ICND1 WAN Technologies & Network Security 5

Question 1

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

Accepted Answer

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

Answer

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

Question 2

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

Accepted Answer

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

Answer

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

Question 3

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

Accepted Answer

Static NAT

Answer

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

Question 4

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

Accepted Answer

Sequentially from top to bottom, stopping at the first match

Answer

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

Question 5

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

Accepted Answer

DSL

Answer

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

(ICND1) Interconnecting Cisco Networking Devices Part 1 Practice Test

(ICND1) Interconnecting Cisco Networking Devices Part 1 Practice Test

ICND1 WAN Technologies & Network Security 5