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Q1. Which factor would be most influential in choosing multimode fiber optic connections over UTP?
A. signal attenuation
B. required bandwidth
C. required distance
D. electromagnetic interference
E. cost
Answer: C
Q2. What network virtualization technology can be leveraged within the data center to reduce the number of physical devices?
A. VLANs
B. VPLS
C. VDC
D. VSS
Answer: C
Q3. Which two enterprise campus layers are combined in a medium-sized LAN? (Choose two.)
A. core
B. distribution
C. access
D. backbone
E. aggregation
Answer: A,B
Q4. When there is a need for immunity to EMI for connecting locations that are greater than 100 meters apart, which two solutions can be utilized? (Choose two.)
A. multimode fiber
B. Fiber Channel
C. HVDC transmission lines
D. single-mode fiber
E. serial RS-232
F. Gigabit Ethernet 1000BASE-CX
Answer: A,D
Q5. Which of the following three options represents the components of the Teleworker Solution? (Choose three.)
A. Cisco Unified IP Phone
B. Cisco 880 Series Router
C. Aironet Office Extend Access Point
D. Catalyst 3560 Series Switch
E. Cisco 2900 Series Router
F. MPLS Layer 3 VPN
G. Leased lines
Answer: A,B,E
Explanation:
A Cisco ASR is used to terminate Teleworker solutions, not a 2900 series router. Hybrid teleworker uses Aironet, Advanced teleworker uses 880, both use IP phones. google: "at_a_glance_c45-652500.pdf" for details
The Cisco Virtual Office Solution for the Enterprise Teleworker is implemented using the Cisco 800 series ISRs. Each ISR has integrated switch ports that then connect to the user’s broadband connection. The solution uses a permanent always-on IPsec VPN tunnel back to the corporate network. This architecture provides for centralized IT security management, corporate-pushed security policies, and integrated identity services. In addition, this solution supports the enterprise teleworker needs through advanced applications such as voice and video. For example, the enterprise teleworker can take advantage of toll bypass, voicemail, and advanced IP phone features not available in the PSTN.
Enterprise Teleworker Module
The enterprise teleworker module consists of a small office or a mobile user who needs to access services of the enterprise campus. As shown in Figure 2-14, mobile users connect from their homes, hotels, or other locations using dialup or Internet access lines. VPN clients are used to allow mobile users to securely access enterprise applications. The Cisco Virtual Office solution provides a solution for teleworkers that is centrally managed using small integrated service routers (ISR) in the VPN solution. IP phone capabilities are also provided in the Cisco Virtual Office solution, providing corporate voice services for mobile users.
Q6. Which three service categories are supported by an ISR? (Choose three.)
A. voice
B. security
C. data
D. Internet
E. storage
F. satellite
Answer: A,B,C
Q7. Cisco Identity-Based Networking Services relies heavily on the 802.1X protocol. Which other authentication solution is used hand-in-hand with 802.1X to authenticate users for network access?
A. RADIUS
B. LEAP
C. IPsec
D. TACACS
E. ISAKMP
Answer: A
Explanation:
Cisco Identity-Based Network Services The Cisco Identity-Based Network Services solution is a way to authenticate host access based on policy for admission to the network. IBNS supports identity authentication, dynamic provisioning of VLANs on a per-user basis, guest VLANs, and 802.1X with port security.
The 802.1 X protocol is a standards-based protocol for authenticating network clients by permitting or denying access to the network. The 802.1 X protocol operates between the end-user client seeking access and an Ethernet switch or wireless access point (AP) providing the connection to the network. In 802.1 X terminology, clients are called supplicants, and switches and APs are called authenticates. A back-end RADIUS server such as a Cisco Access Control Server (ACS) provides the user account database used to apply authentication and authorization. With an IBNS solution, the host uses 802.IX and Extensible Authentication Protocol over LANs (EAPoL) to send the credentials and initiate a session to the network. After the host and switch establish LAN connectivity, username and password credentials are requested. The client host then sends the credentials to the switch, which forwards them to the RADIUS ACS. The RADIUS ACS performs a lookup on the username and password to determine the credentials' validity. If the username and password are correct, an accept message is sent to the switch or AP to allow access to the client host. If the username and password are incorrect, the server sends a message to the switch or AP to block the host port. Figure 13-4 illustrates the communication flow of two hosts using 802.1X and KAPoL with the switch, AP, and back-end RADIUS server.
Q8. What IPv4 addressing technique allows for the division of addresses into subnets of different sizes?
A. VLSM
B. RIR
C. CIDR
D. NAT
Answer: A
Q9. DRAG DROP
Answer:
Q10. Which is a factor in enterprise campus design decisions?
A. network application characteristics
B. routing protocol characteristics
C. switching latency characteristics
D. packet filtering characteristics
Answer: A