Monday, December 31, 2018

Top 100+ CCNA interview questions

يمكنك إيجاد اجابة أي سؤال عن طريق جوجل.
  • What is a ‘Router’?
  • What is a network Switch?
  • What is a ‘protocol’ in networking?
  • Differentiate between a switch and a hub?
  • How many layers are there in an OSI reference model? Name them.
  • What is the difference between a ‘broadcast domain’ and a ‘collision domain’?
  • What is the size of an IP address?
  • What is a DLCI?
  • Name the different types of networks?
  • What is the difference between a ‘half-duplex’ and a ‘full-duplex’ system?
  • What does the show protocol display?
  • What is PoE (Power over Ethernet)?
  • What is the use of ‘ping’ command?
  • What is ‘round-trip time’?
  • What is the difference between public and private IP?
  • What is latency?
  • At which layer of OSI does frame relay technology work?
  • What is the size of a Cisco ping packet?
  • What is the difference between static and dynamic IP addressing?
  • What does MTU stand for? What is the default size?
  • Does a bridge divide a network into smaller sections?
  • When does network congestion occur?
  • What is the role of the LLC sublayer?
  • What are the different memories used in a CISCO router?
  • Differentiate full-duplex from half-duplex.
  • What is MTU?
  • What command do we give if router IOS is stuck?
  • Mention what does the clock rate do?
  • Mention what is the metric of EIGRP protocol?
  • What is BootP?
  • What is the difference between TCP and UDP?
  • In how many ways you can access the router?
  • What is the difference between EIGRP and OSPF?
  • Mention the ranges for the private IPs?
  • What is DHCP?
  • What is the size of the IP address?
  • What is the difference between the switch and the Hub?
  • What is route poisoning?
  • What is Bandwidth?
  • What is HDLC?
  • What is the difference between Default VLAN and Native VLAN?
  • What is the difference between PAGP and LACP?
  • What is the difference between LAN and WAN?
  • What is ‘subnet’? Why is it used?
  • What are the benefits of VLAN?
  • Which device filters and forwards data packet based on layer 3 IP address?
  • What is ARP?
  • What is the difference between VLAN and Subnet?
  • What is the difference between the Modem and the Router?
  • How many links we need to make a network fully meshed which has 10 devices?
  • How does cut-through LAN switching work?
  • Differentiate User Mode from Privileged Mode?
  • What is the range of class C address?
  • Which router command is used to enable IPv6?
  • What is PoE (Power over Ethernet)?
  • What is the difference between the broadcast domain and collision domain?
  • What is the difference between Straight through and Crossover cable?
  • What is Round Trip Time?
  • Difference between CSMA/CD and CSMA/CA?
  • What is the IEEE standard for wireless networking?
  • What is AS (Autonomous System)?
  • Differentiate User Mode from Privileged Mode?
  • What are the major types of Networks and explain?
  • What is VTP?
  • What are the VTP modes?
  • What is the difference between Unicast, Multicast, Broadcast, and Anycast?
  • Can IP address be assigned to Layer 2?
  • Which are most common LAN topologies?
  • What is the default size of Frame?
  • What is the concept of private VLAN?
  • What is the MAC address?
  • What is the difference between Router and Layer 3 Switch?
  • Which layer called error detection layer?
  • What is the function of “Passive Interface” in OSPF?
  • What are the different types of passwords that you can use in Cisco routers?
  • What is meant ARP and RARP?
  • What are the different types of cables that are used in routing?
  • What is the difference between ‘bitrate’ and ‘baud rate’?
  • Define CDP and its functions?
  • What is the subnet mask of 192.168.10.1/29?
  • What is the distance vector? Explain with example.
  • How many broadcast domains are in a layer 2 Switch?
  • What is the administrative distance of RIP, EIGRP and OSPF?
  • What happens if there is no VLAN in switch ports?
  • What are the two ports of switches?
  • Define STP. Why is it used?
  • What are the multicast addresses used in IPv4 and IPv6 by different protocols?
  • What is HDLC?
  • What are 2 main types of ACLs?
  • What is BIA?
  • Which router command is used to display RAM contents?
  • Which router command is used to display NVRAM (Non-volatile random-access memory) contents?
  • Which IP addresses can be given as private addresses?
  • What is Syslog?
  • What is the difference between private IP and public IP?
  • What is NTP?
  • What is SNMP?
  • On what algorithm does OSPF work?
  • What are the modes of LACP?
  • What are the modes of PAGP?
  • What is the use of “Service password Encryption”?
  • To obtain an IP address from the DHCP server, which message a client system uses when it boots up?
  • Which device filters and forwards data frame based on layer 2 MAC address?
  • What is FCS?
  • What is Size of MAC Address?
  • HOW will one determine which device mac address is on what port of Cisco Switch?
  • What is CAM?
  • What is loopback IP in IPV6?
  • Which layer of the OSI model I responsible for reliable connections?
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