Ask the Experts
Ask the Experts
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Who created the OSI model?
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Overhead on a T1 carrier
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Teleconferencing and videoconferencing
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What's MD5 hash?
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Performance metrics for network admin
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Is Kerberos prone to Brute Force attack?
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What are the advantages and disadvantages of IP telephony
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Pros and cons of teleconferencing
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Difference between hub and switch
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What is a sub interface, PVC and loopback?
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Protocols in the OSI model
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Network layers explained
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Best topology for LAN
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Video conference through satellite
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Basic networking definitions
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What is the difference between a router and a gateway?
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What is PPPoA and PPPoE?
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Bigger than a bit but smaller than a byte
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Conflict between LAN and WAN on home network
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Difference between TCP/IP and OSI
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What is a live machine?
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Ping - next hop
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Logical and physical network designs
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Difference between how a router and a bridge function
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Route the communication flow
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Packets and frames
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VPN connecting cuts off Internet
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Configure modem and RAS
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Static and dynamic routing
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VPN over ATM
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Features and benefits of the VLAN
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Technologies used in teleconferencing and videoconferencing
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How is router 'capacity' conventionally defined?
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Difference between a payment switch and a router
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Formula for determining the bandwidth attenuation through walls
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CCNA and future prospects in networking
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What is the basic concept of IP VPN?
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Character oriented protocols and bit-oriented protocols
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Use the AUX port to configure switches
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Monitoring traffic by port number with MRTG
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Switch terminology
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Gateways vs. routers/bridges?
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Ethernet packet collision over fiber optic?
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CCNA expiration date?
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Explaining concurrent tunnels
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Multiplexing in OSI model?
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ATM vs. leased line?
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LAN design process?
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Layer 2 switch saturation?
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Voice over frame relay vs VoIP?
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Protocols vs. network layers?
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Firewall security risks
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Blocking certain MAC addresses
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Phone numbers and IP addresses
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Which came first: TCP/IP or OSI?
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Can two VPN clients coexist?
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Advantages of 1800MHz GSM
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Disabling open ports a good idea?
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Workgroup vs. domain
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Using H.323 with NAT
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Setting up an Internet cafe
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MCSE vs. CCNP
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Advantages of DHCP and NAT
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Why is ARP necessary?
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NetBIOS name resolution problems
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Mobile computing vs. wireless
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Max distance for multimode fiber
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Fiber vs. T1/T3 connections
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Cisco switch code questions
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The VoDSL and VoIP difference
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The purpose of honeypots
Honeypots are primarily deployed to distract would-be attackers from the real servers. Using a honeypot may give you the opportunity to detect and respond to an attack (on the bogus system) before the attackers are able to do any real harm. Continue Reading
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Blocking NT NetBios name queries
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How many is too many collisions?
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Protecting the LAN from lightning strikes
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The V35 interface and its alternatives
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IP source routing and security issues