Practice Test Geeks(ICND1) Interconnecting Cisco Networking Devices Part 1 Practice Test
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WAN Technologies & Network Security Flashcards

7 cards from real ICND1 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Which of the following correctly describes a difference between PPP and HDLC on Cisco serial links?

    Answer: PPP is an open standard supporting multivendor interoperability; Cisco HDLC is proprietary

    PPP is an open, standards-based protocol (RFC 1661) that works between different vendors, while Cisco's HDLC includes a proprietary type field.

  2. What is the role of a crypto map in a Cisco IPsec VPN configuration?

    Answer: It binds the transform set, peer address, and interesting traffic together and is applied to an interface

    A crypto map ties together the ACL (interesting traffic), peer IP, and transform set, then is applied to the outbound interface to activate IPsec.

  3. Which NAT type creates a one-to-one permanent mapping between a private IP address and a public IP address?

    Answer: Static NAT

    Static NAT creates a fixed, permanent one-to-one translation between a specific private address and a specific public address.

  4. An extended ACL numbered 150 is applied inbound on Fa0/0. In what order does the router process ACL entries?

    Answer: Sequentially from top to bottom, stopping at the first match

    ACLs are processed top-to-bottom and the router stops at the first matching entry, making entry order critical.

  5. Which WAN technology delivers internet access over standard telephone lines using frequencies above the voice band, allowing simultaneous voice and data?

    Answer: DSL

    DSL (Digital Subscriber Line) uses higher frequencies on existing copper phone lines, enabling concurrent voice and broadband data.

  6. What happens to a packet that reaches the end of an ACL without matching any entry?

    Answer: It is dropped due to the implicit deny all

    Every Cisco ACL ends with an implicit 'deny any' that discards all packets that do not match any explicit entry.

  7. Which encapsulation type must be configured on both ends of a serial link when connecting Cisco routers to non-Cisco devices?

    Answer: PPP

    PPP is an open standard that interoperates between different vendors, unlike Cisco's proprietary HDLC which only works Cisco-to-Cisco.