Computer Networking
The Acme Corporation is implementing dial-up services to enable remote-office employees to connect to the local network. The company uses multiple routed protocols, needs authentication of users connecting to the network, and since some calls will be long distance, needs callback support. Which of the following protocols is the best choice for these remote services?

HDLC
PPP
PAP
802.1
Frame Relay

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Computer Networking
ARP (Address Resolution Protocol) is

a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address
a TCP/IP high level protocol for transferring files from one machine to another
None of these
a protocol that handles error and control messages
a protocol used to monitor computers

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Computer Networking
The fundamental requirements of private-to-public network interconnection methods which need to be provided in gateways is/are

universal accessibility for private network Data Terminal Equipment (DTE)
adequate cost control mechanisms for administration of the private networks
None of these
to assign address to private network DTEs
A and B both

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