Irex

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01 Which switching technology provides the lowest latency?
A Fast-forward (Fragment-free)
B Cut-through
C Store-and-forward
X I do not know

02 What is a unique identifier encoded into the network card?
A IP address
B ARP address
C MAC address
D Novell address
X I do not know

03 What would be the prefix mask of /27 in the dotted decimal format?
A 255.255.255.224
B 255.255.255.202
C 255.255.255.240
X I do not know

04 Which command can be used in Windows or Unix to display active network connections?
A netchck
B route print
C netstat
D activenet
X I do not know

05 A host wants to send a message to another host with the IP address 115.99.80.157. IP does not know the hardware address of the destination device. Which protocol can be used to discover the MAC address?
A ICMP
B ARP
C DHCP
D BOOTP
X I do not know

06 Which two of the following are routing protocols?
A OSPF
B IP
C IPX
D EIGRP
E Token Ring
X I do not know

07 What protocol in the transport layer does not guarantee packet delivery?
A TCP
B IP
C IPX
D UDP
X I do not know

08 Which protocol is used to manage and monitor the network?
A FTP
B SMTP
C SNMP
D IP
X I do not know

09 Which two of the following utilities use ICMP?
A nbtstat
B netstat
C traceroute
D ping
E telnet
X I do not know

10 You have subnetted the 192.168.1.0 network with a /26 mask. How many usable subnets and usable hosts per subnet this could provide?
A 1 network with 254 hosts
B 2 networks with 126 hosts
C 2 networks with 62 hosts
D 6 networks with 30 hosts
X I do not know

11 What is the common feature that both TCP and UDP have?
A Flow control using windowing
B Connection establishment and termination
C Multiplexing using port numbers
D Connectionless establishment and termination
X I do not know

12 Match the type of communication with the appropriate feature.
1 Packet sent to one host
2 Packet sent to a specific group
3 Packet sent to the all hosts in a subnet
X I do not know

13 You want to reduce collisions by creating separate collision domains and also wish to implement virtual LANs. Which of the following devices should you choose?
A Switch
B Router
C Active Hub
D Bridge
X I do not know

14 You setup two VLANs on a 2950 Catalyst switch. However, the hosts from one VLAN cannot ping hosts in the other one. Why?
A You have to configure VTP as well
B VLANs are obviously misconfigured.
C Routing is necessary for VLANs in order to communicate.
D You have to restart the switch to accept all the changes done.
X I do not know

15 What is spoofing?
A Making packets appear as if they come from a source address other than the real address
B Hiding device from unauthorized access
C Detecting when someone is attacking your network
D Detecting people using false or wrong authenticated logons
X I do not know

16 Which two network characteristics apply to VLANs? (Choose two.)
A All device in a VLAN are members of the same broadcast domain.
B The most common type of VLAN is protocol VLAN.
C VLAN membership is most commonly based on a switch port number.
D VLANs cannot be spread across multiple switches.
X I do not know

17 Which two functions can LAN switches and bridges provide? (Choose two.)
A packet routing
B jitter avoidance
C MAC address learning
D broadcast control
E loop avoidance using the Spanning Tree Protocol
X I do not know

18 What does a router do when a routing metric for network exceeds the maximum?
A The router considers the network unreachable.
B The routers tries to find another path to that network.
C The router sets the TTL value to something higher than current maximum.
D The router alerts the systém administrator to change the maximum value of the metric.
X I do not know

19 What is the purpose of routing table?
A to compare different paths to destination
B to tell the router which addresses arrive on which ports
C to tell the router which complete path to use to reach a destination
D to tell the router which port to use when forwarding packets
X I do not know

20 Which authetication protocols are used for user authentication on LAN switches? Choose two.
A TACACS
B ORACLE
C RADIUS
D SAP
X I do not know

21 What command would you use on a Cisco router to setup an encrypted password cisco?
A enable password cisco
B set secret cisco
C enable secret cisco
X I do not know

22 Are LANs and WANs packet-switched networks?
A LANs and WANs are packet-switched networks
B LANs are packet-switched. WANs are circuit-switched.
C LANs are packet-switched. WANs may or may not be packet-switched.
D LANs and WANs are both circuit switched
X I do not know

23 Choose a correct statement:
A Public IP addresses can be randomly generated, as long as they follow the IP addressing conventions
B IP addresses are unique to each host on the Internet and may not be shared
C IP Addresses can be dynamically assigned within a LAN, using DHCP
D Both B and C
X I do not know

24 Access-lists in a Cisco 2950 switch are added to which of the following?
A CAM table
B mac-address table
C TCAM table
D ARP table
E FIB
X I do not know

25 Which of the following are OSI session layer standards?
A OSPF; RIP
B NFS; SQL
C MPEG; JPEG
D ASCII; EBCDIC
X I do not know

26 Which bridge does the STP select as the root bridge?
(STP stands for Spanning Tree Protocol)
A the one with the lowest priority
B the one with the lowest bridge ID
C the one with the highest bridge ID
D the one with the highest MAC address
X I do not know

27 How does STP enforce a loop-free path in the network?
A By putting redundant links into the blocking state
B By shutting down redundant bridges
C By dropping all frames from redundant links
D By dropping frames from redundant bridges.
X I do not know

28 After an STP has converged in your network with only VLAN 1 defined, your colleague displays some info on one of the switches and states that this switch has no root ports. What would you say about such a statement?
A all the ports have to be in blocking state then
B spanning-tree vlan 1 root secondary macro had to be run on the switch before
C colleague is wrong, this can never happen
D none of the above
X I do not know

29 Which 3 connections allow the use of full-duplex Ethernet?
A Switch to host
B Switch to switch
C Hub to hub
D Switch to hub
E Host to host
X I do not know

30 Which of the following does show interface command output in a Cisco 2950 switch display? (Choose all that apply)
A Layer 1 connectivity status
B Layer 2 connectivity status
C port speed
D input errors
X I do not know