Network CH4

1500 bytes

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

Bandwidth and delay

By default, which of the following components of the composite metric are considered for Enhanced Interior Gateway Routing Protocol (EIGRP) ?

Each router has complete knowledge of the network topology (Open Shortest Path First (OSPF) is a non-proprietary link-state routing protocol. Being a link-state routing protocol, each OSPF enabled router maintains a complete topology of the OSPF area in which it belongs.)

Which of the following is true about the OSPF routing protocol?

True

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

False

The pathping utility sends 10 pings per hop by default.

Netstat -an

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

Default route ( gateway of last resort, is the route to which packets are sent whose destination IP addresses does not match with any destinations in the routing table.)

A router receives a packet with a destination address that is not found within its routing table. The router is configured to send all such packets to a specific next hop address. What is this next hop address called?

AD

A routing protocol's reliability and priority are rated by what measurement?

Network Layer

At which OSI layer does IP operate?

True

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

False

IPv4 and IPv6 use the same packet format.

By implementing a limit on the number of hops allowed in a path (Routing Information Protocol (RIP) is a dynamic routing protocol that uses a hop count as a metric and uses it to prevent routing loops. The maximum number of hops allowed by RIP is 15.)

If you have a small Routing Information Protocol (RIP) network of 10 hops, how will RIP prevent routing loops?

Sliding - window

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

True

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

NAT & gateway redundancy protocols (A virtual IP is an IP address that doesn't correspond directly to a physical or logical network interface. One example is when implementing NAT, incoming data packets are destined to a virtual IP address that doesn't correspond to any physical interface, which is then translated and routed to the IP address of the internal device to which it corresponds. A second example is when implementing gateway redundancy protocols.)

In which of the following applications can a virtual IP address be used?

High availability ( there is back and forth at all levels of the architecture)

Refer to the exhibit. Which of the following configuration is being displayed to increase the network uptime?

False

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

Link-state protocols

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?

Checksum

What field in a TCP segment is used to determine if an arriving data unit exactly matches the data unit sent by the source?

Differential services (DiffServ)

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

1500 bytes

What is the Internet standard MTU?

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

What is the purpose of the checksum TCP field?

Static route

What kind of route is created when a network administrator configures a router to use a specific path between nodes?

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

What occurs when a collision happens on a network?

Latency

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

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

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

Gateway of Last Resort

When a router can't determine a path to a message's destination, where does it send the message?

Network Layer (3)

Which OSI layer is responsible for directing data from one LAN to another?

1 & 3 are true

Which of the following statements is true about Fault tolerance?1) It is a direct result of the design of the network itself.2) It is the name of the feature that allows for dual layer 2 connections between switches.3) Enables a network to continue functioning normally in case of a partial failure.

TCP

Which protocol's header would a Layer 4 device read and process?

BGP

Which routing protocol does an exterior router use to collect data to build its routing tables?

EIGRP

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?

BGP utilizes TCP for communicating updates

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

Traceroute -l srv1.mycompany.com

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

ICMP & ARP

Which two protocols manage neighbor discovery processes on IPv4 networks?

Load Balancer ( This device implements algorithms that will balance the sessions initiated by the internal network over all the available WAN connections to evenly and efficiently distribute the network traffic.)

You are asked to install a device that will combine several connections to the Internet and provide the sum of the available network speeds to an internal network while equally sharing the data traffic among all the Internet connections. Which of the following devices are you asked to install?

Show ip route

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

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

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

It will continue to route traffic on the same path.

You manage a small stub network that has a router configured with static routing. If the connection to the next hop goes down, what action will the router perform?

3.65

You need to implement high availability in your network. One implementation company ensures that their implementation will provide 99% of availability in a period of one year. With the mentioned availability, what would be the total downtime in a year?