ccna interview questions and answers

801. What does a Standard IP Access-list use as test criteria?

A.) IP source address

B.) IP source and destination address, protocol numbers and port numbers

C.) IPX source and destination address

D.) Source MAC address

Ans A

802. What is the function of the Transport layer and which protocols reside there?

A.) MAC addressing - IP

B.) Interhost communication - SQL, NFS

C.) Best effort Packet delivery - TCP, UDP

D.) End-to-end connections - TCP, UDP

Ans D

803. Identify the 3 Internet layer IP protocols?

A.) NetBios

B.) IPX

C.) ARP

D.) IP

E.) RARP

Ans C D E

804. IPX routing updates occur how often?

A.) Every 30 seconds

B.) Every 60 seconds

C.) Only as needed

D.) When the remote router asks for an update

Ans B

805. Identify 3 methods not used to prevent routing loops?

A.) Holddown timers

B.) Sequence numbers

C.) Triggered updates

D.) Split horizon

E.) Area hierarchies

F.) Order of router startup

Ans B E F

806. Identify the hardware component that stores the bootstrap program?

A.) ROM

B.) NVRAM

C.) Booter load

D.) RAM

E.) Flash

Ans A

807. Which OSI layer provides mechanical, electrical & procedural specifications for activating, maintaining physical link?

A.) Presentation

B.) Network

C.) Application

D.) Physical

E.) Transport


F.) Data-Link

Ans D

808 Identify 2 characteristics of PPP?

A.) Uses LLC to establish the link

B.) Default serial encapsulation

C.) Support multiple layer 3 protocols

D.) Offers two types of authentication; PAP and CHAP

Ans C D

809. Identify 3 characteristics of a connection oriented protocol?

A.) Path determination

B.) Flow control

C.) Acknowledgements

D.) Uses hop count as metric

E.) 3 way handshake

Ans B D E

810 What is the maximum hop count for IP RIP?


A.) Infinity

B.) 16

C.) 15

D.) 1

Ans C

811 What is Cisco's default encapsulation method on serial interfaces?

A.) ANSI

B.) Cisco

C.) Q933a

D.) HDLC

Ans D

812. Which of the following is a characteristic of a switch, but not of a router?

A.) Switches forward packets based on the IPX or IP address in the frame

B.) Switches forward packets based on the IP address in the frame

C.) Switches forward packets based on the MAC address in the frame

D.) Switches forward packets based only on the IP address in the packet

Ans C

813. Ping uses which Internet layer protocol?

A.) RARP

B.) ICMP

C.) ARP

D.) FTP

Ans B

814. Which is true regarding store-and-forward switching method?

A.) Latency varies depending on frame-length

B.) Latency is constant

C.) It is default for all Cisco switches

D.) It only reads the destination hardware address before forwarding the frame

Ans A

815. Which three of the following are true statements about connection-oriented sessions?

A.) The segments delivered are acknowledged back to the sender upon their reception


B.) Any segments not acknowledged are retransmitted by the receiver

C.) A manageable data flow is maintained in order to avoid congestion, overloading and loss of any data

D.) Segments are sequenced back into their proper order upon arrival at their destination

Ans A C D

816 What does a metric of 16 hops represent when using RIP?

A.) Number of hops to the destination

B.) Destination unreachable

C.) Number of routers

D.) Bandwidth

Ans B

817. You need to come up with a TCP/IP addressing scheme for your company. Which two factors must you consider when you define the subnet mask for the network?

A.) The location of DHCP servers

B.) The volume of traffic on each subnet

C.) The number of subnets on the network

D.) The location of the default gateway

E.) The number of host IDs on each subnet

Ans C E

818. What is the difference between TCP and UDP?

A.) TCP is connection-oriented; UDP uses acknowledgements only

B.) TCP is connection-oriented; UDP is connectionless

C.) Both TCP and UDP are connection-oriented, but only TCP uses windowing

D.) TCP and UDP both have sequencing, but UDP is connectionless

Ans B D

819. What does the 'S' mean when looking at the routing table?

A.) Statically connected

B.) Directly connected

C.) Dynamically attached

D.) Shutdown route

Ans A

820. Why would you use static routing instead of dynamic routing?

A.) When you want automatic updates of the routing tables

B.) All the time

C.) When you have very few routes and want to conserve bandwidth

D.) When you have a gateway of last resort

Ans C

821. What does the acronym ARP stand for?

A.) Address Resolution Phase

B.) ARP Resolution Protocol

C.) Address Resolution Protocol

D.) Address Recall Protocol

Ans C

822. What is the default encapsulation of Netware 3.12?

A.) Ethernet_II

B.) 802.5

C.) 802.2

D.) 802.3

Ans C

823. Regarding frame relay, which of the following statements are true?

A.) You must use ANSI encapsulation if connecting to non-Cisco equipment

B.) You must use IETF encapsulation if connecing to non-Cisco equipment

C.) You must use Q.933a encapsulation if connecing to non-Cisco equipment

D.) You must use Cisco encapsulation if connecting to non-Cisco equipment

Ans B

824 What is required to support full-duplex Ethernet?

A.) Multiple paths between multiple stations on a link

B.) Automatic sensing operation by all connected stations

C.) Loopback and collision detection disabled

D.) Full-duplex NIC cards

Ans C D

825. Which layer is responsible for determining if sufficient resources for the intended communication exists?

A.) Application

B.) Network

C.) Session

D.) Presentation

E.) Transport

Ans A

826. What are the 2 functions of the Data Link Mac layer?

A.) Handles access to shared media

B.) Manages protocol access to the physical network medium

C.) Provides SAPs for higher level protocols

D.) Allows multiple devices to uniquely identify one another on the data link layer

Ans A B D

827. Describe End to End network services: (Choose all that apply)

A.) Best Route selection

B.) Accomplished Segment by Segment, each segment is autonomous

C.) Flow Control & Data Integrity

D.) Best efforts packet delivery

Ans B C

828. Which of the following provide correct information about a protocol at the transport layer of the OSI model?

A.) UDP - Provides Connectionless datagrams service

B.) TCP - Provides Connection Oriented Services

C.) SMTP - Provides Mail Exchange

D.) IP - Route determination

E.) TCP - Provides Flow Control and Error Checking

F.) FTP - Transfers of Files

Ans A E

829. Which protocol works at the Internet layer and is responsible for making routing decisions?

A.) UDP

B.) IP

C.) TCP

D.) ARP

Ans B

830. Which layer is responsible for providing mechanisms for multiplexing upper-layer application, session establishment, and tear down of virtual circuits?

A.) Session

B.) Network

C.) Physical

D.) Transport

E.) Application

F.) Presentation

Ans D

831. Which of the following are logged when IP access list logging is enabled?

A.) source address

B.) protocol

C.) source port

D.) destination address

E.) access list number

F.) destination port

Ans A B C D F

832. What's the default CDP holdtime in seconds for Cisco routers?

A.) 30 seconds

B.) 180 seconds

C.) 90 seconds

D.) 60 seconds

Ans B

833. Which two of the following protocols are used at the Transport layer?

A.) ARP

B.) UDP

C.) ICMP

D.) RARP

E.) TCP

F.) BootP

Ans B E

834. LAN stands for which of the following?

A.) Local Area Network

B.) Local Arena Network

C.) Local Area News

D.) Logical Area Network

Ans A

835. Choose three reasons why the networking industry uses a layered model:

A.) It facilitates systematic troubleshooting

B.) It allows changes in one layer to occur without changing other layers

C.) It allows changes to occur in all layers when changing one protocol

D.) It clarifies how to do it rather than what general function to be done

E.) It clarifies what general function is to be done rather than how to do it

Ans A B D

836 A ISDN PRI circuit can be described as which of the following?

A.) 24 B channels and 1-64Kbps D channel

B.) 23 B channels and 1-64Kbps D channel

C.) 2-D channels and 1-C channel

D.) 2-64Kbps B channels and 1-16Kbps D channel

Ans B

837. What are 3 ways to provide login access to router?

A.) Console

B.) TFTP

C.) Rlogin


D.) Auxiliary Port

E.) X Windows

F.) Telnet


Ans A D F

838 Which of the following statements are true?

A.) Store and forward switching creates variable latency through the switch

B.) Cut through switching creates variables latency through the switch

C.) Cut through switching works at wire speed

D.) Store and forward switching works at wire speed

Ans A C

839 Which of the following can reply to a Novell Get Nearest Server (GNS) request?

A.) Local Novell server

B.) Remote Novell Printer

C.) Cisco router

D.) Novell client

Ans A C

840. Identify the 3 kinds of routes IGRP advertises?

A.) Interior

B.) Dynamic

C.) System

D.) Exterior

Ans A C D

841. What is the routing metric used by RIP?

A.) Route poisoning

B.) Split horizon

C.) Hop Count

D.) TTL

Ans C

842. What is the default encapsulation and frame type on an Ethernet interface when enabling Novell?

A.) SNAP

B.) Ethernet_II

C.) 802.2

D.) 802.3

E.) SAP

F.) Novell-ether

Ans D F

843. What is true when creating static route?

A.) The mask parameter is optional

B.) The administrative distance is required

C.) The gateway parameter is required

D.) The administrative distance is optional

Ans C D

844 Of the following switching types, which one has the highest latency?

A.) Cut-through

B.) None

C.) Store-and-forward

D.) Fragment Free

Ans C

845. What does the IPX maximum-path command do?

A.) Allows you to disable the TTL on an IPX packet

B.) This parameter is only used in NLSP routing

C.) Sets the maximum metric that can appear in the routing table

D.) Configures round robin load sharing over multiple equal metric paths (parallel paths)

Ans D

846. What does -1 mean in an extended IPX access-list?

A.) Any IP address

B.) Deny all

C.) Deny host

D.) Any host or any network

Ans D

847 What parameter is used with statically assigned routers to tell packets which interface to use to reach a distant network?

A.) Mask

B.) Subnet

C.) Default gateway

D.) Interface

Ans C

848. Which of the following protocols are used to get an IP address from a known MAC address?

A.) BootP

B.) TCP

C.) IP

D.) ARP

E.) RARP

F.) ICMP

Ans A E

849. What does the Spanning Tree Algorithm (STA) do?

A.) Restore lost frames

B.) Builds routing tables for routing through an internetwork

C.) Forward packets through a switch

D.) STA is implemented by STP to prevent loops

Ans D

850. IP extended access lists use which of the following as a basis for permitting or denying packets?

A.) destination address

B.) all of the above

C.) protocol

D.) source address

E.) port

Ans B