CTS 1650 - Final Exam Pack
Host-A has the IPv4 address and subnet mask 10.5.4.100 255.255.255.0. What is the network address of Host-A - 10.0.0.0 - 10.5.0.0 - 10.5.4.0 - 10.5.4.100
- 10.5.4.0
Host-A has the IPv4 address and subnet mask 10.5.4.100 255.255.255.0. What is the network address of Host-A? (Choose all that apply) - 10.5.4.1 - 10.5.0.1 - 10.5.4.99 - 10.0.0.98 - 10.5.100.4
- 10.5.4.1 - 10.5.4.99
Host-A has the IPv4 address and subnet mask 172.16.4.100 255.255.0.0. What is the network address of Host-A? - 172.0.0.0 - 172.16.0.0 - 172.16.4.0 - 172.16.4.100
- 172.16.0.0
Host-A has the IPv4 address and subnet mask 172.16.4.100 255.255.0.0. Which of the following IPv4 addresses would be on the same network as Host-A? (Choose all that apply) - 172.16.4.99 - 172.16.0.1 - 172.17.4.99 - 172.17.4.1 - 172.18.4.1
- 172.16.4.99 - 172.16.0.1
Host-A has the IPv4 address and subnet mask 192.168.1.50 255.255.255.0. Which of the following IPv4 addresses would be on the same network as Host-A? (Choose all that apply) - 192.168.0.1 - 192.168.0.100 - 192.168.1.1 - 192.168.1.100 - 192.168.2.1
- 192.168.1.1 - 192.168.1.100
What are three parts of an IPv6 global unicast address? (Choose 3) - A subnet id that is used to identify networks inside of the local enterprise site - A global routing prefix that is used to identify the network portion of the address that has been provided by an ISP - A global routing prefix that is used to identify the portion of the network address provided by a local administrator - An interface ID that is used to identify the local network for a particular host - An interface ID that is used to identify the local host on the network.
- A subnet id that is used to identify networks inside of the local enterprise site - A global routing prefix that is used to identify the network portion of the address that has been provided by an ISP - An interface ID that is used to identify the local host on the network.
Which three are transport layer responsibility? (Choose three) - Conversation multiplexing - Identifying frames - Identifying routing information - Segmenting data and reassembling segments - Tracking individual conversations
- Conversation multiplexing - Segmenting data and reassembling segments - Tracking individual conversations
Which two types of ICMP messages are common to both ICMPv4 and ICMPv6 (Choose two) - Destination or Service Unreachable - Hostname resolution - IP configuration - Source Unreachable - Time exceeded
- Destination or Service Unreachable - Time Exceeded
Which two fields are the same in a TCP and UDP header? (Choose two) - Control bits - Destination port number - Sequence number - Source port number - Well-known port number
- Destination port number - Source port number
Which two applications would use the TCP transport layer protocol? (Choose 2) - FTP - HTTP - ICMP - TFTP - VoIP
- FTP - HTTP
Which two statements are correct about private IPv4 addresses? (Choose 2) - Private IPv4 addresses are assigned to devices. - Internet routers will typically forward any packet with a destination address that is a private IPv4 address. - 172.99.1.1 is a private IPv4 address. - Any organization (home, school, office, company) can use the 10.0.0.0/8 address.
- Private IPv4 addresses are assigned to devices. - Any organization (home, school, office, company) can use the 10.0.0.0/8 address.
Which organization or group of organizations receives IP addresses from IANA and is responsible for allocating these addresses to ISPs and some organizations. - IETF - IEEE - RIRs - Tier 1 ISPs
- RIRs
Which two situations are the result of excessive broadcast traffic? (Choose 2) - Slow network operations. - Slow device operations. - When devices on all adjacent networks are affected. - When the router has to forward an excessive number of packets.
- Slow network operations. - Slow device operations.
Which two things can be determined by using the ping command? (Choose two) - The average time it takes a packet to reach the destination and for the response to return to the source - The IP address of the router nearest the destination device - The destination device is reachable through the network - The number of routers between the source and the destination device
- The average time it takes a packet to reach the destination and for the response to return to the source - The destination device is reachable through the network
Which two statements are correct about public IPv4 addresses? (Choose 2) - Public IPv4 addresses are allowed to be assigned to devices within an organization's intranet. - To access a device over the internet, the destination IPv4 address must be a public address. - 192.168.1.10 is a public IPv4 address. - Public IPv4 address exhaustion is a reason why there are private IPv4 addresses and why organizations are transitioning to IPv6
- To access a device over the internet, the destination IPv4 address must be a public address. - Public IPv4 address exhaustion is a reason why there are private IPv4 addresses and why organizations are transitioning to IPv6
What is the minimum configuration for router interface that is enabled for IPv6? - To have a self-generated loopback address - To have both an IPv4 and an IPv6 address - To have both a link-local and a global unicast IPv6 address - To have a link-local
- To have a link-local IPv6 address
A network administrator is testing network connectivity by issuing the ping command on a router. Which symbol will be displayed to indicate that a time expired during the wait for an ICMP echo rely message? - ! - U - . - $
.
What is the prefix length notation for the subnet mask 255.255.255.224? - /26 - /28 - /27 - /25
/27
What is the complete range of TCP and UDP well-known ports? - 0 to 255 - 256 to 1023 - 1024 - 49151 - 0 to 1023
0 to 1023
Assume a host with IP address 10.1.1.10 wants to request web services from a server at 10.1.1.254. Which of the following would display the correct socket pair? - 1099: 10.1.1.10, 80:10.1.1.254 - 10.1.1.1:80, 10.1.1.254:1099 - 10.1.1.10:1099, 10.1.1.254:80 - 80:10.1.1.10, 1099:10.1.1.254
10.1.1.10:1099. 10.1.1.254:80
Given a /48 Global Routing Prefix and a /64 prefix, what is the subnet portion of the following address: 2001:db8:cafe:1111:2222:3333:4444:5555 - cafe - 1111 - 2222 - 3333 - 4444
1111
If a network device has a mask of /28, how many IP addresses are available for hosts on this network? - 16 - 254 - 32 - 62 - 14 - 256
14
Your organization is issued the IPv6 prefix of 2001:db8:130f::/48 by your service provider. With this prefix, how many bits are available for your organization to create /64 subnetworks if interface ID bits are not borrowed? - 8 - 128 - 80 - 16
16
What is the valid most compressed format possible of the IPv6 address 2001:0DB8:0000:AB00:0000:0000:0000:1234 - 2001:DB8:AB00::1234 - 2001:DB8:0:AB:0:1234 - 2001:DB8:0:AB::1234 - 2001:DB8:0:AB00::1234
2001:DB8:0:AB00::1234
What is the network address for the IPv6 address 2001:DB8:AA04:B5::1/64 - 2001:DB8::/64 - 2001::/64 - 2001:DB8:AA04::/64 - 2001:DB8:AA04:B5::/64
2001:DB8:AA04:B5::/64
What is the prefix associated with the IPv6 address 2001:DB8:D15:EA:CC44::1/64 - 2001:DB8:D15:EA::/64 - 2001::/64 - 2001:DB8:D15:EA:CC44::/64 - 2001:DB8::/64
2001:DB8:D15:EA::/64
What is the most compressed representation of the IPv6 address 2001:0db8:0000:abcd:0000:0000:0000:0001? - 2001:0db8:abcd::! - 2001:db8:0:abcd::1 - 2001:0db8:abcd::0001 - 2001:db8::abcd:0:1 -2001:0db8:0000:abcd::1
2001:db8:0:abcd::1
What subnet mask is represented by the slash notation /20 - 255.255.224.0 - 255.255.240.0 - 255.255.255.0 - 255.255.255.192 - 255.255.255.248
255.255.240.0
Which subnet would be used if 5 host bits are available? - 255.255.255.240 - 255.255.255.0 - 255.255.255.128 - 255.255.255.224
255.255.255.224
Which subnet mask would be used if exactly 4 host bits are available? - 255.255.255.240 - 255.255.255.248 - 255.255.255.128 - 255.255.255.224
255.255.255.240
A network administrator is variably subnetting a network. The smallest subnet has a mask of 255.255.255.224. How many usable host addresses with this subnet provide? - 30 - 6 - 2 - 62 - 14
30
How many usable IP addresses are available on the 192.168.1.0/27 network? - 2256 - 254 - 62 - 32 - 30 - 16
30
Given a /32 Global Routing Prefix and a /64 prefix, how many bits would be allocated for the Subnet ID? - 8 - 16 - 32 - 48 - 64
32
A network administrator subnets the 192.168.10.0/24 network into subnets with /26 masks. How many equal-sized subnets are created? - 16 - 2 - 64 - 4 - 8 - 1
4
How many valid host addresses are available on an IPv4 subnet that is configured with a /26 mask. - 254 - 62 - 64 - 190 - 192
62
If a network device has a mask of /26, how many IP addresses are available for host on this network? - 16 - 14 - 32 - 62 - 64 - 30
62
What is the recommended prefix length for most IPv6 subnets - 32 - 48 - 64 - 128
64
What is the interface ID of the IPv6 address 2001:DB8::1000:A9CD:47FF:FE57:FE94/64 - 47FF:FE57:FE94 - A9CD:47FF:FE57:FE94/64 - 1000:A9CD:47FF:FE57:FE94 - FE57:FE94 - FE94
A9CD:47FF:FE57:FE94/64
Which address type is not supported in IPv6? - Multicast - Unicast - Broadcast - Private
Broadcast
What is the most important motivating factor for moving to IPv6? - Better performance with IPv6 - IPv6 addresses that are easier to work with - Better security with IPv6 - Depletion of IPv4 addresses
Depletion of IPv4 addresses
Which of the following techniques use native IPv6 connectivity? - Dual stack - Tunneling - Translation - All of the above
Dual Stack
What are the two methods a device can use to generate its own IPv6 interface ID? - SLAAC - Stateless DHCPv6 - Stateful DHCPv6 - EUI-64 - Randomly generated
EUI-64 and randomly generated
How does a networked server manage request from multiple clients for different services? - The sever sends all request through a default gateway - The sever uses IP addresses to identify different services. - Each request is tracked through the physical address of the client. - Each request has a combination of source and destination port numbers coming from a unique IP address.
Each request has a combination of source and destination port numbers coming from a unique IP address.
Which IPv6 network prefix is only intended for local links and can not be routed? - FC00::/7 - FF00::/12 - FE80::/10 - 2001::/3
FE80::/10
True or False: 4 out of 5 RIRs no longer have enough IPv4 addresses to allocate to customers on a regular basis
False
True or false? RA messages are sent to all IPv6 routers by host requesting addressing information
False
True or false? The subnet ID field in an GUA must borrow bits from the interface ID
False
How many exchanges are needed to end both sessions between two hosts? - One exchanges - Two exchanges - Three exchanges - Four exchanges - Five exchanges
Four exchanges
Which part of a GUA is assigned by the ISP? - Global routing prefix - Global routing prefix and subnet ID - Prefix - RIR prefix
Global routing prefix
What field content is used by ICMPv6 to determine that a packet has expired? - Time exceeded field - CRC field - Hop limit field - TTL field
Hop Limit field
What does the IP address 172.17.4.250/24 represent? - Network address - Host address - Broadcast address - Multicast address
Host address
Which protocol is used by IPv4 and IPv6 to provide error messaging? - NDP - ARP - ICMP - DHCP
ICMP
Which protocol provides feedback from the destination host to the source host about errors in packet delivery? - BOOTP - ICMP - DNS - ARP
ICMP
What is indicated by a successful ping to the ::1 IPv6 address? - The host is cabled properly - The default gateway address is correctly configured - IP is properly installed on the host - All host on the local link are available. - The link-local address is correctly configured
IP is properly installed on the host
Which TCP header statement is true? - It consists of 4 fields in an 8-byte header - It consists of 8 fields in a 10-byte header - It consists of 10 fields in a 20-byte header - It consists of 10 fields in a 40-byte header
It consists of 10 fields in a 10-byte header
Which UDP header statement is true? - It consists of 4 fields in an 8-byte header - It consists of 8 fields in a 10-byte header - It consists of 10 fields in a 20-byte header - It consists of 10 fields in a 40-byte header
It consists of 4 fields in a 8-byte header
What is the purpose of the command ping::1? - It test the multicast connectivity to all host on the subnet. - It test the reachability of the default gateway for the network - It test the internal configuration of an IPv6 host. - It test the broadcast capability of all host on the subnet
It test the internal configuration of an IPv6 host
What type of IPv6 address begins with fe80? - GUA - LLA - Multicast address - None. An IPv6 address must begin with 2001.
LLA
Which type of IPv6 unicast address is not routable between networks? - Unique local address - GUA - Embedded IPv4 address - LLA
LLA
At minimum, which address is required on IPv6-enabled interfaces? - Site local - Global unicast - Link-local - Unique local
Link-local
What type of address is automatically assigned to an interface when IPv6 is enabled on that interface? - Link-local - Unique local - Global unicast - Loopback
Link-local
Which type of IPv6 address is not routable and used only for communication on a single subnet? - Unspecified address - Global unicast address - Link-local address - Unique local address - Loopback address
Link-local address
Why is UDP desirable for protocols that make a simple request and reply transactions? - Flow control - Low overhead - Reliability - Same-order delivery
Low overhead
Which dynamic addressing method for GUAs is the one where devices rely solely on the contents for the RA message for their addressing information - Method 1: SLAAC - Method 2: SLAAC and stateless DHCPv6 - Method 3: Stateful DHCPv6
Method 1: SLAAC
Which dynamic addressing method for GUAs is the one where devices get their IPv6 configuration in a RA message and request DNS information from a DHCPv6 server? - Method 1: SLAAC - Method 2: SLAAC and stateless DHCPv6 - Method 3: Stateful DHCPv6
Method 2: SLAAC and stateless DHCPv6
Which dynamic addressing method for GUAs is the one where devices rely solely on a DHCPv6 server for their addressing information? - Method 1: SLAAC - Method 2: SLAAC and stateless DHCPv6 - Method 3: Stateful DHCPv6
Method 3: Stateful DHCPv6
What message is sent by a host to check the uniqueness of an IPv6 address before using that address? - Echo request - Router solicitation - Neighbor solicitation - ARP request
Neighbor Solicitation
Which two parts are components of an IPv4 address? (Choose Two) - Physical portion - Network portion - Logical portion - Host portion - Subnet portion - Broadcast portion
Network portion and host portion
Which utility uses the Internet Control Messaging Protocol? (ICMP) - Ping - DNS - NTP - RIP
Ping
Which devices will not forward an IPv4 broadcast packet by default? - Ethernet switch - Router - Windows PC - None of the above. All devices forward IPv4 broadcast packets by default.
Router
Which type of ICMPv6 message would a host send to acquire an IPv6 configuration when booting up? - Neighbor Advertisement (NA) message - Neighbor Solicitation (NS) message - Router Advertisement (RA) message - Router Solicitation (RS) message
Router Solicitation
Which control bit flags are used during the three-way handshake? - ACK and FIN - FIN and RESET - RESET and SYN - SYN and ACK
SYN and ACK
What field is used by the destination host to reassemble segments into the original order? - Control Bits - Destination Port - Sequence Number - Source Port - Window Size
Sequence Number
Which of the following would be valid source and destination ports for a host connecting to an email server? - Source: 25, Destination: 49152 - Source: 80, Destination: 49152 - Source: 49152, Destination: 25 - Source: 49152, Destination: 80
Source: 49152, Destination: 25
Which of the following would be valid source and destination ports for a host? - Source: 53, Destination: 49152 - Source: 1812, Destination 49152 - Source: 48152, Destination: 53 - Source: 49152, Destination: 1812
Source: 49152, Destination: 53
Which field in an IPv6 GUA is used for subnetting - Prefix - Network - Global Routing Prefix - Subnet ID - Interface ID
Subnet ID
Which transport layer protocol ensures reliable same-order delivery? - ICMP - IP - TCP - UDP
TCP
Which transport layer feature is used to establish a connection-oriented session? - TCP port number - TCP 3-way handshake - UPD sequence number - UDP ACK flag
TCP 3-way handshake
Which two applications would use the UDP transport layer protocol? (Choose two) - FTP - HTTP - ICMP - TFTP - VoIP
TFTP VoIP
A user calls to report that a PC cannot access the internet. The network technician ask the user to issue the ping command ping 127.0.0.1 in a command prompt window. The user reports that the result is four positive replies. What conclusion can be drawn based on this connectivity test? - The PC can access the network. The problem exists beyond the local network. - The TCP/IP implementation is functional - The IP address obtained from the DHCP server is correct. - The PC can access the internet. However, the web browser may not work.
The TCP/IP implementation is functional
What is a socket? - The combination of the source and destination sequence and acknowledgment numbers. - The combination of the source and destination sequence numbers and port numbers - The combination of the source and destination IP address and source and destination Ethernet address - The combination of a source IP address and port number or a destination IP address and port number
The combination of a source IP address and port number or a destination IP address and port number
What happens when a sending host senses there is congestion? - The receiving host increases the number of bytes it sends before receiving an acknowledgment from the sending host. - The receiving host reduces the number of bytes it sends before receiving an acknowledgment from the sending host. - The sending host increases the number of bytes it sends before receiving an acknowledgment from the destination host. - The sending host reduces the number of bytes it sends before receiving an acknowledgement from the destination host.
The sending host reduces the number of bytes it sends before receiving an acknowledgment from the destination host
What statement is true about variable-length subnet masking? - Each subnet is the same size. - The size of each subnet may be different, depending on requirements. - Subnets may only be subnetted one additional time. - Bits are returned, rather than borrowed, to create additional subnets.
The size of each subnet may be different, depending on the requirements.
What is a function of the tracert command that differs from the ping command when they are used on a workstation? - The tracert command reaches the destination faster - The tracert command shows the information of routers in the path - The tracert command sends one ICMP message to each hop in the path. - The tracert command is used to test the connectivity between two devices
The tracert command shows the information of routers in the path
Which ICMP message is used by the tracerroute utility during the process of finding the path between two end host? - Time exceeded - Destination unreachable - Redirect - Ping
Time exceeded
What is the purpose of the subnet mask in conjunction with an IP address? - To determine the subnet to which the host belongs - To identify whether the address is a public or private - To uniquely identify a host on a network - To mask the IP address to outsiders
To determine the subnet to which the host belongs.
Why does a Layer 3 device perform the ANDing process on a destination IP address and subnet mask? - To identify faulty frames - To identify the network address of the destination network - To identify the host address of the destination host - To identify the broadcast address of the destination network
To identify the network address of the destination network.
A user who is unable to connect to the file server contacts the help desk. The helpdesk technician ask the user to ping the IP address of the default gateway that is configured on the workstation. What is the purpose of the ping command? - To test that the host has the capability to reach host on other networks - To request that gateway forward the connection request to the file server - To resolve the domain name of the file server to its IP address - To obtain a dynamic IP address from the server
To test that the host has the capability to reach host on other networks
Which layer is responsible for establishing a temporary communication session between the source and destination host applications? - Application layer - Data link layer - Network layer - Physical layer - Transport layer
Transport Layer
True or false? IPv6 was designed with subnetting in mind.
True
Which of the following is a stateless best-effort delivery transport layer protocol? - ICMP - IP - TCP - UPD
UDP
Which transport layer protocol statement is true? - TCP has fewer fields than UDP/ - TCP is faster than UDP - UDP is a best-effort delivery protocol - UDP provides reliability
UDP is a best-effort delivery protocol
Which UDP datagram reassembly statement is true? - UDP does not reassemble the data. - UDP reassembles the data in the order that it was received - UDP reassembles the data using control bits - UDP reassembles the data using sequence numbers
UDP is reassembled in the order it was received
Which transport layer protocol would be used for VoIP applications? - Session Information Protocol (SIP) - Transmission Control Protocol (TCP) - User Datagram Protocol (UDP) - VoIP Transfer Protocol
User Datagram Protocol (UDP)
Which port group includes port numbers for FTP, HTTP, and TFTP applications? - Dynamic ports - Private ports - Registered ports - Well-known ports
Well-known ports
What field is used to provide flow control? - Control Bits - Destination Bits - Sequence Number - Source Port - Window Size
Window Size
Which Windows command would display the protocols in use, the local address and port numbers, the foreign address and port numbers, and the connection state? - ipconfig / all - ping - netstat - traceroute
netstat
Which command can be used to test connectivity between two devices using echo requests and echo reply messages? - ping - ipconfig - ICMP - nestat
ping
A network administrator can successfully ping the server at www.cisco.com, but cannot ping the company web server located at an ISP in another city. Which tool or command would help identify the specific router where the packet was lost or delayed? - telnet - ipconfig - netstat - traceroute
traceroute
A technician is troubleshooting a network where it is suspected that a defective node in the network path is causing packets to be dropped. The technician only has the IP address of the end point device and does not have any details of the intermediate devices. What command can the technician use to identify the faulty node? - tracert - ipconfig/flushdns - ipconfig/displaydns - ping
tracert
