1. “router # configure terminal
router (config)# interface fa 0/0
router (config-if)# ip address 172.16.5.1 255.255.255.0
router (config-if)#interface serial 1/0
router (config-if)#ip address 172.16.6.1 255.255.255.0″

2. “router # configure terminal
router (config)# interface fa 0/0
router (config-if)# ip address 172.16.64.1 255.255.248.0
router (config-if)#interface serial 0/0
router (config-if)#ip address 172.16.80.1 255.255.248.0″

3. “router # configure terminal
router (config)# interface fa 0/1
router (config-if)# ip address 172.16.64.1 255.255.240.0
router (config-if)#interface serial 0/0
router (config-if)#ip address 172.16.80.1 255.255.240.0″

4. “router # configure terminal
router (config)# interface fa 0/1
router (config-if)# ip address 172.16.5.1 255.255.240.0
router (config-if)#interface serial 0/0
router (config-if)#ip address 172.16.6.1 255.255.240.0″

5. “router # configure terminal
router (config)# interface fa 0/1
router (config-if)# ip address 172.16.80.1 255.255.240.0
router (config-if)#interface serial 0/0
router (config-if)#ip address 172.16.96.1 255.255.240.0″
The correct answer is 3.

This class B address with 4 subnet bits will have a mask of /20 or 255.255.240.0. The 5th subnet has subnet bits 0100 in the 3rd octet; the 6th subnet has subnet bits 0101 in the 3rd octet. The first host has host bits 0000 00000001 in the 3rd and 4th octet. When concatenated the bits for the FastEthernet are 01000000 00000001 or 64.1 decimal; for the Serial interface the bits are 01010000 00000001 or 80.1 decimal.

Your PC’s MAC address is 0010.1111.2222. Your PC gets its IPv6 address using stateless autoconfiguration. What is your PC’s EUI-64 format interface ID?

1. 0010.11FF.FE11.2222
2. 0210.1111.FFEE.2222
3. 0210.1100.0011.2222
4. 0210.11FF.FE11.2222
5. 0000.0010.1111.2222

The correct answer is 4.

The EIU-64 format interface ID is created from the MAC address by setting the 7th bit of the 1st octet (the “unique” bit) to 1 and inserting FFFE into the middle of the address. In this scenario, the resulting interface ID is 0210.11FF.FE11.2222.

References:
For more questions like these, try our CCNA Cert Check

Related Courses:
ICND1 — Interconnecting Cisco Network Devices 1
ICND2 — Interconnecting Cisco Network Devices 2
CCNAX — CCNA Boot Camp v1.1

Service Provider Certification

CCIP

Cisco Certified Internetwork Professional (CCIP) validates advanced knowledge and skills required to manage service provider infrastructures. With a CCIP certification, a network professional working in a service provider organization demonstrates competencies in infrastructure IP networking solutions.

Prerequisite: Valid CCNA certification, or any CCIE certification.

Required Cisco Exams: 
642–902 ROUTE
642–642 QOS
642–611 MPLS
642–661 BGP

CCIE Service Provider

Achieving CCIE Service Provider certification declares your expert-level ability to perform large-scale maintenance, troubleshoot implementation, and manage support of applications. It demonstrates that you have the skills to build extensible service provider infrastructures that deliver managed services.

Prerequisite: While there are no formal prerequisites for CCIE Service Provider certification, you are expected to have an in-depth understanding of the topics in the exam blueprints and are strongly encouraged to have three to five years of job experience before attempting certification.

Required Cisco Exams: 
Step One: CCIE Service Provider Written Exam
You must pass the two-hour written exam that tests your knowledge of implementing, troubleshooting, and optimizing features and technologies, such as Packet over SONET, IP over DWDM, GE/10GE, BGP, IGP Routing, LDP, MPLS and MPLS TE, Multicast, HA, QoS, and Layer 2 and 3 VPNs, before scheduling the lab exam.

Step Two: CCIE Service Provider Lab Exam
The CCIE Service Provider lab exam is an eight-hour, hands-on exam which requires you to configure a series of networks to given specifications.

It is similar to the CCIE Routing and Switching lab, with more emphasis on BGP, OSPF, ISIS, multicast, and Quality of Service. Knowledge of troubleshooting is an important skill, and you are expected to diagnose and solve issues during the lab exam. You must make an initial attempt of the CCIE Service Provider lab exam within 18 months of passing the CCIE Service Provider written exam.

CCNA Service Provider Operations

Cisco’s Certified Network Associate in Service Provider Operations (CCNA SP Operations) certification validates basic knowledge and skills in a prescriptive troubleshooting environment within carrier class IP NGN core network infrastructure.

These skills are comparable to those of a Tier I support engineer, and include incident (event), fault, configuration, change, and performance management procedures, along with NMS tools and protocols.

Prerequisite: Valid CCENT, CCNA, or any CCIE certification.

Required Cisco Exam: 640–760 SSPO

CCNP Service Provider Operations

The Cisco Certified Network Professional in Service Provider Operations (CCNP SP Operations) program validates knowledge and skills required to troubleshoot and maintain service provider IP NGN core (PE-PE and PE-CE) network infrastructures.

With a CCNP SP Operations certification, you have proven that you have the skills required to isolate network performance problems, implement proactive fault measures using operations management processes, frameworks, and network management systems.

Covering topics that should be familiar to any Tier II or Tier III support engineer, the curriculum includes maintaining carrier class routing protocol environments, MPLS VPN and TE deployments, and QoS mechanisms using Cisco IOS and IOS XR.

Prerequisite: Valid CCNA SP Operations certification, or any CCIE certification.

Required Cisco Exams: 
642–770 OFCN
642–775 MSPRP
642–780 MSPVM
642–785 MSPGS

CCIE Service Provider Operations

Certifies expert-level and skills of an expert-level (Tier III or Tier IV support) operations engineer to troubleshoot and maintain complex service provider IP NGN core (PE-PE and PE-CE) network infrastructures in both IOS and IOS XR operating environments, plus validate broad theoretical knowledge of operations management processes, frameworks, and network management systems.

Exam topics generally cover SP technologies, Operations Process Management, and NMS tools. There are also questions guided by ITIL v3 Core Service Lifecycle Framework, and other related topic areas may also appear.

Prerequisite: CCNP SP Operations is strongly recommended, as is 3–5 years of related job experience.

Required Cisco Exams
Step One: CCIE Service Provider Operations Written Exam
You must pass the two-hour written exam covering concepts and equipment commands related to packet-based networking infrastructure before you are eligible to schedule the lab exam.

Step Two: CCIE Service Provider Operations Lab Exam
The eight-hour practical exam tests your ability to configure actual equipment and get a service provider network running in a timed test situation.

Related Courses
Cisco Certifications

Your router has the following interfaces configured:
Loopback 0: 10.2.2.2/24
Loopback 10: 10.1.1.1/24
FastEthernet 0/0: 172.16.1.1/24
FastEthernet 0/1: 172.16.2.2/24

You configure OSPF. What is the OSPF router ID?

1. 10.2.2.2
2. 10.1.1.1
3. 172.16.1.1
4. 172.16.2.2
5. There is not enough information to determine the router ID.

The correct answer is 1

If the router ID is not specified with the router-id command and if the router has loopback interfaces with IP addresses when OSPF is configured, the OSPF router ID is the highest such address. Otherwise the router ID is the highest IP address configured on an active interface.

References:
For more questions like these, try our CCNA Cert Check

Related Courses:
ICND1 — Interconnecting Cisco Network Devices 1
ICND2 — Interconnecting Cisco Network Devices 2
CCNAX — CCNA Boot Camp v1.1

Routing and Switching Certifications

CCNP

The Cisco Certified Network Professional (CCNP) certification confirms your familiarity with the daily job tasks of professional network engineers who work on complex security, voice, wireless and video network solutions. Emphasizing the skills required to plan, implement, verify and troubleshoot local and wide-area enterprise networks, the initials “CCNP” after your name are more valuable now than ever.

Prerequisite: At least one year of networking experience and a valid CCNA certification or any CCIE certification.

Required Cisco Exams: 
642–902 ROUTE
642–813 SWITCH
642–832 TSHOOT

CCIE

Cisco Certified Internetwork Expert (CCIE®) certifies the expert-level skills required of network engineers to plan, prepare, operate monitor, and troubleshoot complex, converged network infrastructure. Professionals who achieve CCIE have demonstrated their technical skills at the highest level.

Prerequisite: There are no formal prerequisites for CCIE certification but candidates are expected to have an in-depth understanding of the topics in the exam blueprints and strongly encouraged to have three to five years of job experience before attempting certification.

Required Cisco Exams: 
Step One: CCIE Routing and Switching Written Exam
You must pass the two-hour, written qualification exam which covers networking concepts and some equipment commands before you are eligible to schedule the lab exam. The written exam now includes new scenario-based questions.

Step Two: CCIE Routing and Switching Lab Exam
The eight-hour lab exam tests your ability to configure actual equipment and troubleshoot the network in a timed test situation. You must pass the lab within three years of passing the written to achieve certification. Your first lab attempt must be made within 18 months of the written exam. The lab now requires hands-on troubleshooting, in addition to configuration.

Storage Certifications

CCIE Storage Networking certification designates expert-level knowledge of intelligent storage solutions using multiple transport options over long distances. It certifies that you have the in-depth experience to manage, deploy, and interconnect multiple types of data storage devices and data servers that enterprise users rely on today.

Success on the CCIE Storage Networking written exam and the CCIE Storage Networking lab exam declares that you have expert knowledge implementing and troubleshooting storage area networks, including LANs, MANs, and WANs over Fibre Channel, iSCSI, FCIP, and FICON and that you can demonstrate in-depth understanding of Layer 2 and 3 network infrastructure.

Prerequisite: While there are no formal prerequisites for CCIE Storage Networking certification, you are expected to have an in-depth understanding of the topics in the exam blueprints and are strongly encouraged to have three to five years of job experience before attempting certification.

Required Cisco Exams: 
Step One: CCIE Storage Networking Written Exam
You must pass the two-hour written exam covering topics such as storage device protocols, troubleshooting tools, and storage networking design, applications, and advanced management before you are eligible to schedule the lab exam.

Step Two: CCIE Storage Networking Lab Exam
The CCIE Storage Networking lab exam is an eight-hour, hands-on exam which requires you to configure a series of storage area networks to given specifications. Knowledge of troubleshooting is an important skill, and you are expected to diagnose and solve issues as part of the lab exam. You must make an initial attempt of the CCIE Storage Networking lab exam within 18 months of passing the CCIE Storage Networking written exam.

Related Courses
Cisco Certifications

Unified Communications Certifications

CCNA Voice

Cisco’s CCNA Voice certification is one of three technical “concentrations” released in 2008 in response to a Cisco study that found 69% of IT managers expect to have a dedicated voice specialist role in their IT organization within five years, while only 40% have them today.

CCNA Voice confirms validates your skills in VoIP technologies such as

• IP PBX and telephony
• Call control
• Voicemail solutions

Through the course of preparing for the exam, you’ll also get exposure to the Cisco Unified Communications architecture and design covering mobility, presence, and TelePresence applications. CCNA Voice proves that you are committed to your career, and prepared for these job roles:

• Voice Administrators
• Voice Engineers
• Voice Managers

Prerequisite: Valid CCNA certification or any CCIE certification.

Required Cisco Exam: 642–461 ICOMM v8.0

CCNP Voice

Cisco recently completed a significant upgrade to their CCVP program, including a new name: Cisco Certified Network Professional Voice (CCNP Voice). The topics covered on these new exams better reflect the daily job tasks of Cisco Unified Communications and VoIP professionals and have streamlined the process of getting certified by eliminating the enterprise/commercial option.

Prerequisite: Valid CCNA Voice certification, or any CCIE certification.

Required Cisco Exams:
642–437 CVOICE v8
642–447 CIPT1 v8.0
642–457 CIPT2 v8.0
642–427 TVOICE v8.0
642–467 CAPPS v8.0

CCIE Voice

Achieving CCIE Voice certification declares your expert-level knowledge of Voice over IP (VoIP) solutions in an enterprise environment and informs that you have the skills to help companies accelerate business processes, increase productivity, and speed innovation. Success on the CCIE Voice written exam and the CCIE Voice lab exam means that you are capable of building and configuring complex end-to-end telephony networks, troubleshooting and resolving VoIP-related problems, and ensuring Quality of Service using in-depth understanding of Layer 2 and 3 network infrastructure.

Prerequisite: While there are no formal prerequisites for CCIE Voice certification, you are expected to have an in-depth understanding of the topics in the exam blueprints and are strongly encouraged to have three to five years of job experience before attempting certification.

Required Cisco Exam:
Step One: CCIE Voice Written Exam
You must pass the two-hour written exam covering those technologies and applications that comprise a Cisco enterprise VoIP solution before you are eligible to schedule the lab exam.

Step Two: CCIE Voice Lab Exam
The CCIE Voice lab exam is an eight-hour, hands-on exam which requires you to configure a Cisco enterprise voice solution over an IP network. Although basic network connectivity is provided, you will be responsible for configuring the pre-installed applications to satisfy the requirements of the lab and for troubleshooting important parameters of a voice network, such as Quality of Service, VLANs, gateways, and gatekeepers.

You must pass the lab exam within three years of passing the written exam to achieve CCIE Voice certification. Your first lab attempt must be made within 18 months.

Wireless Certification

CCNA Wireless

Cisco’s CCNA Wireless certification is one of three technical “concentrations” released in 2008 in response to a Cisco study that found that by 2013 the number of companies with a dedicated wireless role is expected to increase by 30%.

The CCNA Wireless certification validates your skills in configuring, implementing, monitoring, supporting, and troubleshooting wireless LANs in small to medium-sized business (SMB) and enterprise networks.

Prerequisite: Valid CCNA certification, or any CCIE certification.

Required Cisco Exam: 640–721 IUWNE

CCNP Wireless

CCNP Wireless certification recognizes the critical importance of professionals who support and manage Cisco wireless LANs and networks. Driven by the need for professionals responsible for the design, implementation, security, and operation of wireless networks and mobility infrastructures, CCNP Wireless certification emphasizes wireless networking principles and theory.

It also recognizes the expertise of wireless professionals who can assess and translate business requirements into technical specifications for successful installations.

Value of CCNP Wireless Certification to Professionals

• Recognizes and validates your professional-level wireless design expertise
• Demonstrates your ability to configure, implement, and manage all aspects of Cisco wireless LANs
• Prepares individuals interested in pursuing a Cisco Certified Internetwork Expert (CCIE) Wireless certification

Prerequisite: Valid CCNA Wireless certification, or any CCIE certification.

Required Cisco Exams: 
642–746 IUWMS
642–731 CUWSS
642–741 IUWVN
642–736 IAUWS

CCIE Wireless

Passing the CCIE Wireless certification exams demonstrates your broad theoretical knowledge of wireless networking and your solid understanding of Cisco Wireless LAN technologies. CCIE Wireless certification validates that you have the expertise to design and manage wireless networks and to make mission-critical and business-critical wireless network decisions.

Prerequisite: While there are no formal prerequisites for CCIE Wireless certification, you are expected to have an in-depth understanding of the topics in the exam blueprints and are strongly encouraged to have three to five years of job experience before attempting certification.

Required Cisco Exams:
Step One: CCIE Wireless Written Exam
You must pass the two-hour written exam covering planning, designing, implementing, operating, and troubleshooting Enterprise WLAN networks before you are eligible to schedule the lab exam.

Step Two: CCIE Wireless Lab Exam
The CCIE Wireless lab exam is an eight-hour, hands-on exam which focuses on implementing Enterprise WLAN solutions, including the autonomous infrastructure, unified infrastructure, unified controllers and APs, unified WCS and location, and implementing Voice over Wireless.

Knowledge of troubleshooting is an important skill, and you are expected to diagnose and solve issues as part of the CCIE Wireless lab exam. You must pass the lab exam within three years of passing the written exam to achieve CCIE Wireless certification. Your first lab exam attempt must be made within 18 months.

Related Courses
Cisco Certifications

interface s0/0/0
ip address 209.165.200.1 255.255.255.0
ip nat outside
interface fa0/0
ip address 10.1.1.1 255.255.255.0
ip nat inside
access-list 1 permit 10.1.1.0 0.0.0.255

Two PCs on the network have addresses 10.1.1.5 and 10.1.1.10.

Which command, when added to the router’s configuration, causes the PCs’ addresses to be translated to the router’s s0/0/0 address?

1. ip nat inside source list 1 209.165.200.1 overload
2. ip nat inside source list 1 interface s0/0/0 overload
3. ip nat inside source list 1 interface s0/0/0
4. ip nat inside source 1 interface s0/0/0 overload

The correct answer is 2.

The “ip nat inside source list 1 interface s0/0/0 overload” command specifies that source addresses permitted by access list 1 will be translated to the address of interface s0/0/0. The “overload” keyword indicates that PAT is used so that one outside address represents many inside addresses, using the port number to distinguish between the translations.

References:
For more questions like these, try our CCNA Cert Check

Related Courses:
ICND1 — Interconnecting Cisco Network Devices 1
ICND2 — Interconnecting Cisco Network Devices 2
CCNAX — CCNA Boot Camp v1.1

Design Certifications

CCDA — Cisco Certified Design Associate

CCDA certification indicates a foundation or apprentice knowledge of network design for the Cisco converged network. CCDA certification designates professionals who can design routed and switched network infrastructures and services involving LAN, WAN, and broadband access for businesses and organizations. The exam topics were recently updated to include design methodology, network structure, campus design, enterprise edge, and more.

Prerequisite: CCNA-level knowledge and SWITCH knowledge are needed to prepare for the CCDA certification exam.

Required Cisco Exam: 640–864 DESGN

CCDP — Cisco Certified Design Professional

The CCDP certification indicates advanced journeyman knowledge of intelligent network design concepts and principles. A network professional with CCDP certification can discuss, design, and create advanced addressing and routing, security, network management, data center, and IP multicast complex multilayered enterprise architectures that include virtual private networking and wireless domains.

Prerequisite: Valid CCNA certification and CCDA certification, or any CCIE certification.

Required Cisco Exams:
642–902 ROUTE
642–813 SWITCH
642–874 ARCH

CCDE — Cisco Certified Design Expert

Cisco Certified Design Expert (CCDE) validates advanced network infrastructure design principles and fundamentals for large networks. With a CCDE certification, a network professional demonstrate an ability to develop solutions which address planning, design, integration, optimization, operations, security and ongoing support focused at the infrastructure level for customer networks.

Prerequisite: There are no formal prerequisites for CCDE certification, but it is expected that the candidate will have an in-depth understanding of the topics in the exam blueprints, a minimum of seven years job experience, and a thorough understanding of networking infrastructure principles.

Required Cisco Exams:
Step One: CCDE Written Exam
You must pass the two-hour, written qualification exam which covers advanced networking infrastructure design principles and concepts. Once you pass the written exam, you are then eligible to schedule the practical exam.

Step Two: CCDE Practical Exam
The CCDE Practical exam is a design-scenario exam that tests your ability to perform design analysis, justify design requirements, and develop a design implementation based on best practices. The exam will assess your ability to apply your specific body of knowledge into current business problems of technical network design. The topics covered in the Practical exam are located within the exam blueprint. The exam scenarios will change each instance the exam is delivered, however, the topics will remain the same.

Security Certifications

CCNA Security

More than any other area, security and risk management skills are some of the highly sought across the network, and demand is continuing to grow. The CCNA Security confirms your competency for job roles such as network security specialists or support engineers and security administrators. It also validates installation and troubleshooting skills, as well as monitoring network devices for integrity, confidentiality, and availability. Through your exam preparation, you will get an introduction to core security technologies and also learn how to develop security policies and mitigate risks. These skills will enable you to develop a security infrastructure, recognize vulnerabilities in networks, and detect potential security threats.
Prerequisite: Valid CCNA certification or any CCIE certification.
Required Cisco Exam: 640–553 IINS

CCNP Security – Cisco Certified Network Professional Security

Last year Cisco completed a significant upgrade to their CCSP program, including a new name: Cisco Certified Network Professional Security (CCNP Security). Key changes to the program include:

• Focus on daily job tasks of experienced network security professionals and engineers
• More emphasis on defining service, service levels, and quality of service
• Streamlined process eliminates elective requirements

Prerequisite: Valid CCNA Security certification, valid CCSP certification, or valid CCNA certification plus SND exam pass.
Required Cisco Exams:
642–637 SECURE v1.0
642–627 IPS v7.0
642–647 VPN v1.0
642–617 FIREWALL v1.0

CCIE Security

CCIE Security certification is the industry standard for recognizing network security engineers who have demonstrated expert-level performance implementing, configuring, and troubleshooting Cisco network security solutions.

To earn the CCIE Security certification, you must not only prove your theoretical knowledge of security best practices in the CCIE Security written exam, but you must also demonstrate your skill in the CCIE Security lab exam using real equipment in real-world scenarios. Because of this rigorous process and the expert-level knowledge and skill it requires, CCIE Security certification is one of the most advanced network security certifications available and qualifies you to manage, lead, and design the most complex network security teams and projects.
Prerequisite: While there are no formal prerequisites for CCIE Security certification, you are expected to have an in-depth understanding of the topics in the exam blueprints and are strongly encouraged to have three to five years of job experience before attempting certification.

Required Cisco Exams:
Step One: CCIE Security Written Exam
You must pass the two-hour written exam covering areas such as security protocols, operating systems, application protocols, security technologies, and Cisco security applications before you are eligible to schedule the lab exam.

Step Two: CCIE Security Lab Exam
The CCIE Security lab exam is an eight-hour, hands-on exam which requires you to configure a series of secure networks to given specifications. Knowledge of troubleshooting is an important skill, and you are expected to diagnose and solve issues as part of the CCIE Security lab exam. Your first lab attempt must be made within 18 months.

Related Courses
Cisco Certifications

Foundations Certifications

CCT — Cisco Certified Technician

CCT is specific training for other support technicians who service Cisco networking and system devices. CCT training is available for Routing and Switching, TelePresence, and Data Center Solutions. This training aims to ensure that onsite technicians have the skill set that is required to successfully diagnose and resolve support incidents quickly and effectively.

Required Cisco Exams

640–692 RSTECH
640–893 DCTECH
640–792 TPTECH

CCT Routing and Switching Certification

Cisco Exam 640–692 RSTECH

Cisco CCT Routing & Switching certification focuses on the skills required for onsite support and maintenance of Cisco routers, switches, and operating environments. Technicians in this area must be able to identify Cisco router and switch models, accessories, cabling, and interfaces; understand the Cisco IOS Software operating modes and identify commonly found software; and be able to use the Cisco Command Line Interface (CLI) to connect and service products.

Achieving CCT Routing & Switching certification is considered the best foundation for supporting other Cisco devices and systems.

Prerequisite: None

CCT Data Center Certification

Cisco Exam 640–893 DCTECH

CCT Data Center certification focuses on the skills required for onsite support and maintenance of Cisco Unified Computing Systems and servers. Technicians in this area must be able to identify Cisco UCS components and servers, accessories, cabling and interfaces; understand the Cisco UCS and NX-OS operating modes and identify commonly-found software; and be able to use the Cisco Graphical User Interface to connect and service product components.

Prerequisite: Valid CCT Routing and Switching certification

CCT TelePresence

Cisco Exam 640–792 TPTECH

CCT TelePresence certification focuses on the skills required for onsite support and maintenance of Cisco TelePresence Systems. Technicians in this area must be able to identify Cisco TelePresence models, accessories, cabling, and interfaces; understand the Cisco TelePresence operating modes and identify commonly found software; and be able to use the Cisco Command Line Interface (CLI) to connect and service products and make basic Cisco TelePresence system adjustments.

Prerequisite: Valid CCT Routing and Switching certification

CCENT — Cisco Certified Entry Networking Technician

CCENT certification was created to address the need for networking professionals with a solid practical understanding of modern TCP/IP networks built with Cisco hardware, and it verifies practical skills required for entry-level network support positions. CCENT certification serves as the base of Cisco’s certification pyramid, is similar in nature to CompTIA’s Network+ Certification, and represents the first step in earning your CCNA certification.

Prerequisite: None

Required Cisco Exam: 640–822 ICND1

CCNA — Cisco Certified Network Associate

Earning your Cisco Certified Network Associate (CCNA) is the starting point of many successful and rewarding IT careers. It says to the world — and more importantly, to potential employers — that you have the proven ability to install, configure, operate, and troubleshoot medium-sized routing and switching networks.

Prerequisite: Familiarity with TCP/IP, IP configuration, subnetting, routing tables, and other network standards.

Required Cisco Exams: 640–822 ICND1 + 640–816 ICND2 or 640–802 CCNA

Related Courses
Cisco Certifications

1. interface fa0/0.1
    ip address 10.1.1.1 255.255.0.0
    encapsulation dot1q 1
   interface fa0/0.2
    ip address 10.10.1.1 255.255.0.0
    encapsulation dot1q 10
2. interface fa0/0.1
    ip address 10.1.1.1 255.255.0.0
    encapsulation dot1q vlan 1 native
   interface fa0/0.2
    ip address 10.10.1.1 255.255.0.0
    encapsulation dot1q vlan 10
3. interface fa0/0.1
    ip address 10.1.1.1 255.255.0.0
    encapsulation dot1q 1 native
   interface fa0/0.2
    ip address 10.10.1.1 255.255.0.0
    encapsulation dot1q 10
4. interface fa0/0.1
    ip address 10.1.1.1 255.255.0.0
    encapsulation dot1q vlan 1  
   interface fa0/0.2
    ip address 10.10.1.1 255.255.0.0
    encapsulation dot1q vlan 10
5. interface fa0/0.1
    ip address 10.1.1.1 255.255.0.0 dot1q 1 native
   interface fa0/0.2
    ip address 10.10.1.1 255.255.0.0 dot1q 10

The correct answer is 3.

The “encapsulation dot1q” interface configuration command enables 802.1q trunking and specifies the VLAN number of the subinterface. The “native” keyword is required on the native VLAN, indicating that frames should not be tagged.

References:
For more questions like these, try our CCNA Cert Check

Related Courses:
ICND1 — Interconnecting Cisco Network Devices 1
ICND2 — Interconnecting Cisco Network Devices 2
CCNAX — CCNA Boot Camp v1.1