31. What is the standard for 10 Gigabit Ethernet (10GbE)?
IEEE 802.3ae
Logical Operation Unit
Gigabit Ethernet over 1 pair 8 or 9 micron SMF (1550 nm laser)
300 metres for 50 or 62.5 micron MMF; 10 km for 9 micron SMF

32. What RJ-45 pins must be swapped in a Category 5 UTP crossover cable for Gigabit Ethernet?
Ingress queueing; Destination MAC lookup (CAM); Security ACL lookup (TCAM); QoS ACL lookup (TCAM); Egress queueing
10GbE operates only at full duplex
Switch#clear mac address-table [dynamic] [address {mac-address}] [interface {interface}] [vlan {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

33. What is EMI?
Ingress queueing; Destination MAC lookup (CAM); Destination IP lookup (FIB); Security ACL lookup (TCAM); QoS ACL lookup (TCAM); Layer 3 packet rewrite; Egress queueing
Electromagnetic Interference
American National Standards Institute
A switch port that has been shut down automatically due to a serious error condition

34. Enables error-disable for errors when assigning a port to a dynamic VLAN through a VMPS
550 metres for 50 or 62.5 micron MMF; 10 km for 9 micron SMF
Switch(config)#errdisable detect cause vmps
Half duplex
Through exchange of information - which means that for one end to successfully negotiate duplex mode the other end must also be set to autonegotiate

35. Selects an interface-range macro and enters interface configuration mode
Accelerated CEF (aCEF) and Distributed CEF (dCEF)
Switch(config)#interface range macro {name}
By electrical signalling so that either end of a link can determine what speed the other end is trying to use
Switch(config)#errdisable recovery cause {all | {cause-name}}

36. What CEF optimisation replicates the entire FIB table among switch line cards?
Switch(config)#errdisable detect cause {all | {cause-name}}
Source MAC (/48); Destination MAC (/48); Ethertype (/16)
10GbE operates only at full duplex
Distributed CEF (dCEF)

37. What is 1000BASE-ZX?
The Punt adjacency
Gigabit Ethernet over 1 pair 8 or 9 micron SMF (1550 nm laser)
Switch(config)#errdisable detect cause channel-misconfig
By Mask/Value - where each unique mask has eight value patterns associated with it

38. What function is performed by the Switching Database Manager (SDM)?
The Punt adjacency
Partition and tune the TCAM on some Catalyst switches into areas for different functions
Switch#show mac address-table count [address {mac-address}] [interface {interface}] [vlan {vlan}]
Native routed interface

39. What is the DTP negotiation mode of a switch port configured as trunk?
On
Gigabit Ethernet over 1 pair 8 or 9 micron SMF (1550 nm laser)
Cabling specification for 10 Mbps Ethernet over Unshielded Twisted Pair (UTP) cabling
Switch(config)#errdisable detect cause security-violation

40. What is the operational mode of a switch port that uses DTP negotiation?
Switch(config)#errdisable detect cause psecure-violation
Static access or trunk
Switch#show cef not-cef-switched
The Discard adjacency

41. Sets the speed of a Fast Ethernet or Gigabit Ethernet interface
Source IP (/32) - Destination IP (/32) - Protocol (/16) - IP ToS (/8) - Source port (/16) - Source operator (/4) - Destination port (/16) - Destination operator (/4)
Gigabit Interface Converter (GBIC) or Small Form factor Pluggable (SFP)
Switch(config-if)#speed {10 | 100 | 1000 | auto}
Switch#show ip cef

42. What information is recorded in CAM as frames arrive on a switch port?
Routing table and ARP table
Wide-Wavelength Division Multiplexing
Tunnel
Source MAC address; Port of arrival; VLAN; Time stamp

43. When are mode-conditioning patch leads required with 1000BASE-LX/LH transceivers?
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)
Packets that have been truncated before they were fully received
1000BASE-CX - 1000BASE-T - 1000-BASE-SX - 1000-BASE-LX/LH and 1000-BASE-ZX
With a mask value in addition to binary values to decide which keys in a table are relevant

44. Enables error-disable for errors with Layer 2 Protocol Tunnelling
Gigabit Ethernet over 4 pairs EIA/TIA Category 5 UTP
Switch(config)#errdisable detect cause l2ptguard
When there are more access list entries and Layer 4 operations than available Mask/Value and LOU entries
In parallel revealing the best (longest) match in a single table lookup

45. When should CEF be disabled?
Switch#clear mac address-table [dynamic] [address {mac-address}] [interface {interface}] [vlan {vlan}]
Only temporarily for debugging purposes
7 100BASE-T2 full duplex; 6 100BASE-TX full duplex; 5 100BASE-T2 half duplex; 4 100BASE-T4; 3 100BASE-TX; 2 10BASE-T full duplex; 1 10BASE-T
Gigabit Interface Converter (GBIC) or Small Form factor Pluggable (SFP)

46. What changes are made to packets by the CEF packet rewrite engine just before forwarding?
Gigabit Ethernet over 1 pair Shielded Twisted Pair (STP) cabling
Ternary Content-Addressable Memory
The CEF epoch number
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

47. What are the supported duplex mode settings for Gigabit Ethernet on Cisco switches?
A name assigned to a ranges of interfaces
Interconnecting switches in a campus network
Static access - trunk - tunnel or dynamic
Full duplex only

48. Displays error-disabled detection status
Accelerated CEF (aCEF)
Switch#show errdisable detect
Native routed interface
When there are more access list entries and Layer 4 operations than available Mask/Value and LOU entries

49. What is the administrative mode of a switch port that is a member of one VLAN?
The Layer 3 forwarding engine
Content-Addressable Memory
Security and QoS ACLs
Static access or dynamic

50. What is the name of the CEF engine that maintains routing information in software?
Switch(config)#errdisable detect cause arp-inspection
10 km
Adjacent MAC address (6 octets); Layer 3 engine MAC address (6 octets); EtherType (2 octets)
The Layer 3 engine

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