TCP/IP Basics Practice Quiz
Which of the following is indicative of an FTP bounce?
Arbitrary IP address
Which of the following is indicative of an FTP bounce? File Transfer Success Same Port Number Arbitrary IP address Reverse DNS lookups
Arbitrary IP address
Which of the following is used to assign an IP address to a device?
DHCP
Translates the domain name into its associated IP address so that data and info can be routed to the correct computer. FTP server DNS server hosts server UDP server
DNS server
A network engineer is troubleshooting an issue with a computer that is unable to connect to the Internet. The network engineer analyzes the following output from a command line utility: Network Destination Netmask Gateway Interface 192.168.1.0 255.255.255.0 192.168.1.254 eth0 192.168.1.10 255.255.255.255 192.168.1.10 eth0 127.0.0.1 255.0.0.0 On-Link lo 127.0.0.0 255.0.0.0 On-Link lo 255.255.255.255 255.255.255.255 102.168.1.10 eth0 Which of the following is the reason for the computer issue, given the above output?
Default gateway on the wrong interface Missing default gateway Wrong default gateway netmask
A contractor was hired to troubleshoot congestion issues on the network. After a few of the switches have been reconfigured/upgraded by the contractor, congestion worsens and collisions increase. Which of the following is the BEST action to alleviate the situation?
Downgrade firmware and restore backup configuration
Are these hosts on the same network Source: 88.80.80.215/9 Destination: 88.128.255.254/9
FALSE
Connections on a router, to the Internet and other routers for example, are called applications. True False
FALSE
Is this IP address configuration valid for an internet host? IP: 10.1.2.3 Subnet: 255.255.240.0
FALSE
TCP is the network layer protocol used on the Internet today.
FALSE
The latest version of IP is IPv7, which increases the address space from 128 bits to 256 bits. True False
FALSE
The network layer address for IP is ten bytes long when using IPv4.
FALSE
The network layer sits directly between the application layer and the data link layer in the Internet five-layer network model.
FALSE
The source port identifier in the TCP header tells the TCP software on the destination computer, which application on the destination it should pass the packet to.
FALSE
A company has a server with redundant power supplies. Which of the following is this an example of?
Fault tolerance
UDP is not commonly used for: a. network management control messages b. RIP messages c. DHCP addressing messages d. HTTP requests e. routing control messages
HTTP requests
Which protocol does the ping utility use?
ICMP
Which of the following reside at a minimum of Layer 3 of the OSI model? (Select TWO).
IP address Router
What does IANA stand for?
Internet Assigned Numbers Authority
While working on a PC, a technician notices 0.0.0.0 in the routing table. Which of the following does this indicate? It is the default route. The PC has not been assigned an IP address. The firewall is down. This is the address for the DHCP server.
It is the default route
A computer configured by DHCP has a listed DNS server and gateway. Which of the following allows these settings to be configured?
Leases Reservations Options
A(n) _________ is a specially formatted request used to perform IP address to data link address resolution.
Link state request Address Resolution Protocol request Domain Service Request Autonomous System Request
An application layer address using TCP/IPv4 looks like: www.uvu.edu 128.192.78.5 00-0F-00-81-14-00 [email protected] Building 4, Room 2, User 3
NOT 00-0F
Which of the following is an example of an IPv4 address? ::1 192:168:1:55 00:AB:FA:B1:07:34 192.168.1.254
NOT 00:AB:FA:B1:07:34
What is the number 138 in binary? 10000111 10101010 11001010 10001010
NOT 11001010
The _____ address range is reserved for a computer to communicate with itself and is called the loopback. 127 111 254 121 239
NOT 111
The older version of IP has a ________ header of control information. 120-bit 128-bit 1024-bit 320-bit 192-bit
NOT 128-bit NOT 320-bit
IPv4 provides ___________ IP addresses. c. 64 billion a. 4.3 billion b. 144 million e. 1 million d. 3.14 billion
NOT 64 billion
ICANN: assigns data link layer addresses refers to Interchange Computer Addressing Networks and Nodes developed X.25 network layer protocol developed the IPX/SPX network layer protocol approves which network layer addresses (usually, approved or assigned in groups or classes) can be used by an organization for its computers that will connect to the Internet
NOT DEVELOPED IPX/SPX
___________ is the translation of application layer addresses into IP addresses. Name service coding Network interface card reversal Server name resolution Subnet masking IPv6
NOT Network
______________ communication is most commonly used when the application data or message can fit into one single packet. Connection-oriented Byte-oriented Connectionless Physical-oriented Frame-oriented
NOT byte-oriented NOT frame-oriented
A(n) ________ refers to a group of computers that are logically grouped together by IP number. subnet TCP group data link group IPv6 group application net
NOT data link group
Routers operate at which layer of the IP model.
Network
A network technician is troubleshooting a network connection error when pinging the default gateway no reply is received. The default gateway is found to be functioning properly but cannot connect to any workstations. At which of the following OSI layers could the problem exist? (Select TWO)
Physical Application Data link Presentation Session
A company needs to find a way to best route latency-sensitive traffic appropriately on an already congested network. Which of the following would be BEST suited for this purpose?
QoS
When TCP/IP translates an application layer address into an IP address, it sends a special __________ to the nearest DNS server.
SNA packet X.25 packet DNS request packet IPX message
Which of the following is true about tunneling and encryption?
SSL VPN provides a secure tunnel. RAS is a secure way to create a tunnel. SIP encrypts all data going through the tunnel.
A company has just implemented VoIP. Prior to the implementation, all of the switches were upgraded to layer 3 capable in order to more adequately route packages. This is an example of which of the following network segmentation techniques?
Separate public/private newtorking Honeypot implementation Performance optimization
A host has been assigned the address 169.254.0.1. This is an example of which of the following address types?
Static APIPA MAC
A host may have more than one IP address. True False
TRUE
An example of an application layer address is www.indiana.edu.
TRUE
Are these hosts on the same network Source: 136.130.242.194 Destination: 136.130.242.222 Subnet Mask: 255.255.255.224
TRUE
Are these hosts on the same network Source: 183.197.56.20/26 Destination: 183.197.56.62/26 True False
TRUE
Are these hosts on the same network Source: 30.239.24.15 Destination: 30.239.30.255 Subnet Mask: 255.255.248.0 True False
TRUE
TCP includes a sequence number so that the packets can be reassembled at the destination in the correct order.
TRUE
The transport layer process running on the destination computer, reassembles the fragmented application message before passing it up to the application layer
TRUE
Translating an application layer address to a network layer address and finally to a data link layer address is called address resolution.
TRUE
Which of the following is true about an IP address if the first bit is a one and the second bit is a zero?
The address is a Class B address.
Which of the following is the reason why a company's network may contain a DHCP server?
To allow secure remote access To assign IP addresses to devices on the network To convert IP addresses to fully qualified domain names
A network administrator is using a packet analyzer to determine an issue on the local LAN. Two separate computers are showing an error message on the screen and are unable to communicate with other computers in the same lab. The network administrator looks at the following output: SRC MAC SRC IP DST MAC DST IP00:1D:1F:AB:10:7D 192.168.1.10:2000 15:BE:9F:AB:10:1D 192.168.1.14:120005:DD:1F:AB:10:27 192.168.1.10:1000 22:C7:2F:AB:10:A2 192.168.1.15:1300Given that all the computers in the lab are directly connected to the same switch, and are not using any virtualization technology, at which of the following layers of the OSI model is the problem occurring?
Transport Network Application
IP addresses from 224 to 239 belong to Class D and are reserved for
multicasting
If all of the bits that represent the host portion of the IP address are set to 0, the address is a/the _______ address.
org TCP network
Quality of Service routing is a special type of routing in which different connections are assigned different priorities.
true
Source port address is the logical address used to identify the application that is sending the data.
true
The TCP portion of TCP/IP performs linking to the application layer.
true
The data link layer address is generally encoded in a network card by the card's manufacturer.
true
Which of the following network devices builds a table of ports to MAC addresses to forward packets only to necessary ports?
--Switch Router Hub
What are two ways to represent a network mask that would allow 45 hosts? (Select 2)
/25 /27 255.255.255.224 /26 >>255.255.255.192
What is the number 138 in binary?
10001010
Select the IP address that is in the reserved private address space.
11.44.55.66 10.50.68.220 192.167.15.68
Which of the following is the common port used for IMAP?
143
Enter the last valid host on the network that the host 192.168.158.169 255.255.255.252 is a part of:
192.168.158.170
A subnet mask of ___________ means that all computers with only the same first two bytes in their IPv4 addresses are on the same subnet. 255.255.0.0 255.255.255.0 11111111.0.0.0 255.255.255.255 255.0.0.0
255.255.0.0
Your ISP sent you the following information. Default Gateway 130.75.69.32/21 What is the proper subnet mask for this IP address(in dotted decimal format)?
255.255.248.0
Which of the following subnet masks would allow for 192.168.0.3 and 192.168.0.240 to be in the same subnet?
255.255.255.0
UVU needs a new Campus Area Network. Classrooms may have different numbers of host computers. The largest classroom will have no more than 60 host computers. What subnet mask accomplishes the goal and maximizes the number of subnets that may be created?
255.255.255.192
How many bits does an IPv4 address consist of?
32
A company would like all HTTP traffic to filter through a proxy server on port 8080. Which of the following port numbers needs to be redirected through the proxy server to accomplish this?
443 143 80
A class B network can have ____ hosts. 254 65534 65536 255
65534
A desktop computer is connected to the network and receives an APIPA address but is unable to reach the VLAN gateway of 10.10.100.254. Other PCs in the VLAN subnet are able to reach the Internet. Which of the following is MOST likely the source of the problem? Bad SFP in the PC's 10/100 NIC OS updates have not been installed 802.1q is not configured on the switch port APIPA has been misconfigured on the VLAN
802.1q is not configured on the switch port
What is the maximum number of hosts in a /19 subnet?
8190 254 16,382
A destination port number at the transport layer identifies which application on a computer should receive the data transmission.
A destination port number at the transport layer identifies which application on a computer should receive the data transmission.
A network administrator is connecting hosts A and B directly through their Ethernet interfaces, as shown in the illustration. Ping attempts between the hosts are unsuccessful. What can be done to provide connectivity between the hosts? (Select 2 answers)
Add a switch between the hosts >>change the first machine's ip address to 192.168.1.194 Set subnet masks to 255.255.255.0 change second machine's ip address to 192.168.1.37 Use ip route command to add a static route
What does ARP stand for?
Address Resolution Protocol
A computer on VLAN 10 with the IP address of 192.168.1.45/27 cannot ping a computer on VLAN 20 with the IP address of 192.168.1.65/27. Which configuration change will allow the PING to be successful? AllowICMP to pass through the Router Replace the router with a Layer 2 switch that supports VLANs Change VLAN 20 computers Default Gateway to 192.168.1.127/27 Change VLAN 10 computers Default Gateway to 192.168.1.32/27
AllowICMP to pass through the Router
A customer is attempting to download a file from a remote FTP server, but receives an error that a connection cannot be opened. Which of the following should be one FIRST to resolve the problem?
Validate the security certificate from the host Ensure that port 20 is open Flush the DNS cache on the local workstation Ensure that port 161 is open
A administrator's network has OSPF for the internal routing protocol and has two interfaces that continue to flap. The administrator reviews the following output: Fast ethernet 0 is up, line protocol is up Int ip address is 10.20.130.5/25 MTU 1500 bytes, BW10000 kbit, DLY 100 usec Reliability 255/255, Tx load 1/255, Rx load 1/255 Encapsulation ospf, loopback not set Keep alive 10 Full duplex, 100Mb/s, 100Base Tx/Fx Received 1052993 broadcasts 1258 input errors 983881 packet output, 768588 bytes 1747 output errors, 0 collisions, 423 resets Which of the following problems would cause the interface flap?
duplex mismatch
Are these hosts on the same network Source: 175.142.146.150 Destination: 175.142.127.0 Subnet Mask: 255.255.192.0
false
Are these hosts on the same network Source: 197.209.70.27 Destination: 197.209.70.128 Subnet Mask: 255.255.255.128
false
Are these hosts on the same network Source: 61.184.114.150 Destination: 61.175.114.150 Subnet Mask: 255.240.0.0
false
Are these hosts on the same network Source: 90.47.38.82/15 Destination: 90.48.38.82/15
false
Connections on a router, to the Internet and other routers for example, are called applications.
false
IP is responsible for error-free delivery of packets on a TCP/IP network.
false
In the IP model the Internetwork Layer is responsible for error free communications.
false
Is this IP address configuration valid for an internet host? IP: 100.134.257.3 Subnet: 255.255.240.0
false
Same subnet? Source Destination SubnetMask 220.15.90.62 220.15.90.65 255.255.255.192
false
The latest version of IP is IPv7, which increases the address space from 128 bits to 256 bits.
false
The transport layer routes messages through the network selecting the best path from the source to the destination station.
false
The newer form of IP, version 6 (IPv6):
has an increased address size from 32 bits to 128 bits
Assume that more than one application program is using the same communications line on a particular computer. To be able to decide to which application program a message should be delivered on this computer, TCP/IP relies on the:
port address
A special type of message that is used when sending the same message to all computers on a specific LAN or subnet is called a:
radiated message guided message multicast message broadcast message
TCP uses _____________ so that the destination station can reassemble the packets into the correct order.
sequence numbers
The ____________ layer links the application layer with the network layer is responsible for end-to-end delivery of messages.
session presentation transport physical
Are these hosts on the same network Source: 30.239.24.15 Destination: 30.239.30.255 Subnet Mask: 255.255.248.0
true
Are these hosts on the same network Source: 41.52.156.225 Destination: 41.53.255.254 Subnet Mask: 255.254.0.0
true
Because there is a limit on the length of a frame that the data link layer can transmit from node to node, the transport layer breaks up the message from the application layer into several smaller segments.
true
Is the source and destination host on the same network? Source Destination SubnetMask 150.222.255.1 150.222.25.1 255.255.0.0
true
Part of the function of address resolution is translating the application layer address of the destination into a network layer address.
true
