Midterm NetTechPro PT2

Encrypted control of remote computers using the RDP protocol is accomplished using what port number?

TCP 3389

With a FQDN of ftp1.dallas.mycompany.com, what part is the domain name?

mycompany.com

What utility is used to verify that TCP/IP installed, bound to the NIC, configured correctly, and communicating with the network?

ping

You are connected to your network's Cisco router, and need to verify the route table. What command should you enter?

show ip route

In a TCP segment, what field indicates how many bytes the sender can issue to a receiver before acknowledgment is received?

sliding-window

What tcpdump command can be used to filter out all traffic except SSH traffic?

tcpdump port 22

Which of the following is NOT a range of IP addresses recommended for use in private networks?

127.0.0.0 through 127.255.255.255

Which of the following IP addresses would be a loopback IP address?

127.0.0.1

In the classful addressing scheme, what range of network addresses is considered a Class B?

128.0.x.y to 191.255.x.y

By default, what is the MTU size on a typical Ethernet network?

1500 bytes

The IP connectionless protocol relies on what other protocol to guarantee delivery of data?

TCP

You are setting up a DNS zone and have been asked to create SPF and DKIM records. What type of DNS record will hold this information?

TXT record

You have been tasked with maintaining a network that is jumbo frame enabled. What does this mean?

The MTU for the network can be as high as 9198 bytes.

You are troubleshooting a network issue on a client computer and discover that the network card has an IP address of 169.254.196.200. What does this mean?

The computer is configured to use DHCP, but was unable to lease an address.

How can you determine the manufacturer of a NIC card based on the MAC address?

The first 24 bits, known as the Organizationally Unique Identifier, identify the manufacturer.

In the event of a duplicate MAC address shared by two hosts on a switched network, what statement is accurate?

The hosts will still send and receive traffic, but traffic may not always reach the correct destination.

What part of a MAC address serves as the extension identifier, or device ID?

The last 24 bits of the MAC address.

What happens when a router receives a packet with a TTL of 0?

The router drops the packet and sends an ICMP TTL expired message back to the host.

How do routers create a broadcast domain boundary?

They do not forward broadcast traffic.

A hexadecimal number is a number written in the base 16 number system.

True

At the root level of the DNS hierarchical structure, 13 clusters of root servers hold information used to locate TLD servers.

True

Each organization that provides host services on the public Internet is responsible for providing and maintaining DNS authoritative servers for public access.

True

IP is an unreliable, connectionless protocol, as it does not establish a session to send its packets.

True

In general, a Layer 3 or Layer 4 switch is still optimized for fast Layer 2 data handling.

True

The Border Gateway Protocol is considered to be a hybrid routing protocol.

True

The cost of upgrading infrastructure has been a major factor in the slow adoption of IPv6.

True

UDP port 123 is utilized by the Network Time Protocol service.

True

When using IPv6, two or more nodes on the same link are said to be neighbors.

True

What command will list only current connections, including IP addresses and port numbers?

netstat -n

Which command will produce statistics about each message transmitted by a host, separated according to protocol type?

netstat -s

When using DHCP for IPv6 (i.e. DHCPv6), what port do clients receive responses on?

port 547

At the Transport layer of the OSI, what is used to find and communicate with a particular application running on a host?

port numbers

Which traceroute command will perform a trace using ICMP echo requests instead of UDP datagrams to the host srv1.mycompany.com?

traceroute -I srv1.mycompany.com

What text editor can be used on Linux to view and edit the contents of a configuration file?

vim

What command can be used to check a domain computer's time source from a Command Prompt window?

w32tm /query /source

Which routing protocol started as a Cisco proprietary protocol and combines some of the features of a link-state protocol with that of distance-vector protocols?

EIGRP

You have been tasked with the replacement of OSPF with EIGRP throughout your organization, which consists of a mixture of Cisco routers and routers from other vendors. What statement is accurate?

EIGRP may not be available on non-Cisco routers.

If a host's IPv6 address contains the network adapter's MAC address within the last 64 bits of the IPv6 address, what standard is being used?

EUI-64

What occurs when a collision happens on a network?

Each node on the network waits a random amount of time and then resends the transmission.

An IPv6 address consists of 128 bits that are written as 10 blocks of hexadecimal numbers separated by colons.

False

DNS follows a centralized database model, allowing for easier management of DNS records.

False

ICANN is responsible for restrictions on use of the .com, .org, and .net TLDs.

False

IPv4 and IPv6 use the same packet format.

False

Routing Information Protocol (RIP) is an interior gateway protocol that uses a link-state algorithm.

False

The 1024 - 65535 range of ports is also known as the "well-known" range.

False

The CTRL + S key combination can be used to stop an actively running command.

False

The FTP protocol utilizes UDP, while TFTP uses TCP for data transmission.

False

The pathping utility sends 10 pings per hop by default.

False

UDP provides error checking, but not sequencing.

False

What is NOT one of the three characteristics of TCP in its role as a reliable delivery protocol?

Framing

Which statement does NOT accurately describe characteristics of the OSPF protocol?

OSPF requires very little CPU or memory resources.

In the DNS hierarchy, where is information about how to find the top-level domain servers held?

On the DNS root servers.

Which of the following protocols is used as a signaling protocol for the initial connection between hosts, but does not participate in data transfer during the session?

SIP

Which of the following is not a task handled by a router?

A router forwards broadcasts over the network.

In a DNS zone, what type of record holds the name-to-address mapping for IPv6 addresses?

AAAA record

Originally codified by ISO, what does the "intermediate system" in IS-IS (Intermediate System to Intermediate System) stand for?

An IS-IS capable network router.

Which statement regarding the Border Gateway Protocol (BGP) is accurate?

BGP utilizes TCP for communicating updates.

What is by far the most popular DNS server software available?

BIND

Your supervisor has asked you to configure a new prototype network with a dual stack configuration. What does this mean?

Both IPv4 and IPv6 protocols will be used on the network.

What statement regarding the differences between the Windows tracert utility and the Linux/UNIX/macOS traceroute utility is accurate?

By default, the tracert utility uses ICMP echo requests, while traceroute uses UDP datagrams or TCP SYN messages.

What field in an IPv4 packet informs routers the level of precedence they should apply when processing an incoming packet?

Differentiated Services (DiffServ)

What is the purpose of the checksum TCP field?

It allows the receiving node to determine whether the TCP segment became corrupted during transmission.

What does the MX record do in a forward DNS zone?

It identifies the e-mail server to be used for e-mail traffic for the domain.

What is routing protocol convergence time defined as?

It is the time it takes for the protocol to recognize the best path in the event of a network change.

What statement regarding the Server Message Block protocol is accurate?

It is used by Windows and UNIX-based operating systems to share files.

What is the ARPA domain suffix utilized for?

It is used for reserve DNS queries, and holds PTR records

What utility is the equivalent to the pathping command on a Linux system?

mtr

You are troubleshooting a DNS issue on a Linux system, and need to test the resolution of your domain mycompany.com MX record using Google's DNS server with the IP address of 8.8.8.8. What dig command will accomplish this?

dig @8.8.8.8 mycompany.com MX

In IPv6, what field is used to indicate what sequence of packets from one source to one or multiple destinations a packet belongs to?

flow label

What IPv6 field is similar to the TTL field in IPv4 packets?

hop limit

On a Linux-based system, what command can be used to display TCP/IP information associated with every interface on the system?

ifconfig -a

What command can you utilize to display TCP/IP configuration information for each network adapter installed?

ipconfig /all

A Windows computer on your network is having issues resolving queries for a specific domain, but not other domains. Other computers on the same network resolve the name just fine. What command can you issue that might fix the problem?

ipconfig /flushdns

What routing metric affects a path's potential performance due to delay?

latency

What type of IPv6 address is fe80::8cf1:2c42:ffde:da1c?

link local address

Routing protocols that enable routers to communicate beyond neighboring routers, allowing each router to independently map the network, are known as which type of protocols?

link-state protocols

When using the Routing Information Protocol (RIP), what is the maximum number of hops a message can take between its source and its destination before the destination is considered unreachable?

15

If the VLAN tag is present in an Ethernet frame, what is the maximum frame size?

1522 bytes

Which of the following IPv6 addresses represents a global unicast address?

2000::/3

TCP uses a four-step process called a four-way handshake to establish a TCP connection.

False