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Q:

If you wanted to deny all Telnet connections to only network 192.168.10.0, which command could you use?

A) access-list 100 deny tcp 192.168.10.0 255.255.255.0 eq telnet B) access-list 100 deny tcp 192.168.10.0 0.255.255.255 eq telnet
C) access - list 100 deny tcp any 192.168.10.0 0.0.0.255 eq 23 D) access - list 100 deny 192.168.10.0 0.0.0.255 any eq 23

Answer:   C) access - list 100 deny tcp any 192.168.10.0 0.0.0.255 eq 23



Explanation:

The extended access list ranges are 100 - 199 and 2000 - 2699, so the access-list number of 100 is valid. Telnet uses TCP, so the protocol TCP is valid. Now you just need to look for the source and destination address. only the third option has the correct sequence of parameters. Option B may work, but the question specifically states "only" to network 192.168.10.0, and the wildcard in option B is too broad.

Subject: CCNA
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Answer & Explanation Answer: A) Layer 1

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OSI layer 1 defines the standards for cabling and connectors.

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By default, all Windows 2000 trusts within a domain tree or forest are transitive trusts.

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What are the typical three different categories of VPNs?

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The following are the different types of VPNs :


PPTP ( Point to Point Tunnel protocol ) VPN : Most commonly used VPN. PPTP is a method for implementing virtual private networks. PPTP uses a control channel over TCP and a GRE tunnel operating to encapsulate PPP packets.


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L2TP ( Layer Two Tunneling Protoco) VPN : L2TP is an extension of the Point-to-Point Tunneling Protocol (PPTP) used by an Internet service provider (ISP) to enable the operation of a virtual private network over the Internet.


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What protocol would you use if you were running xDSL and needed authentication?

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Which of the following describes the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols?

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Which of the following is an industry-wide standards suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer3 Network layer of the OSI model?

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How should a router that is being used in a Frame Relay  network be configured to keep split horizon issues from preventing routing updates

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