CCNA 4 Chapter 4 2017 Exam Answers 100%

CCNA 4 Chapter 4 Exam Answers Full

  1. What encapsulation is used with DSL connections?
    A. PPPoE
    B. HDLC
    C. MPLS
    D. PPP
  2. What is the maximum transmission unit that should be set for PPPoE?
    A. 1,400
    B. 1,492
    C. 1,500
    D. 1,548
  3. Which is a disadvantage of PPPoE?
    A. Higher level of security
    B. Smaller MTU per packet
    C. Single point of aggregation for bandwidth
    D. Lower speeds than leased lines
  4. Which statement is correct about GRE tunnels?
    A. GRE uses IPSec security.
    B. GRE uses a protocol of 57.
    C. GRE provides per-packet authentication.
    D. GRE provides packet-in-packet encapsulation.
  5. Which tunnel protocol is a Cisco proprietary protocol?
    A. GRE
    B. PPP
    C. IPSec
    D. SSL
  6. Which layer 3 protocol does GRE use?
    A. Protocol 4
    B. Protocol 43
    C. Protocol 47
    D. Protocol 57
  7. What is the MTU of a Generic Router Encapsulation (GRE) tunnel?
    A. MTU 1476
    B. MTU 1492
    C. MTU 1500
    D. MTU 1528
  8. Which command will help you verify the source and destination of a GRE tunnel?
    A. Router#show ip tunnel 0
    B. Router#show interface tunnel 0
    C. Router#show ip gre
    D. Router#show ip route
  9. Which protocol helps resolve and direct traffic for DMVPN connections?
    A. HSRP
    B. NHRP
    C. ARP
    D. GRE
  10. What is the default keepalive for serial interfaces?
    A. 1 second
    B. 5 seconds
    C. 10 seconds
    D. 60 seconds
  11. Which technology is a point-to-point dedicated line between two private facilities?
    A. DMVPNB. T1 leased line
    C. Wireless WAN
    D. VPN
  12. Which topology will allow for fault tolerance to a single ISP?
    A. Single-homed
    B. Dual-homed
    C. Single multi-homed
    D. Dual multi-homed
  13. Which topology provides no fault tolerance?
    A. Single-homed
    B. Dual-homed
    C. Single multi-homed
    D. Dual multi-homed
  14. What is the function of a keepalive on a dedicated line?
    A. It keeps the connection alive by transmitting small amounts of data.
    B. It sends the clocking information.C. It helps routers know when a connection no longer functions.
    D. It helps identify congestion.
  15. Which technology is primarily used as a point-to-point connection?
    A. DMVPN
    B. MLPPP
    C. E-LAN services
    D. E-Tree services
  16. Which technology provides for a hub-and-spoke design?
    A. E-Tree services
    B. Wireless WAN
    C. E-Line services
    D. E-LAN services
  17. Which technology provides for a dedicated point-to-point design?
    A. E-Tree services
    B. Wireless WAN
    C. E-Line servicesD. E-LAN services
  18. Which technology provides for a mesh design?
    A. E-Tree services
    B. Wireless WAN
    C. E-Line services
    D. E-LAN services
  19. Which is a typical use case for hub-and-spoke WAN design?
    A. Connections for an enterprise spread over a metropolitan area
    B. Connections for an Internet service provider to its customers
    C. Connections between two or more corporate locations
    D. Connection internally inside of a service provider’s network
  20. You are configuring a serial interface for a point-to-point connection. You want to
    verify that clocking has been detected. Which command will help you verify clocking?

    A. Router#show controllers serial 0/0
    B. Router#show clocking serial 0/0
    C. Router#show interface serial 0/0
    D. Router#show ip protocols
  21. In a DS1 serial connection, how many DS0 channels exist?
    A. 12 DS0 channels
    B. 23 DS0 channels
    C. 24 DS0 channelsD. 32 DS0 channels
  22. PPPoE is an example of which topology?
    A. Point-to-point
    B. Hub-and-spoke
    C. Full-mesh
    D. Dual-homed
  23. You are configuring a serial point-to-point connection between two routers and
    need to provide clocking. Which command will configure the router as a DCE device?

    A. Router(config-if)#mode dce
    B. Router(config-if)#dce clocking
    C. Router(config-if)#clock-rate 64000
    D. Router(config-if)#clock 64000
  24. In a leased line point-to-point configuration, what is responsible for sending the
    clocking for data alignment?

    A. Both of the customer’s routers
    B. A single side of the customer’s routers
    C. The CSU/DSU
    D. The Telco provider network
  25. MLPPP is an example of which topology?
    A. Single-homed
    B. Dual-homed
    C. Single multi-homed
    D. Dual multi-homed
  26. DMVPN is an example of which topology?
    A. Point-to-point
    B. Hub-and-spoke
    C. Full-mesh
    D. Dual-homed
  27. Why would you use Multiprotocol Label Switching (MPLS) as a connectivity
    option?

    A. You need support for multicast packets.B. You need support for both IPv4 and IPv6 packets.
    C. You need a high amount of bandwidth.
    D. You require encryption.
  28. What does the term customer edge describe with respect to MPLS?
    A. The provider’s router closest to the customer
    B. The router in the provider’s network that switches customer packets
    C. The customer’s router that sits at the edge of the customer’s network
    D. The path that the packet travels in an MPLS network
  29. What is the field in the layer 3 header that helps MPLS support quality of service?
    A. QoS
    B. DSCP
    C. 802.1p
    D. VOIP
  30. What does the term provider edge describe with respect to MPLS?
    A. The provider’s router closest to the customer edge router
    B. The router in the provider’s network that switches customer packets
    C. The customer’s router that sits at the edge of the customer’s network
    D. The path that the packet travels in an MPLS network
  31. Which WAN option provides a layer 2 connection between sites?
    A. Wireless WAN
    B. GRE tunnels
    C. MPLS
    D. Metro Ethernet
  32. What is MPLS referred to as?
    A. Layer 2 protocol
    B. Layer 2.5 protocol
    C. Layer 3 protocol
    D. Layer 1 protocol
  33. Which benefit of using a secure VPN allows verification that a packet was not
    tampered with in transit?
    A. Authentication
    B. Data integrity
    C. Anti-replay
    D. Confidentiality
  34. Which Cisco technology is often used to create VPN tunnels between sites?
    A. Catalyst switches
    B. Cisco routers
    C. Adaptive Security Appliance
    D. Policy-based routing
  35. You have several remote workers who enter patient information and require a high
    level of security. Which technology would best suit the connectivity for these workers?

    A. GRE tunnels
    B. Wireless WAN
    C. Client SSL/VPN
    D. Site-to-site VPN
  36. You have obtained an ADSL circuit at a remote office for central office
    connectivity. What will you need to configure on the remote office router?

    A. Metro Ethernet
    B. PPPoE
    C. PPP
    D. MPLS
  37. What is the term used to describe the telephone company’s switching office?
    A. Demarcation point
    B. Network edge
    C. Central office
    D. Main data frame
  38. Which is a correct statement about private WANs?
    A. Private WANs have built-in encryption.
    B. Private WANs secure by isolation.
    C. Private WANs use GRE tunnels.
    D. Private WANs use PPPoE for authentication.
  39. What is the definition of an Ethernet virtual circuit (EVC)?
    A. An EVC defines two endpoints for Metro Ethernet customers.
    B. An EVC defines two endpoints for MPLS customers.
    C. An EVC defines the path that a PPPoE packet will travel.
    D. An EVC defines the path that an MPLS packet will travel.
  40. What is the term that defines the access point for the service provider’s services?
    A. Demarcation point
    B. Point of presence
    C. Customer edge
    D. Network edge

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